Practical anatomy: a manual of dissections / by Christopher Heath.

  • Christopher Heath
Date:
1870
Catalogue details

Licence: Public Domain Mark

Credit: Practical anatomy: a manual of dissections / by Christopher Heath. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

    548/600 (page 538)
    surface of the choroid may be seen (hi an hijected specimen) the loops of bloodvessels [see p. 542] to which the name vaaa vorticosa [outer coat] has been given. Within this is the tunica Ruyschiana [middle coat] a plexus of capillaries; Fig. 245. The Choroid Coat and the Distuibdtion of the Vasa Vorticosa (from Wilson, after Arnold). 1. Part of the sclerotic coat. 2. Optic nerve. 3. 3. Clioroid coat. 4. Ciliary muscle. 5. Iris. 6. 6. Vasa vorticosa. 7. 7. Trunks of the vasa vorticosa at the poiut where they have pierced the sclerotica. 8, 8. Posteriorciliary veins which enter the eyeball in company with the posterior ciliary arteries, by pierc- ing the sclerotic at 9. 10. One of the long ciliary nerves, ac- companied by a long ciliary vein. which is again lined by the choroidal epithelium (membrana pigmenti) [inner coat]. The dark pigment of the choroid is interspersed among the vessels and is washed out when the eye is immersed in water. Surrounding the iris is a ring which is the Ciliary Muscle^ (Figs. 245, 4, and 246, m Cj, and m c^ composed of unstriped fibre and having a gray appearance. The anterior part of the ciliary muscle is connected with the sclerotic coat [at the corneal border] and the posterior part is attached to the ciliary processes which pass inwards ' [Before the miascular nature of the ciliary muscle was under- stood it was called the ciliary ligament, and these two names are still often used interchangeably. The ciliary body comprises both the ciliary muscle or ligament, and the ciliary processes.]