Lab 17 - Image 12

Longitudinal section of horse penis. The ram penis is not sectioned. 1, urethral process (elongated in sheep and goat); 2, glans penis; 3, urethral sinus (where a bean is formed); 4, fossa glandis; 5, corpus spongiosum penis (continued as corpus spongiosum glandis, the erectile tissue of the glans); 6, corpus cavernosum penis (main erectile tissue of the penis); 7, preputial lining.