The elements of physiological physics The elements of physiological physics: an outline of the elementary facts, principles, and methods of physics; and their applications in physiology elementsofphysio00mgre Year: 1884 Chap. XXIX.] THE PHAROSCOPE. 385 convex lens in front of the crystalline. This is practically accomplished by the lens itself being capable of adjustment for varying distances, a capacity termed the power of accommodation. It consists of an ability to alter the convexity of the lens. This is effected by the contraction of the ciliary muscle, which relaxes the anterior ligament Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-elements-of-physiological-physics-the-elements-of-physiological-physics-an-outline-of-the-elementary-facts-principles-and-methods-of-physics-and-their-applications-in-physiology-elementsofphysio00mgre-year-1884-chap-xxix-the-pharoscope-385-convex-lens-in-front-of-the-crystalline-this-is-practically-accomplished-by-the-lens-itself-being-capable-of-adjustment-for-varying-distances-a-capacity-termed-the-power-of-accommodation-it-consists-of-an-ability-to-alter-the-convexity-of-the-lens-this-is-effected-by-the-contraction-of-the-ciliary-muscle-which-relaxes-the-anterior-ligament-image239661876.html
RMRWWF4M–The elements of physiological physics The elements of physiological physics: an outline of the elementary facts, principles, and methods of physics; and their applications in physiology elementsofphysio00mgre Year: 1884 Chap. XXIX.] THE PHAROSCOPE. 385 convex lens in front of the crystalline. This is practically accomplished by the lens itself being capable of adjustment for varying distances, a capacity termed the power of accommodation. It consists of an ability to alter the convexity of the lens. This is effected by the contraction of the ciliary muscle, which relaxes the anterior ligament
Elements of human physiology (1907) Elements of human physiology elementsofhumanp05star Year: 1907 55() PHYSIOLOGY flat, so that the eye is accominodated for intinite distanee, Wlieii tlie eye is to be accommodated for near objects the ciliary processes are pulled forwards and inwards by the contraction of the ciliary muscle, and so tlie suspensory ligament is relaxed and the front of the lens allowed to bulge forwards. The ciliary muscle rmis from the corneo-sclerotic junction, to be attached to the ciliary processes and front part of the choroid. Accommodation is a voluntary action, althoug Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/elements-of-human-physiology-1907-elements-of-human-physiology-elementsofhumanp05star-year-1907-55-physiology-flat-so-that-the-eye-is-accominodated-for-intinite-distanee-wlieii-tlie-eye-is-to-be-accommodated-for-near-objects-the-ciliary-processes-are-pulled-forwards-and-inwards-by-the-contraction-of-the-ciliary-muscle-and-so-tlie-suspensory-ligament-is-relaxed-and-the-front-of-the-lens-allowed-to-bulge-forwards-the-ciliary-muscle-rmis-from-the-corneo-sclerotic-junction-to-be-attached-to-the-ciliary-processes-and-front-part-of-the-choroid-accommodation-is-a-voluntary-action-althoug-image239674166.html
RMRWX2RJ–Elements of human physiology (1907) Elements of human physiology elementsofhumanp05star Year: 1907 55() PHYSIOLOGY flat, so that the eye is accominodated for intinite distanee, Wlieii tlie eye is to be accommodated for near objects the ciliary processes are pulled forwards and inwards by the contraction of the ciliary muscle, and so tlie suspensory ligament is relaxed and the front of the lens allowed to bulge forwards. The ciliary muscle rmis from the corneo-sclerotic junction, to be attached to the ciliary processes and front part of the choroid. Accommodation is a voluntary action, althoug
Elements of human physiology (1907) Elements of human physiology elementsofhumanp05star Year: 1907 636 PHYSIOLOGY aqueduct of Sylvius, below the anterior corpus quadrigeminum. It emerges from the inner side of the crus cerebri. It is the motor nerve for the levator palpebrarum, superior, inferior, and internal recti, and inferior oblique muscles. It also supplies the constrictor iridis and the ciliary muscle. Stimu- lation of it therefore causes the eye to look upwards and inwards, with contraction of the pupil and spasm of accommo- dation. By careful stimulation of various parts of its nucle Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/elements-of-human-physiology-1907-elements-of-human-physiology-elementsofhumanp05star-year-1907-636-physiology-aqueduct-of-sylvius-below-the-anterior-corpus-quadrigeminum-it-emerges-from-the-inner-side-of-the-crus-cerebri-it-is-the-motor-nerve-for-the-levator-palpebrarum-superior-inferior-and-internal-recti-and-inferior-oblique-muscles-it-also-supplies-the-constrictor-iridis-and-the-ciliary-muscle-stimu-lation-of-it-therefore-causes-the-eye-to-look-upwards-and-inwards-with-contraction-of-the-pupil-and-spasm-of-accommo-dation-by-careful-stimulation-of-various-parts-of-its-nucle-image239665967.html
RMRWWMAR–Elements of human physiology (1907) Elements of human physiology elementsofhumanp05star Year: 1907 636 PHYSIOLOGY aqueduct of Sylvius, below the anterior corpus quadrigeminum. It emerges from the inner side of the crus cerebri. It is the motor nerve for the levator palpebrarum, superior, inferior, and internal recti, and inferior oblique muscles. It also supplies the constrictor iridis and the ciliary muscle. Stimu- lation of it therefore causes the eye to look upwards and inwards, with contraction of the pupil and spasm of accommo- dation. By careful stimulation of various parts of its nucle
Elements of human physiology (1907) Elements of human physiology elementsofhumanp05star Year: 1907 560 PHYSIOLOGY Hypcrmetropia.—If, on the other hand, the eyeball be too short in its antero-posterior diameter, the parallel rays entering the eye will come to a focus at a point behind the retina. In order that a distinct image may be formed, even of distant objects, it will be necessary to increase the curva- ture of the lens by contracting the ciliary muscle. Such eyes are hypermetropic or long-sighted. Fig. 251. a h e Lens from human eye at different periods of life (Allen Thomson). a, at bi Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/elements-of-human-physiology-1907-elements-of-human-physiology-elementsofhumanp05star-year-1907-560-physiology-hypcrmetropiaif-on-the-other-hand-the-eyeball-be-too-short-in-its-antero-posterior-diameter-the-parallel-rays-entering-the-eye-will-come-to-a-focus-at-a-point-behind-the-retina-in-order-that-a-distinct-image-may-be-formed-even-of-distant-objects-it-will-be-necessary-to-increase-the-curva-ture-of-the-lens-by-contracting-the-ciliary-muscle-such-eyes-are-hypermetropic-or-long-sighted-fig-251-a-h-e-lens-from-human-eye-at-different-periods-of-life-allen-thomson-a-at-bi-image239653355.html
RMRWW48B–Elements of human physiology (1907) Elements of human physiology elementsofhumanp05star Year: 1907 560 PHYSIOLOGY Hypcrmetropia.—If, on the other hand, the eyeball be too short in its antero-posterior diameter, the parallel rays entering the eye will come to a focus at a point behind the retina. In order that a distinct image may be formed, even of distant objects, it will be necessary to increase the curva- ture of the lens by contracting the ciliary muscle. Such eyes are hypermetropic or long-sighted. Fig. 251. a h e Lens from human eye at different periods of life (Allen Thomson). a, at bi
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