Spermatogenesis, Biology

SPERMATOGENESIS

  1. The process of maturation of reproductive cells in the testes of male to form spermatozoa (sperm) is known as spermatogenesis.
  2. The testes are formed of numerous tubular seminiferous tubules, held together in mesocharium connective tissue.
  3. Each seminiferous tubule shows an orderly arrangement of cells undergoing different phases of maturation.
  4. The peripheral layer of cells next to the basement membrane is formed of spermatogonia or the sperm mother cells and is often described as germinal epthelium.
  5. The spermatogonia undergo spermatogenesis to produce sperm.
  6. In between the groups of spermatogonia are tall columnar cells the sertoli cells.
  7. The spermatids undergoning differentiation into psermatonourishment to the developing sperm.
  8. Interspersed in the connective tissue is between the seminiferous tubules are present groups of interstitial cells or leyding cells which secrete male hormone (Testosteron).
  9. In vertebrate sperm production hologonic type (towards the central cavity).
  10. In insect sperm production is telogonic type (towards periphery).

1915_testis.png

 

T.S. of Testis

1014_seminiferous tubule.png

T. S. of Seminiferous tubules

Posted Date: 10/3/2012 7:23:59 AM | Location : United States







Related Discussions:- Spermatogenesis, Assignment Help, Ask Question on Spermatogenesis, Get Answer, Expert's Help, Spermatogenesis Discussions

Write discussion on Spermatogenesis
Your posts are moderated
Related Questions
Q. What are the bacteria? Bacteria are unicellular and prokaryotic beings. Bacteria have simple organization they present an exterior cell wall, plasma membrane, circular DNA w

Q. How does the female gamete move from the ovary to the uterus? The female gamete released from the ovary falls into the surrounding abdominal cavity and is collected by the F

LARYN X - Study of larynx is known as Laryngeology. In man it is more prominent than woman known as Adam's apple. It is sound producing organ. At its base trachea presen

Q. Treatment of congestive cardiac failure? A judicious and careful co-ordination between oxygen support, drug therapy and nutrient intake can help in alleviating majority of t

A cell with a euploid number of chromosomes contains: A.one half of a complete set of chromosomes B.several complete sets of chromosomes C.the correct number of chromosomes D.two c

Q. Calculate ideal weight for a diabetic patient? We now know that diabetes is the outcome of many genetic and environmental factors. The former is not in our control but the l

Based on your understanding of the nitrate reductase and nitrite reductase tests, why would the inclusion of nitrite inhibit anaerobic growth?

Explain the Toxicity of Vitamin D? The adverse effects of high vitamin D intakes include hypercalciuria (excessive urinary calcium excretion) and hypercalcaemia (high concentr

Which two structures does the trachea lead to in the lungs?

Which of the following serves as an actuating signal, or as part of an actuating signal, in a negative feedback system? A. Action potentials in diaphragm skeletal muscle fibers