crus (krus)

PI. crura. 1. The lower limb. 2. That part of the lower limb that extends from the knee to the ankle. 3. Any leglike structure, anterior c. of the stapes. The anterior and straighter of the two proce es which connect the neck of the stapes with the base. c. am pull are. The enlarged or ampullary extremity of each semicircular canal of the internal ear, in contradistinction to c. simplex. c. canal is semicircular is simplex. The straight, unexpanded extremity of each semicircular canal, c. cerebri. See crura cerebri, under crura, c. gland is. The inferior fold of the nymphae, which pa es beneath the clitoris, becomes attached to the glans. and forms the frenum. c. nymphae externum. The uppermost part of the two branches into which each of the labia minor a divides. It unites with its fellow of the opposite side in the prepuce of the clitoris, c. nymphae internum. The lower of the two branches into which each of the labia minor a divides. It unites with its fellow of the opposite side to form the frenum of the clitoris, posterior c. of the stapes. The posterior and most curved of the two proce es of the stapes which unite the neck with the base. [B. N. A., cms.} [Lat., crus, leg, limb.]