7. Great Sacro Sciatic ligament.
a, a. Erector Muscles of the Penis.
b, b. Accelerator Urinæ Muscles.
c. Line whence the above Muscles take their origin.
d. Transverse Muscles of the Perinœum.
e, e. Sphincter Muscle of the Anus, supposed to be distended with tow or wool.
f, f. Levatores Ani.
g, g. Great Gluteal Muscles.
A brief description of the structures displayed in the two preceding and the following drawing (p. 14) will render this part of our subject perfect.
The Fasciæ means the coverings of muscles, such as is seen in cutting a domestic joint—a leg of mutton, for instance—a shiny surface; their use is to strengthen the action of the muscles, to bind them well together, and they mostly exist about the buttocks, back, &c.