Spermatogenesis a. Where in the body is this occurring? b. When does it begin an

Question

Spermatogenesis a. Where in the body is this occurring? b. When does it begin and end in life? c. How often does it occur in a year? d. Outline events of spermatogenesis. e. list all the cell names and chromosome number (haploid/diploid) of each cell. f. Know when mitosis, meiosis I, and meiosis II is happening during spematogensis g. How many gametes produced, how many functional gametes? h. What is the stimulus (i.e. hormone) for spermatogenesis? How can there be decreased sperm production with no change in testosterone pr Describe the process of spermiogenesis. a. Where is it occurring in the body? b. What is the beginning and ending cell? c. Function? List the three parts of a sperm, and state the function of each section. Hormonal regulation of testicular function. a. Where is GnRH, LH, FSH, Testosterone Inhibin hormones produced and secreted from b. What is the role of GnRH, LH, FSH, Testosterone, Inhibin in the male body? c. How do the hormones interact (i.e. positive/negative feedback)? Describe the male secondary sex characteristics. What hormone is responsible for the secondary characteristics? Female Functional Anatomy

Explanation / Answer

Q 15.

A. Spermatogenesis occurs in the seminiferous tubules of the testes

B. Spermatogenesis begins at puberty and usually continues till death

c. Spermatogenesis occurs at all the time starting from puberty till death

d. Spermatogenesis involves the production of 4 haploid sperm cells from a single diploid spermatogonium by the process of Meiosis.

e. Cell names and chromosome number

f. Mitosis occurs in the Spermatogonia to increase cell number before Meiosis. Meiosis I occurs during the formation of secondary spermatocyte from the primary spermatocyte. Meiosis II is responsible for the formation of haploid spermatids from the secondary spermatocyte.

g. 4 sperm cells are produced from 1 spermatogonia. All the gametes are functional in spermatogenesis

h. Follicle stimulating hormone and Testosterone

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