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Male Reproductive Anatomy and Function
- 1. Male Reproductive System NAME :AQIB KHAN Discipline : SURGICAL
- 2. Male reproductivesystem External Genital Organs 1. Penis Accessory Glands: 2. Scrotum 1.Seminal Vesicles Internal Genital Organs 2.Prostate Gland 1. Testes 3. bulbourethral Glands 2. Epididymis 3. Vas Deference
- 3. ExternalGenital Organs Penis • penis is the organ by which Sperm is introduced into the female body during sexual intercourse. • It is composed of spongy tissue – becomes erect and turgid when filled with blood. Scrotum • a pouch-like structurethat lies below the symphysis pubis in front of the upper parts of the thighs and behind the penis. • it holds and protect the testicles. • it is divided into two compartments eachof which contains: 1:testis, 1: Epididymis, Testicular end of a spermatic cord. • it also contains numerous nerves, blood vessels and smooth muscles. • connected with pelvic cavity through the inguinal canal.
- 5. Internal Genital Organs Testis: Testis are male gonads which are situated outside the body in a sac called scrotum. Weight: it’s weight is 25 gm. Shape : oval shape Temperature: The temperature of scrotal sac is 2-5 C less than body temperature.
- 6. Lobules • Each testis is divided into 200-300 lobules. • Each lobule contain 2-4 seminiferous tubules. Seminiferous Tubules • these are the coiled tubule in testes in which spermatogenesistakes place. The length of Seminiferous Tubules is 60-80cm.
- 8. Epididymis • These are coiled ducts present on the backside of the testes. • Its function is the storage and transport of sperm. • Here the sperms are nourished and gain the ability of swimming. VasDeference • It is tube which runs from the epididymis to urethra. • It carries sperm from epididymis to urethra.
- 9. AccessoryGlands Seminal Vesicles it is a pair of exocrine gland in male reproductive system.it secretes many componentsof semen during ejaculation. Secretion: Seminal vesicle secretesan alkaline fluid which contains fructose sugar , ascorbic acid, coagulative enzymes and other substance. Prostate Gland • these gland occur in pair form just below the bladder. • it is a walnut size gland that encircles the urethra. • It secretes a milky , slightly acidic that contains citrate and enzymes.
- 11. Function of Male reproductive system Function of Male reproductive system are giving below: • Produce, maintainand transport sperm cells and semen. Sperm cells are male reproductive cells. Semen is the protective fluid around sperm. • Discharge sperm. • Produce and secrete male sex hormones.
- 18. Sperm(Spermatozoa) It is a small haploid cell which consistsof the following parts: • Head • Neck • Mid piece • Tail Head : 1. it is broadest part of sperm , about 4-5um long and 3um wide. 2. it contains the structures i.e nucleus, acrosome and flagellar basal body.
- 19. • Nucleus fills most of the head and contain haploid chromosomes. Acrosome: It is a lysosome in the form of a thin cap covering the upper half of nucleus.it contains an enzymes (hyaluronidase) which are later used to penetrate the egg. Neck : It is a very short and contain a pair of centrioles. Mid piece: It is cylindrical and thickest part of sperm . it contains numerous mitochondria which provide ATP for the movement of sperm in female reproductive tract .
- 20. Tail:
- 22. Thank you