Wednesday, March 31, 2010

Internal Organs

Male Reproductive Internal Organs
(i)Urethra: It is a tube through which urine and semen pass out of the body.
(ii) Testes: Testes are two into number and lie inside the scrotum outside the abdominal cavity. Testes are male reproductive organs where spermatozoa are formed and male sex hormone produce. Each testes contains up to 300 tubules. Each tubules up to 4 somniferous tubules which in the sperms of produced.
(iii) Epididymis: It is a very long and highly convoluted tube of bout 6 meters length which lies out side and partially encircling the testes. It is made of compact mass of small coiled tubules. It si a place where sperm are produced.
(iv) Vas deferens: It is a thick welled muscular tube that extends from epididymis to ejaculatory duct. It is a route through which sperms travel from epididymis ejaculatory duct.

(v) Ejaculatory duct: It is a small duct about 2 cm. longs and opens to the urinary duct. It passes semen and sperms to the urinary duct.
(vi) Seminal vesicles: The vesicles are to small tubular glands and lying on the posterior side of the bladder. They produce and expel the thick milky fluid that helps to keep spermatozoa alive.
(vii) Prostate glands: It is a small glands which lies behind the urinary bladder. Prostate gland produces a thin milky fluid that forms part of the semen.

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