The testes are situated outside the abdominal cavity within a pouch called the scrotum. This is necessary as:
1. | The scrotum can contain lengthy ducts for the transfer of sperms |
2. | Scrotum helps in maintaining the low temperature of the testes necessary for spermatogenesis |
3. | Scrotum reduces the pressure around the testes necessary for spermatogenesis |
4. | Scrotum can store huge amounts of sperms |
A: | I contributes acidic fluid to the seminal plasma. |
B: | II is an unpaired gland. |
C: | III stores sperms. |
1. | Only B | 2. | Only A and C |
3. | Only C | 4. | A, B, and C |
Sperms are produced in:
1. | Rete testes | 2. | Epididymis |
3. | Seminiferous tubules | 4. | Vas deferens |
Leydig cells:
1. | Are present in seminiferous tubules and secrete androgens |
2. | Are present in seminiferous tubules and help in the maturation of sperms |
3. | Are present in interstitial space and secrete androgens |
4. | Are present in interstitial space and help in the maturation of sperms |
I: | A is the duct that ascends from the scrotum into the lower abdomen. |
II: | B is the part where the sperms are stored and get mature. |
III: | C leaves the testes. |
IV: | D carries sperm from the seminiferous tubules to C. |
Spematogenesis begins:
1. | Before birth | 2. | Just before birth |
3. | Just after birth | 4. | At puberty |