The anatomist's vade mecum : a system of human anatomy . theouter half of the orbit, but becomes thin to its inner side. Its use isto retain the tarsal cartilages in their place, and give support to thelids; hence it has been named the hroad tarsal ligament. The Meibomian glands^ are embedded in the internal surface of thecartilages, and are very distinctly seen on examining the inner aspectof the lids. They have the appearance of parallel strings of pearls,about thirty in number in the upper cartilage, and somewhat fewerin the lower; and open by minute foramina on the edges of the c
The anatomist's vade mecum : a system of human anatomy . theouter half of the orbit, but becomes thin to its inner side. Its use isto retain the tarsal cartilages in their place, and give support to thelids; hence it has been named the hroad tarsal ligament. The Meibomian glands^ are embedded in the internal surface of thecartilages, and are very distinctly seen on examining the inner aspectof the lids. They have the appearance of parallel strings of pearls,about thirty in number in the upper cartilage, and somewhat fewerin the lower; and open by minute foramina on the edges of the correspond in length with the breadth of the cartilage, and areconsequently longer in the upper than in the lower lid. Each gland consists of a single lengthened follicle or tube, into whicha number of small clustered follicles open; the latter are so numerousas almost to conceal the tube by which the secretion is poured outupon the margin of the lids. Occasionally an arch is formed betweentwo of them, and produces a very graceful appearance. Fig. The edges of the eyelids are furnished with a triple row of longthick hairs, which curve upwards from the upper lid, and downwardsfrom the lower, so that they may not interlace with each other in theclosure of the eyelids, and prove an impediment to the opening of theeyes. These are the eyelashes {cilia), important organs of defence tothe sensitive surface of so delicate an organ as the eye. The Conjunctiva is the mucous membrane of the eye. It covers thewhole of its anterior surface, and is then reflected upon the lids so asto form their internal layer. The duplicatures formed between the * Henry Meibomius, de Vasis Palpebrarum Novis, The Meibomian glands, as seen upon the inner side of the eyelids. AfterArnold. 1. The upper lid. 2. The lower lid. 3, 3. The conjunctiva. 4. Theapertures of the Meibomian glands, forming a row along the free border ofeach eyelid. 5, .5. The papillae lachrymales. 6, 6. The puncta lachrymalia
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Keywords: ., boo, bookcentury1800, booksubjectanatomy, booksubjecthumananatomy
