Archive image from page 463 of The development of the human. The development of the human body : a manual of human embryology . developmentofhum00mcmu Year: 1914 45: THE LENS stars become more complicated, being either six-rayed or more usually nine-rayed in the adult condition'(Fig. 270). As early as the second month of development the lens vesicle becomes completely invested by the mesodermal tissue in which blood-vessels are developed in considerable numbers, whence the Fig. -Posterior (Inner) Surface of the Lens from an Adult showing the Sutural Lines.—(Rabl.) investment is terme
Archive image from page 463 of The development of the human. The development of the human body : a manual of human embryology . developmentofhum00mcmu Year: 1914 45: THE LENS stars become more complicated, being either six-rayed or more usually nine-rayed in the adult condition'(Fig. 270). As early as the second month of development the lens vesicle becomes completely invested by the mesodermal tissue in which blood-vessels are developed in considerable numbers, whence the Fig. -Posterior (Inner) Surface of the Lens from an Adult showing the Sutural Lines.—(Rabl.) investment is termed the tunica vasculosa lends (Fig. 278, tv). The arteries of the tunic are in connection principally with the hyaloid artery of the vitreous humor (Fig. 276), and consist of numerous fine branches which envelop the lens and terminate in loops almost at the center of its outer surface. This tunic undergoes degenera-
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