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Reproductive System
Male Reproductive Functions
Spermatogenesis
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Raphael John
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Cards (16)
Spermatogenesis
- or simply sperm production
Spermatogenesis
- begins during puberty and continues throughout life
What part of the reproductive system does the sperm formed?
Seminiferous Tubules
Spermatogonia
- a primitive stem cells found in the periphery of each tubule
Follicle-Stimulating Hormone
- a tropic hormone that targets the testes and stimulates sperm production
What type of stem cells produce after each division of a spermatogonium?
Type A daughter cells, Type B daughter cells
Type A cells
- remain at the tubule periphery to maintain the stem cell population
Type B cells
- gets pushed toward the tubule lumen, destined to become sperm cells
Primary Spermatocyte
- rises from type B cells, destined to undergo meiosis and form four sperm
Meiosis
- a special type of nuclear division that occurs only in the gonads
Spermatids
- the gametes in the spermatogenesis
Zygote
- when a sperm and an egg unite to form a fertilized egg
Spermiogenesis
- the last stage of sperm development where the excess cytoplasm of the spermatid is stripped aways and a tail is formed
What are the three regions of the fully formed sperm?
Head, Midpiece, Tail
Acrosome
- found anterior to the nucleus and is helmetlike, which is produced by the Golgi apparatus
Filaments
- form the long tail, arise from centrioles in the midpiece