Accessory sex glands in Animals
These are Accessory sex glands in Animals presents- Seminal vesicle, Prostate and Cowper’s gland.
Seminal vesicle of Animals
Seminal vesicle of Bull
Seminal vesicle of Bull are two compact glandular organs with a lobulated surface. They are situated on the dorsal surface of the bladder.
Dorsally they are related to rectum. It is about 10 to 12 cm, long 5 cm wide and 3 cm thick. Each consists of a thick walled tube folded on itself in a tortuous manner. The excretory ducts open on either side of the colliculus seminalis lateral to the openings of the vas deferens, at the ejaculatory orifices.
Seminal vesicle of Ram and Buck
Seminal vesicle of Ram and Buck is same as of Bull/Ox.
Seminal vesicle of Stallion
Seminal vesicle of Stallion are two elongated and pyriform sacs. Each consists of a rounded blind end – fundus, a middle narrow part- body and a caudal constricted part – neck or duct. Each is about 15 to 20 cm long.
The excretory duct opens in common with or along side the vas deferens in a pouch of mucous membrane on the side of colliculus seminalis.
Seminal vesicle of Boar
Seminal vesicle of Boar glands are exceedingly large. They are distinctly lobulated and glandular. About half a dozen or more large thin walled ducts emerge from the medial surface of each and converge to a smaller excretory duct and this terminates at a slit like opening on the colliculus seminalis.
Seminal vesicle of Dog
Seminal vesicle is absent in dog.
Seminal vesicle of Rabbit
Seminal vesicle of Rabbit is medially situated and opens into the prostatic segment of the urethra immediately in front of the colliculus seminalis.
Seminal vesicle of Cock
Seminal vesicle is absent in cock.
Prostate of Animals
Prostate of Bull
The prostate of bull is a musculo-glandular organ, which is pale yellow in colour. It consists of two parts – the body and pars disseminata.
The body is a small mass, which stretches across the dorsal surface of the neck of the bladder and the origin of the urethra. The pars disseminata surrounds the pelvic part of the urethra.
The secretion is taken by prostatic ducts which open into the urethra behind the colliculus seminalis in rows – two of which are between the two folds of mucous membrane passing backwards from colliculus seminalis while two others occur on either side lateral to the folds.
Prostate of Buck and Ram
Prostate of Buck and Ram is entirely disseminate. There is no body portion.
Prostate of Stallion
Prostate of Stallion is a lobulated gland lies on the neck of the bladder and is large and consists of two lateral lobes and a connecting isthmus.
The superficial face of the lobes is related to the rectum and the deep face is concave and is related to the seminal vesicle.
The isthmus is related ventrally to the uterus masculinus, vas deferens. There are 15 to 20 ducts on either side opening, lateral to the ejaculatory orifices.
Prostate of Dog
Prostate of Dog is very large, globular and surrounds the neck of the bladder. A median furrow indicates its division into two lobes. The ducts are numerous in dog.
Prostate of Boar
Prostate of Boar is concealed by the seminal vesicle. The body of the gland overlies the neck of the bladder.
Prostate of Rabbit
The prostate of Rabbit lies in the dorsal wall of the more caudal part of the seminal vesicle.
Prostate of Cock
Prostate is absent in cock.
