Penis
The penis is a male copulatory organ used during mating
The penis contains three cylindrical masses of erectile tissue - two dorsal corpora cavernosa and one ventral corpus spongiosum . These bodies surrounded by fibrous tissue .
The corpus spongiosum , through which the urethra extends , enlarges at its distal end to form a sensitive cone - shaped glans penis .
During sexual arousal, the three bundles of tissue in the penis become engorged with blood .
Male Accessory Glands
Seminal vesicle : These are paired glandular , sac - like structures near the base of the bladder, secreting fluids which constitute approximately 60 % of the volume of semen . It also contains fructose and prostaglandins.
Fructose , which is present in seminal fluid and is not produced anywhere else in the body is used for confirmation of sexual intercourse / rape during forensic test .
Prostate gland : It is a single large gland surrounding urethra . It produce a milky secretion which forms 25 % of the volume of semen.
The secretions of prostate gland also contain glycoprotein prostate specific antigen ( PSA ) which liquefies the clotted semen .
Bulbourethral ( Cowper's ) gland : These are a pair of glands present on either side of membranous urethra . They secrete an alkaline fluid that neutralises acids from urine in the urethra .
Semen is a collection of secretions from the seminal vesicles ; prostate gland : Cowper's glands ; sperms from testes . It is ejected from the penis during ejaculation .
Hormonal Control of Male Reproductive System
The growth , maintenance and functions of the male reproductive organs are under the control of hormonal control .
Hormonal control of male reproductive system is summarised in the given flow chart
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MANISH MEVADA
M.Sc, M.Phil, B.Ed
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