Reproduction. Male. Male. http://trc.ucdavis.edu/mjguinan/apc100/modules/Reproductive/_topics.html. Role of the male. Produce ample amounts of viable sperm Willing and able to deliver semen (containing sperm) to female to AI. Anatomy of MALE. Paired TESTES Epididimyis Vas deferens
a duct system, and related glands.
Sperm are produced in the testis and mature in the epididymis.
The ductus deferens (vas deferens) propel sperm to the urethra
The ampulla is a glandular region of the terminal portion of
the ductus deferens. It is absent in cats and pigs.
The prostate gland empties into the urethra.
It provides the bulk of seminal fluid in most species.
The vestibular glands vary greatly in size depending on the species.
They are absent in canines and felines.
The bulbourethral glands are present in the pig,
equine and bovine, but missing in the canine.
Varies by species - Horse: erectile tissue, blood engorgement,
Ram & boar: less erectile tissue. Sigmoid flexure.
Seminiferous tubules form the mass of the testes and are the sites of
The spermatogonia are the germ cells of the testis. Unlike
mamallian oogonia, they continue to divide throught life.
The spermatogenic cells--spermatogonia, primary spermatocytes,
secondary spermatocytes, spermatids and spermatozoa--represent
different cell stages in spermatogenesis.
The outlines of sustentacular cells are not distinct. Maturing
spermatozoa are found embedded, head first, in the sustentacular
cells, which provide mechanical support, protection and possibly
nutrition for the developing spermatozoa.