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Neural tube prosencephalon Stock Photos and Images
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Neural tube prosencephalon Stock Photos and Images
Embryonic nervous system, illustration Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/embryonic-nervous-system-illustration-image561717982.htmlRF2RHTD0E–Embryonic nervous system, illustration
The anatomy of the nervous system, from the standpoint of development and function . stage in the development of any vertebrateembryo the rostral portion of the neural tube is distinguished from the caudalpart by the more rapid development of the former, its walls bulging outwardto form three bulb-like swellings or vesicles, which together represent the brain,and are named from before backward, the prosencephalon, mesencephalon, and 24 THE NEURAL IM;i WD Us DERIVATIVES 25 rhombencephalon (Fig. 7). The more rostral vesicle becomes subdivided by .1oonstriction into the telencephalon and dienceph Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-anatomy-of-the-nervous-system-from-the-standpoint-of-development-and-function-stage-in-the-development-of-any-vertebrateembryo-the-rostral-portion-of-the-neural-tube-is-distinguished-from-the-caudalpart-by-the-more-rapid-development-of-the-former-its-walls-bulging-outwardto-form-three-bulb-like-swellings-or-vesicles-which-together-represent-the-brainand-are-named-from-before-backward-the-prosencephalon-mesencephalon-and-24-the-neural-imi-wd-us-derivatives-25-rhombencephalon-fig-7-the-more-rostral-vesicle-becomes-subdivided-by-1oonstriction-into-the-telencephalon-and-dienceph-image342775753.htmlRM2AWJNY5–The anatomy of the nervous system, from the standpoint of development and function . stage in the development of any vertebrateembryo the rostral portion of the neural tube is distinguished from the caudalpart by the more rapid development of the former, its walls bulging outwardto form three bulb-like swellings or vesicles, which together represent the brain,and are named from before backward, the prosencephalon, mesencephalon, and 24 THE NEURAL IM;i WD Us DERIVATIVES 25 rhombencephalon (Fig. 7). The more rostral vesicle becomes subdivided by .1oonstriction into the telencephalon and dienceph
![Human anatomy, including structure and development and practical considerations . ^. 911;; altera shorttime when viewed from l)ehitul it presents an elongated lozen^^e-shaped form and,hence, is also calKtl the rhombencephalon. ihe middle vesicle, the mid-brain^or mesencephalon, is cons]ncuous on account of its rounded form and pnnninentposition, lying, as it does, over the marked primary flexure which the head-end ofthe neural tube very early exhibits. The anterior vesicle, known as the fore-brain, or prosencephalon, at lirst issmall and rounded, but soon becomes modified by the appearance, on Stock Photo](https://c8.alamy.com/comp/2AWFNFG/human-anatomy-including-structure-and-development-and-practical-considerations-911-altera-shorttime-when-viewed-from-lehitul-it-presents-an-elongated-lozene-shaped-form-andhence-is-also-calktl-the-rhombencephalon-ihe-middle-vesicle-the-mid-brainor-mesencephalon-is-cons-ncuous-on-account-of-its-rounded-form-and-pnnninentposition-lying-as-it-does-over-the-marked-primary-flexure-which-the-head-end-ofthe-neural-tube-very-early-exhibits-the-anterior-vesicle-known-as-the-fore-brain-or-prosencephalon-at-lirst-issmall-and-rounded-but-soon-becomes-modified-by-the-appearance-on-2AWFNFG.jpg "Human anatomy, including structure and development and practical considerations . ^. 911;; altera shorttime when viewed from l)ehitul it presents an elongated lozen^^e-shaped form and,hence, is also calKtl the rhombencephalon. ihe middle vesicle, the mid-brain^or mesencephalon, is cons]ncuous on account of its rounded form and pnnninentposition, lying, as it does, over the marked primary flexure which the head-end ofthe neural tube very early exhibits. The anterior vesicle, known as the fore-brain, or prosencephalon, at lirst issmall and rounded, but soon becomes modified by the appearance, on Stock Photo")
Human anatomy, including structure and development and practical considerations . ^. 911;; altera shorttime when viewed from l)ehitul it presents an elongated lozen^^e-shaped form and,hence, is also calKtl the rhombencephalon. ihe middle vesicle, the mid-brain^or mesencephalon, is cons]ncuous on account of its rounded form and pnnninentposition, lying, as it does, over the marked primary flexure which the head-end ofthe neural tube very early exhibits. The anterior vesicle, known as the fore-brain, or prosencephalon, at lirst issmall and rounded, but soon becomes modified by the appearance, on Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/human-anatomy-including-structure-and-development-and-practical-considerations-911-altera-shorttime-when-viewed-from-lehitul-it-presents-an-elongated-lozene-shaped-form-andhence-is-also-calktl-the-rhombencephalon-ihe-middle-vesicle-the-mid-brainor-mesencephalon-is-cons-ncuous-on-account-of-its-rounded-form-and-pnnninentposition-lying-as-it-does-over-the-marked-primary-flexure-which-the-head-end-ofthe-neural-tube-very-early-exhibits-the-anterior-vesicle-known-as-the-fore-brain-or-prosencephalon-at-lirst-issmall-and-rounded-but-soon-becomes-modified-by-the-appearance-on-image342709572.htmlRM2AWFNFG–Human anatomy, including structure and development and practical considerations . ^. 911;; altera shorttime when viewed from l)ehitul it presents an elongated lozen^^e-shaped form and,hence, is also calKtl the rhombencephalon. ihe middle vesicle, the mid-brain^or mesencephalon, is cons]ncuous on account of its rounded form and pnnninentposition, lying, as it does, over the marked primary flexure which the head-end ofthe neural tube very early exhibits. The anterior vesicle, known as the fore-brain, or prosencephalon, at lirst issmall and rounded, but soon becomes modified by the appearance, on
The anatomy of the nervous system, from the standpoint of development and function . Prosencephalon Stomodccum Amnion (cut) Yolk sac Bodv stalk Fig. 14.—Human embryo of 2.4 mm. showing the neural tube partially closed. (Kollmann.) diagrams E, F, G of Fig. 7. The lateral wall of the telencephalon, with thecorpus striatum and olfactory brain or rliinenccphalon, has been evaginated oneither side to form paired structures, the cerebral hemispheres (Fig. 16). Ex-cept for the corpus striatum and rhinencephalon the evaginated wall is relativelythin, develops into the cerebral cortex, and is known as Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-anatomy-of-the-nervous-system-from-the-standpoint-of-development-and-function-prosencephalon-stomodccum-amnion-cut-yolk-sac-bodv-stalk-fig-14human-embryo-of-24-mm-showing-the-neural-tube-partially-closed-kollmann-diagrams-e-f-g-of-fig-7-the-lateral-wall-of-the-telencephalon-with-thecorpus-striatum-and-olfactory-brain-or-rliinenccphalon-has-been-evaginated-oneither-side-to-form-paired-structures-the-cerebral-hemispheres-fig-16-ex-cept-for-the-corpus-striatum-and-rhinencephalon-the-evaginated-wall-is-relativelythin-develops-into-the-cerebral-cortex-and-is-known-as-image342768908.htmlRM2AWJD6M–The anatomy of the nervous system, from the standpoint of development and function . Prosencephalon Stomodccum Amnion (cut) Yolk sac Bodv stalk Fig. 14.—Human embryo of 2.4 mm. showing the neural tube partially closed. (Kollmann.) diagrams E, F, G of Fig. 7. The lateral wall of the telencephalon, with thecorpus striatum and olfactory brain or rliinenccphalon, has been evaginated oneither side to form paired structures, the cerebral hemispheres (Fig. 16). Ex-cept for the corpus striatum and rhinencephalon the evaginated wall is relativelythin, develops into the cerebral cortex, and is known as
. A laboratory manual and text-book of embryology. Embryology. THE BRAIN 325 The obliquely coursing spinal nerves with the filum terminale constitute the cauda equina. THE BRAIN We have seen that in embryos of 2 to 2.5 mm. the neural tube is nearly straight, but that its cranial end is enlarged to form the anlage of the brain. The appearance of two constrictions in the wall of the anlage subdivides it into the three primary brain vesicles, the fore-brain or prosencephalon, mid-brain or mesencephalon, and hind-brain or rhombencephalon (Fig. 306). .Anterior neuropore iPallium of telencephalon. P Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/a-laboratory-manual-and-text-book-of-embryology-embryology-the-brain-325-the-obliquely-coursing-spinal-nerves-with-the-filum-terminale-constitute-the-cauda-equina-the-brain-we-have-seen-that-in-embryos-of-2-to-25-mm-the-neural-tube-is-nearly-straight-but-that-its-cranial-end-is-enlarged-to-form-the-anlage-of-the-brain-the-appearance-of-two-constrictions-in-the-wall-of-the-anlage-subdivides-it-into-the-three-primary-brain-vesicles-the-fore-brain-or-prosencephalon-mid-brain-or-mesencephalon-and-hind-brain-or-rhombencephalon-fig-306-anterior-neuropore-ipallium-of-telencephalon-p-image232344372.htmlRMRE05H8–. A laboratory manual and text-book of embryology. Embryology. THE BRAIN 325 The obliquely coursing spinal nerves with the filum terminale constitute the cauda equina. THE BRAIN We have seen that in embryos of 2 to 2.5 mm. the neural tube is nearly straight, but that its cranial end is enlarged to form the anlage of the brain. The appearance of two constrictions in the wall of the anlage subdivides it into the three primary brain vesicles, the fore-brain or prosencephalon, mid-brain or mesencephalon, and hind-brain or rhombencephalon (Fig. 306). .Anterior neuropore iPallium of telencephalon. P
. A laboratory manual and text-book of embryology. Embryology. 330 THE MORPHOGENESIS OF THE CENTRAL NERVOUS SYSTEM THE DERIVATIVES OF THE NEURAL TUBE Primary Vesicles Subdivisions Derivatives Cavities Telencephalon Cerebral cortex Corpora striata Rhinencephalon Lateral ventricles Cranial portion of third ventricles Prosencephalon Diencephalon Epithalamus (pineal body) Thalamus Optic tract Hypothalamus hypophysis tuber cinereum mammillare bodies Third ventricle Mesencephalon Mesencephalon Corpora quadrigemina Tegmentum Crura cerebri Aquaeductus cerebri Rhombencephalon Metencephalon Cerebellum P Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/a-laboratory-manual-and-text-book-of-embryology-embryology-330-the-morphogenesis-of-the-central-nervous-system-the-derivatives-of-the-neural-tube-primary-vesicles-subdivisions-derivatives-cavities-telencephalon-cerebral-cortex-corpora-striata-rhinencephalon-lateral-ventricles-cranial-portion-of-third-ventricles-prosencephalon-diencephalon-epithalamus-pineal-body-thalamus-optic-tract-hypothalamus-hypophysis-tuber-cinereum-mammillare-bodies-third-ventricle-mesencephalon-mesencephalon-corpora-quadrigemina-tegmentum-crura-cerebri-aquaeductus-cerebri-rhombencephalon-metencephalon-cerebellum-p-image232344214.htmlRMRE05BJ–. A laboratory manual and text-book of embryology. Embryology. 330 THE MORPHOGENESIS OF THE CENTRAL NERVOUS SYSTEM THE DERIVATIVES OF THE NEURAL TUBE Primary Vesicles Subdivisions Derivatives Cavities Telencephalon Cerebral cortex Corpora striata Rhinencephalon Lateral ventricles Cranial portion of third ventricles Prosencephalon Diencephalon Epithalamus (pineal body) Thalamus Optic tract Hypothalamus hypophysis tuber cinereum mammillare bodies Third ventricle Mesencephalon Mesencephalon Corpora quadrigemina Tegmentum Crura cerebri Aquaeductus cerebri Rhombencephalon Metencephalon Cerebellum P
. Comparative embryology of the vertebrates; with 2057 drawings and photos. grouped as 380 illus. Vertebrates -- Embryology; Comparative embryology. 468 DEVELOPMENT OF PRIMITIVE BODY FORM RHOMBENCEPHALON MESENCEPHALON PROSENCEPHALON NEURAL TUBE NOTOCHORD MESENCHYME AREA. ORAL EVAGINATION ORAL SUCKER NEURAL TUBE HEAD GUT SUBNOTOCHOROAL ROD VENTRAL MESODERM NOTOCHORD. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Nelsen, Ol Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/comparative-embryology-of-the-vertebrates-with-2057-drawings-and-photos-grouped-as-380-illus-vertebrates-embryology-comparative-embryology-468-development-of-primitive-body-form-rhombencephalon-mesencephalon-prosencephalon-neural-tube-notochord-mesenchyme-area-oral-evagination-oral-sucker-neural-tube-head-gut-subnotochoroal-rod-ventral-mesoderm-notochord-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-nelsen-ol-image232675507.htmlRMREF7YF–. Comparative embryology of the vertebrates; with 2057 drawings and photos. grouped as 380 illus. Vertebrates -- Embryology; Comparative embryology. 468 DEVELOPMENT OF PRIMITIVE BODY FORM RHOMBENCEPHALON MESENCEPHALON PROSENCEPHALON NEURAL TUBE NOTOCHORD MESENCHYME AREA. ORAL EVAGINATION ORAL SUCKER NEURAL TUBE HEAD GUT SUBNOTOCHOROAL ROD VENTRAL MESODERM NOTOCHORD. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Nelsen, Ol
. A laboratory manual and text-book of embryology. Embryology. CHAPTER XI THE MORPHOGENESIS OF THE CENTRAL NERVOUS SYSTEM In discussing the histogenesis of the nervous tissue we have described the early development of the neural tube, as an infolding of the neural plate and a closure of the neural groove (Fig. 297). The groove begins to close along the mid- dorsal line near the middle of the body in embryos of 2 mm. and the closure Mesencephalon Rhombencephalon Myelencephalon Amnion (cut) Mesodermal segment 14 Neural tube (not closed). Prosencephalon Stomodceum Amnion (cut) Yolk-sac Body-stalk Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/a-laboratory-manual-and-text-book-of-embryology-embryology-chapter-xi-the-morphogenesis-of-the-central-nervous-system-in-discussing-the-histogenesis-of-the-nervous-tissue-we-have-described-the-early-development-of-the-neural-tube-as-an-infolding-of-the-neural-plate-and-a-closure-of-the-neural-groove-fig-297-the-groove-begins-to-close-along-the-mid-dorsal-line-near-the-middle-of-the-body-in-embryos-of-2-mm-and-the-closure-mesencephalon-rhombencephalon-myelencephalon-amnion-cut-mesodermal-segment-14-neural-tube-not-closed-prosencephalon-stomodceum-amnion-cut-yolk-sac-body-stalk-image232344405.htmlRMRE05JD–. A laboratory manual and text-book of embryology. Embryology. CHAPTER XI THE MORPHOGENESIS OF THE CENTRAL NERVOUS SYSTEM In discussing the histogenesis of the nervous tissue we have described the early development of the neural tube, as an infolding of the neural plate and a closure of the neural groove (Fig. 297). The groove begins to close along the mid- dorsal line near the middle of the body in embryos of 2 mm. and the closure Mesencephalon Rhombencephalon Myelencephalon Amnion (cut) Mesodermal segment 14 Neural tube (not closed). Prosencephalon Stomodceum Amnion (cut) Yolk-sac Body-stalk
![. Comparative anatomy. Anatomy, Comparative. THE NERVOUS SYSTEM 543 Mesencephalon Shombencephalon Myelencephalon Amnion (cut) Mesodermal segment 14 Open neural groove. Prosencephalon Stomodaum Amnion {cut) Yolk sac Body stalk Fig. 448.—Human embryo of 2.4 mm. showing the neural tube partially closed. (From Ranson's "The Anatomy of the Nervous System," after KoUmann; courtesy of W. B. Saunders Company.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not p Stock Photo](https://c8.alamy.com/comp/REF7EE/comparative-anatomy-anatomy-comparative-the-nervous-system-543-mesencephalon-shombencephalon-myelencephalon-amnion-cut-mesodermal-segment-14-open-neural-groove-prosencephalon-stomodaum-amnion-cut-yolk-sac-body-stalk-fig-448human-embryo-of-24-mm-showing-the-neural-tube-partially-closed-from-ransons-quotthe-anatomy-of-the-nervous-systemquot-after-koumann-courtesy-of-w-b-saunders-company-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-p-REF7EE.jpg ". Comparative anatomy. Anatomy, Comparative. THE NERVOUS SYSTEM 543 Mesencephalon Shombencephalon Myelencephalon Amnion (cut) Mesodermal segment 14 Open neural groove. Prosencephalon Stomodaum Amnion {cut) Yolk sac Body stalk Fig. 448.—Human embryo of 2.4 mm. showing the neural tube partially closed. (From Ranson's "The Anatomy of the Nervous System," after KoUmann; courtesy of W. B. Saunders Company.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not p Stock Photo")
. Comparative anatomy. Anatomy, Comparative. THE NERVOUS SYSTEM 543 Mesencephalon Shombencephalon Myelencephalon Amnion (cut) Mesodermal segment 14 Open neural groove. Prosencephalon Stomodaum Amnion {cut) Yolk sac Body stalk Fig. 448.—Human embryo of 2.4 mm. showing the neural tube partially closed. (From Ranson's "The Anatomy of the Nervous System," after KoUmann; courtesy of W. B. Saunders Company.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not p Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/comparative-anatomy-anatomy-comparative-the-nervous-system-543-mesencephalon-shombencephalon-myelencephalon-amnion-cut-mesodermal-segment-14-open-neural-groove-prosencephalon-stomodaum-amnion-cut-yolk-sac-body-stalk-fig-448human-embryo-of-24-mm-showing-the-neural-tube-partially-closed-from-ransons-quotthe-anatomy-of-the-nervous-systemquot-after-koumann-courtesy-of-w-b-saunders-company-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-p-image232675142.htmlRMREF7EE–. Comparative anatomy. Anatomy, Comparative. THE NERVOUS SYSTEM 543 Mesencephalon Shombencephalon Myelencephalon Amnion (cut) Mesodermal segment 14 Open neural groove. Prosencephalon Stomodaum Amnion {cut) Yolk sac Body stalk Fig. 448.—Human embryo of 2.4 mm. showing the neural tube partially closed. (From Ranson's "The Anatomy of the Nervous System," after KoUmann; courtesy of W. B. Saunders Company.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not p
![. Comparative anatomy. Anatomy, Comparative. Prosencephalon Stomodaum Amnion {cut) Yolk sac Body stalk Fig. 448.—Human embryo of 2.4 mm. showing the neural tube partially closed. (From Ranson's "The Anatomy of the Nervous System," after KoUmann; courtesy of W. B. Saunders Company.). CEPHALIC FLEXURE OlENCEPHALON TELENCEPHALON I.FOREBRAIN OPTIC VESICLE ^ jf, OLFACTORY LOBE-^*^ II.MIDBRAIN INFUNDIBULUM MAMMILLARYBODY OTIC CAPSULE III.HINDBRAIN CEREBELLUM. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - colora Stock Photo](https://c8.alamy.com/comp/REF7E7/comparative-anatomy-anatomy-comparative-prosencephalon-stomodaum-amnion-cut-yolk-sac-body-stalk-fig-448human-embryo-of-24-mm-showing-the-neural-tube-partially-closed-from-ransons-quotthe-anatomy-of-the-nervous-systemquot-after-koumann-courtesy-of-w-b-saunders-company-cephalic-flexure-olencephalon-telencephalon-iforebrain-optic-vesicle-jf-olfactory-lobe-iimidbrain-infundibulum-mammillarybody-otic-capsule-iiihindbrain-cerebellum-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-colora-REF7E7.jpg ". Comparative anatomy. Anatomy, Comparative. Prosencephalon Stomodaum Amnion {cut) Yolk sac Body stalk Fig. 448.—Human embryo of 2.4 mm. showing the neural tube partially closed. (From Ranson's "The Anatomy of the Nervous System," after KoUmann; courtesy of W. B. Saunders Company.). CEPHALIC FLEXURE OlENCEPHALON TELENCEPHALON I.FOREBRAIN OPTIC VESICLE ^ jf, OLFACTORY LOBE-^*^ II.MIDBRAIN INFUNDIBULUM MAMMILLARYBODY OTIC CAPSULE III.HINDBRAIN CEREBELLUM. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - colora Stock Photo")
. Comparative anatomy. Anatomy, Comparative. Prosencephalon Stomodaum Amnion {cut) Yolk sac Body stalk Fig. 448.—Human embryo of 2.4 mm. showing the neural tube partially closed. (From Ranson's "The Anatomy of the Nervous System," after KoUmann; courtesy of W. B. Saunders Company.). CEPHALIC FLEXURE OlENCEPHALON TELENCEPHALON I.FOREBRAIN OPTIC VESICLE ^ jf, OLFACTORY LOBE-^*^ II.MIDBRAIN INFUNDIBULUM MAMMILLARYBODY OTIC CAPSULE III.HINDBRAIN CEREBELLUM. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - colora Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/comparative-anatomy-anatomy-comparative-prosencephalon-stomodaum-amnion-cut-yolk-sac-body-stalk-fig-448human-embryo-of-24-mm-showing-the-neural-tube-partially-closed-from-ransons-quotthe-anatomy-of-the-nervous-systemquot-after-koumann-courtesy-of-w-b-saunders-company-cephalic-flexure-olencephalon-telencephalon-iforebrain-optic-vesicle-jf-olfactory-lobe-iimidbrain-infundibulum-mammillarybody-otic-capsule-iiihindbrain-cerebellum-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-colora-image232675135.htmlRMREF7E7–. Comparative anatomy. Anatomy, Comparative. Prosencephalon Stomodaum Amnion {cut) Yolk sac Body stalk Fig. 448.—Human embryo of 2.4 mm. showing the neural tube partially closed. (From Ranson's "The Anatomy of the Nervous System," after KoUmann; courtesy of W. B. Saunders Company.). CEPHALIC FLEXURE OlENCEPHALON TELENCEPHALON I.FOREBRAIN OPTIC VESICLE ^ jf, OLFACTORY LOBE-^*^ II.MIDBRAIN INFUNDIBULUM MAMMILLARYBODY OTIC CAPSULE III.HINDBRAIN CEREBELLUM. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - colora
. Anatomy, descriptive and applied. Anatomy. THE BRAIN OR ENCEPHALON 851 The simple brain tube expands very early in intrauterine life in a sac-like manner, with the formation of three dilatations or pouches—the primary brain vesicles—demarcated by two constrictions.' The vesicles are designated respec- tively the Fore-brain (Prosencephalon). Mid-brain (Mesencephalon). Hind-brain (Rhombencephalon or Metencephalon). NEUROPORE -. l 2 IFORE.-BRAJN Fio. 620.—Brain tube of embryo salamander, sagittal section, showing neural segmentation (neuromeres): F.l.lll. Fore-brain neuronieres. M. l.-II. Mid Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/anatomy-descriptive-and-applied-anatomy-the-brain-or-encephalon-851-the-simple-brain-tube-expands-very-early-in-intrauterine-life-in-a-sac-like-manner-with-the-formation-of-three-dilatations-or-pouchesthe-primary-brain-vesiclesdemarcated-by-two-constrictions-the-vesicles-are-designated-respec-tively-the-fore-brain-prosencephalon-mid-brain-mesencephalon-hind-brain-rhombencephalon-or-metencephalon-neuropore-l-2-ifore-brajn-fio-620brain-tube-of-embryo-salamander-sagittal-section-showing-neural-segmentation-neuromeres-fllll-fore-brain-neuronieres-m-l-ii-mid-image236772333.htmlRMRN5WEN–. Anatomy, descriptive and applied. Anatomy. THE BRAIN OR ENCEPHALON 851 The simple brain tube expands very early in intrauterine life in a sac-like manner, with the formation of three dilatations or pouches—the primary brain vesicles—demarcated by two constrictions.' The vesicles are designated respec- tively the Fore-brain (Prosencephalon). Mid-brain (Mesencephalon). Hind-brain (Rhombencephalon or Metencephalon). NEUROPORE -. l 2 IFORE.-BRAJN Fio. 620.—Brain tube of embryo salamander, sagittal section, showing neural segmentation (neuromeres): F.l.lll. Fore-brain neuronieres. M. l.-II. Mid
. Embryology. Embryology; Embryology; genealogy. PROSENCEPHALON RHOMBENCEPHALON. OPTIC VESICLE MESENCEPHALON HEART VITELLINE VEIN NEURAL TUBE PRIMITIVE STREAK Fig. 129. An embryo of 14 pairs of somites about 34 hours of incubation age and about 4.5 mm. in length. The nervous system has formed three primary divisions of the brain: prosencephalon, mesencephalon, and rhombencephalon. Paired optic vesicles grow out laterally from the prosencephalon. The foregut is outlined by two folds on either side of brain. The heart is well formed and beating. Paired vitelline veins can be seen entering heart. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/embryology-embryology-embryology-genealogy-prosencephalon-rhombencephalon-optic-vesicle-mesencephalon-heart-vitelline-vein-neural-tube-primitive-streak-fig-129-an-embryo-of-14-pairs-of-somites-about-34-hours-of-incubation-age-and-about-45-mm-in-length-the-nervous-system-has-formed-three-primary-divisions-of-the-brain-prosencephalon-mesencephalon-and-rhombencephalon-paired-optic-vesicles-grow-out-laterally-from-the-prosencephalon-the-foregut-is-outlined-by-two-folds-on-either-side-of-brain-the-heart-is-well-formed-and-beating-paired-vitelline-veins-can-be-seen-entering-heart-image231282239.htmlRMRC7PRY–. Embryology. Embryology; Embryology; genealogy. PROSENCEPHALON RHOMBENCEPHALON. OPTIC VESICLE MESENCEPHALON HEART VITELLINE VEIN NEURAL TUBE PRIMITIVE STREAK Fig. 129. An embryo of 14 pairs of somites about 34 hours of incubation age and about 4.5 mm. in length. The nervous system has formed three primary divisions of the brain: prosencephalon, mesencephalon, and rhombencephalon. Paired optic vesicles grow out laterally from the prosencephalon. The foregut is outlined by two folds on either side of brain. The heart is well formed and beating. Paired vitelline veins can be seen entering heart.
. Embryology. Embryology; Embryology; genealogy. OPTIC VESICLE MESENCEPHALON HEART VITELLINE VEIN NEURAL TUBE PRIMITIVE STREAK Fig. 129. An embryo of 14 pairs of somites about 34 hours of incubation age and about 4.5 mm. in length. The nervous system has formed three primary divisions of the brain: prosencephalon, mesencephalon, and rhombencephalon. Paired optic vesicles grow out laterally from the prosencephalon. The foregut is outlined by two folds on either side of brain. The heart is well formed and beating. Paired vitelline veins can be seen entering heart. The anterior intestinal portal Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/embryology-embryology-embryology-genealogy-optic-vesicle-mesencephalon-heart-vitelline-vein-neural-tube-primitive-streak-fig-129-an-embryo-of-14-pairs-of-somites-about-34-hours-of-incubation-age-and-about-45-mm-in-length-the-nervous-system-has-formed-three-primary-divisions-of-the-brain-prosencephalon-mesencephalon-and-rhombencephalon-paired-optic-vesicles-grow-out-laterally-from-the-prosencephalon-the-foregut-is-outlined-by-two-folds-on-either-side-of-brain-the-heart-is-well-formed-and-beating-paired-vitelline-veins-can-be-seen-entering-heart-the-anterior-intestinal-portal-image231282238.htmlRMRC7PRX–. Embryology. Embryology; Embryology; genealogy. OPTIC VESICLE MESENCEPHALON HEART VITELLINE VEIN NEURAL TUBE PRIMITIVE STREAK Fig. 129. An embryo of 14 pairs of somites about 34 hours of incubation age and about 4.5 mm. in length. The nervous system has formed three primary divisions of the brain: prosencephalon, mesencephalon, and rhombencephalon. Paired optic vesicles grow out laterally from the prosencephalon. The foregut is outlined by two folds on either side of brain. The heart is well formed and beating. Paired vitelline veins can be seen entering heart. The anterior intestinal portal
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