12 Questions
What is the name of the cells that produce specialized sperm in the seminiferous tubules of the testes?
Germ cells
How long does it take for spermatogenesis to develop from spermatogonium to mature sperm?
64 days
What happens after mitotic division of spermatogonia?
One daughter cell remains undifferentiated while the other forms sperm
What are primary spermatocytes?
Germ cells that have undergone mitotic division and are in a resting phase before the first meiotic division
What is the name of the process by which spermatogonia proliferate?
Mitosis
How many daughter cells are produced after mitotic division of spermatogonia?
Two
What is the name of the cells that support the development of germ cells into spermatozoa?
Sertoli cells
What is the ploidy of spermatozoa?
Haploid
What is the name of the process by which spermatocytes divide to produce spermatids?
Meiosis
How many sperm may reach maturity daily?
Up to several hundred million
What is the name of the stage in which different stages of sperm development can be observed in the layers of germ cells?
Spermatogenesis
What is the name of the cells that produce testosterone in the testes?
Leydig cells
Study Notes
- Spermatogenesis produces specialized, mobile sperm in the seminiferous tubules of the testes.
- Two important cell types are present: germ cells and Sertoli cells.
- Germ cells proliferate and develop into specialized, haploid spermatozoa.
- Different stages of sperm development can be observed in the layers of germ cells.
- Spermatogenesis takes 64 days for development from spermatogonium to mature sperm.
- Mitotic proliferation of spermatogonia provides a continual supply of new germ cells.
- After mitotic division, one daughter cell remains undifferentiated while the other forms sperm.
- Primary spermatocytes are formed through mitotic division and enter a resting phase before the first meiotic division.
- Meiosis and packaging are also important stages of spermatogenesis.
- Up to several hundred million sperm may reach maturity daily.
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