Gametogenesis Flashcards
1
Q
Gametogenesis
A
Process of production of gametes
2
Q
Spermatogonia
A
Immature male germ cell
3
Q
Spermatogenesis
A
Spermatogonia produces sperms
4
Q
Location of Spermato
A
Present on inside wall of seminiferous tubules
5
Q
How does spermatogonia multiply
A
Mitotic division -increase in number
6
Q
Ploidy of spermatogonia
A
Diploid-46 chromosomes
7
Q
Primary spermatocytes
A
- Undergoes Meiosis 1
- Forms two equal haploid cells
- Each are secondary spermatocyte
- 23 chromosomes each
8
Q
Secondary spermatocyte
A
- Undergoes Meiosis 2
- Forms four equal haploid cells -spermatids
9
Q
Spermiogenesis
A
Transformation of spermatids into spermatozoa
10
Q
Spermiation
A
Sperm heads become embedded in sertolli cells-finally released from seminiferous tubule by spermiation.
11
Q
GnRH
A
Gonadotrophin releasing hormone
- hypoyhalamic hormone
- acts in anerior pitutary
- Stimulates secretion of LH and FSH
12
Q
LH
A
- Acts on leydig cells
- Stimulates synthesis and sectretion of androgens
- Androgens stimulate process of spermatogenesis
13
Q
FSH
A
- Acts on sertolli cells
- Stimulates secretion of some factors
