608 GENITAL ORGANS OF THE COW 
about an inch (ca. 3 cm.) long, and readily admits the end of a finger. The two 
glandule vestibulares majores? are situated in the lateral walls of the vulva, under 
the constrictor vulvee. They are little over an inch (ca. 3 em.) long and about half 
an inch (ca. 1.5 em.) in width. Each has two or three ducts which open into a 
small pouch of the mucous membrane; this cul-de-sac opens on the floor of the 
vulva, about an inch and a half (ca. 83-4 em.) lateral to and behind the external 
d- 
Fic. 539.—Cross-secTION oF MAMMARY GLANDS OF Cow. 
a, Body of gland; 6, lactiferous sinus; c, cavity of teat; d, lactiferous duct; e, intermammary groove; f, septum be- 
tween glands; g, supramammary fat. 
urethral orifice. The gland consists of lobules separated by relatively thick trabee- 
ule of connective tissue and unstriped muscle. The glandule vestibulares 
minores occur along the median ventral groove. Numerous lymph nodules are 
present in the mucous membrane, especially in the ventral part; they may be 
large enough to cause visible prominences. 
The clitoris has very short crura, but the body is four or five inches (ca. 10-12 
1 The form and position of this pouch should be carefully noted on account of the difficulty 
it causes in catheterizing the bladder. If the catheter is passed along the ventral wall of the 
vulva (as in the mare), it will always enter the pouch instead of the urethra. 
2 Also known as the glands of Bartholin. 
