Spermatogenesis Flashcards
1
Q
Spermatogonia
A
- Stem cells
- Divide by mitosis to produce two daughter cells.
- One daughter cell remains at that location as a spermatogonium
- The other cell differentiate into a primary spermatocyte
2
Q
Meiosis
A
A specialized form of cell division involved only in the production of gametes
3
Q
Primary spermatocytes
A
- Are the cells that begin meiosis
2. Give rise to secondary spermatocytes
4
Q
Secondary spermatocytes divide and differentiate into spermatids
A
Spermatids are immature gametes that differentiate into spermatozoa.
Spermatozoa enter fluid in the lumen.
5
Q
Nurse cells
A
Aka sustentacular cells
Or
Sertoli cells
Provide a microenvironment that supports spermatogenesis
6
Q
All stages of meiosis are seen in the
A
Seminiferous tubules
7
Q
The complete process takes — days. Involves – processes called?
A
64 3 Mitosis Meiosis Spermiogenesis
8
Q
Mitosis
A
- Spermatogonia are stem cells that undergo division
- One daughter cell remains in place
- Other cell becomes primary spermatocyte
9
Q
Meiosis
A
- Cell division involving gamete production.
- Human gametes have 23 chromosomes
- Produces spermatids- the undifferentiated male gametes
10
Q
Spermatogenesis
A
Spermatids become physically mature spermatozoa- highly specialized cells