. Anatomy, descriptive and applied. Anatomy. THE VITREOUS BODY 1105 likf synapsis occurs between the processes of the inner granules and the rofl and cone elements. The arteria centralis retinae (Fig. SIO) and its accompanying vein, vena centralis retinae, pierce the optic nerve, and enter the globe of the eye through the porus opticus. They bifurcate on the surface of the papilla or just beneath it into an upper and a lower branch, and each of these again divides into an inner or nasal, and an outer or temporal branch; these at first run between the hyaloid membrane and the nerve layer; but t
. Anatomy, descriptive and applied. Anatomy. THE VITREOUS BODY 1105 likf synapsis occurs between the processes of the inner granules and the rofl and cone elements. The arteria centralis retinae (Fig. SIO) and its accompanying vein, vena centralis retinae, pierce the optic nerve, and enter the globe of the eye through the porus opticus. They bifurcate on the surface of the papilla or just beneath it into an upper and a lower branch, and each of these again divides into an inner or nasal, and an outer or temporal branch; these at first run between the hyaloid membrane and the nerve layer; but they soon enter the latter, and pass forward, dividing dichotomously. From these branches a minute capillary plexus is given off, which does not extend beyond the inner nuclear layer. The macula receives small twigs from the temporal branches and others directly from the central artery; these do not, however, reach as far as the fovea centralis, which has no bloodvessels. The branches of the arteria centralis retinae do not anastomose with each other—in other words, they are "terminal ; In the fetus, a small vessel passes forward, through the hyaloid canal in the vitreous body, to the posterior surface of the capsule of the lens (Fig. 805). THE REFRACTING MEDIA. The Refracting media are three—viz.: Aqueous humor. Vitreous body. Crystalline lens, I. The Aqueous Humor (Humor Aqueus). The aqueous humor completely fills the lymph space known as the aqueous chamber, the space which is bounded in front by the cornea and behind by the lens and its suspensory ligament and the ciliary body (Fig. 829). The aqueous chamber is partly divided by the iris into two communicating parts, the anterior and posterior chambers (Figs. 805 and 829). The posterior chamber (camera oculi posterior') is only a narrow chink between the peripheral part of the iris, the suspensory ligament of the lens, and the ciliary processes. The anterior chamber (camera oculi anterior) is bounded i
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1913
