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 |
| 1. | Length | about 4 to 5 cm |
| 2. | Width | about 2 to 3 cm |
| 3. | Lobes | three in right and two in left |
| 4. | Temperature | 2–2.5°C lower than the normal internal body temperature |
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 longest male sex accessory duct and stores sperms. |
| II: | B is the only gland that does not contribute significantly to the composition of the seminal plasma. |
| 1. | Only I is correct | 2. | Only II is correct |
| 3. | Both I and II are correct | 4. | Both I and II are incorrect |
| I: | secretions of seminal vesicles, prostate and bulbo-urethral glands. |
| II: | sperms |
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
| A | B | C | D | |
| 1. | Seminiferous tubule | Rete testes | Prostate | Bulbourethral gland |
| 2. | Rete testes | Vasa efferentia | Prostate | Bulbourethral gland |
| 3. | Rete testes | Vasa efferentia | Bulbourethral gland | Prostate |
| 4. | Seminiferous tubule | Rete testes | Bulbourethral gland | Prostate |
| 1. | The point of entry of urethra into the prostate gland |
| 2. | Opening of ejaculatory duct into urethra |
| 3. | External opening of the urethra |
| 4. | Muscles surrounding the urethra |