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.

    546/600 (page 536)
    cular Opening (in man) in the centre of the iris, which varies in size according to the contraction of the tissue of the iris under the influence of light. [The pigment on its posterior surface is called the Uvea. The central circular muscular fibres of the iris are supplied by the third nerve and the peripheral radiating fibres by the sympathetic] The Posterior Chamber (Fig. 243,) is smaller than the anterior, and can be hardly said to exist when the aqueous humor has been let out. It is between the iris and the an- terior layer of the capsule of the lens. [In order to obtain a general idea of the anatomy of the interior of the eye it will be best to divide a Second Eye by the scissors into an anterior and a posterior half, when, without any further dissection, the student can observe the thickness and general appearance of the Fig. 244. The Choroid and Iris, enlarged (from Gray). three coats of the eye, the retinal vessels, the vitreous humor, the position of the lens and around it the ring of the ciliary processes. Keep the two halves undisturbed for further xise and proceed now to