The Testis Flashcards
1
Q
What are the testis?
A
- two oval structures that are suspended outside the body in the scrotum
2
Q
Where are the testis in the embryonic stage?
A
- the testis are in the abdominal cavity just below the kidneys
3
Q
When do the testis descend into the scrotum?
A
- before birth
4
Q
What to the testis consist of?
A
- many compartments/lobules
- which contain highly convoluted tubules
5
Q
What are the highly convoluted tubules contained by the lobules in the testis called?
A
- the seminiferous tubules
6
Q
How long are the seminiferous tubules?
A
- they total about 250 metres in each testis
7
Q
What lines the tubules in the lobules of the testis?
A
- germinal epithelium
8
Q
What lies between the tubules in the lobules of the testis?
A
- groups of endocrine cells
9
Q
What are the endocrine cells that lie between the tubules in the lobules of the testis called?
A
- interstitial cells/cells of Leydig
10
Q
What do the testis produce?
A
- Sperm (male gametes) by the germinal layer
- Testosterone (a male hormone) by the interstitial cells
