Corpora Cavernosa in the Domestic Cat 
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io 6) 
fibrous trabecule are much stronger, and occupy relatively a much 
larger space than in the cat. The amount of adipose and cavernous 
tissue is reduced in proportion. 
In the ram’s penis, the condition is similar to that in the dog, ex- 
cept that the adipose tissue occurs chiefly in the proximal portion, little 
or none distally. Wether’s penis contains fat in about the same amount 
as the ram, but less cavernous, and more fibrous tissue. Lamb’s penis 
similar, except that the adipose tissue is less abundant. 
In the boar’s penis, adipose tissue is likewise found in considerable 
amount in the proximal region, especially in the crura. Fibro-caver- 
Fie. 6. Cross-section of injected penis of the cat, through crura and bulb. x 10. 
A, tunica albuginea; C, crus penis; B, bulbus urethrae; ad, adipose tissue; a, artery 
of crus; ur, urethra; x, duct of Cowper’s gland, between urethra and bulb; ic, 
ischiocavernosus; be, bulbocavernosus ; rp, retractor penis. 
nous structure throughout. In the barrow the cavernous tissue is re- 
duced, but the adipose tissue remains in about the same amount. 
Sections of the bull’s penis show the corpora cavernosa to be strongly 
fibro-cavernous throughout, from crura to distal extremity. Some scat- 
tered adipose tissue proximally, none distally. The corpora cavernosa 
of both sides are united into a single body. From the thick tunica 
albuginea fibrous trabecule extend inward, and unite in the center to 
form a fibrous core on each side. The corpus spongiosum has the usual 
cavernous structure. 
The penis of the steer shows a marked change, however, The fibrous 
tissue remains, being even more strongly developed. The cavernous 
tissue almost entirely disappears, and is replaced by adipose tissue, espe- 
cially in the proximal region. Sometimes little or none is found in the 
