ClipArt ETC
Longitudinal section of the primary optic vesicle in the chick. Labels: A, from an embryo of 65 hours; B, a few hours later; C, of the fourth day; c, the corneous layer or epidermis, presenting in A the open depression from the lends , which is closed in B and C; l, the lens follicle and lens; pr, the primary optic vesicle; in A and B, the pedicle is shown; in C, the section being to the side of the pedicle, the latter is not shown; v, the secondary ocular vesicle and vitreous humour.

Development of the Primary Optic Vesicle in a Chick

Longitudinal section of the primary optic vesicle in the chick. Labels: A, from an embryo of 65 hours;…