Column I | Column II | ||
A. | Transfer of sperms into the female genital tract | P. | Fertilisation |
B. | Embryonic development | Q. | Insemination |
C. | Attachment of blastocyst to the uterine wall | R. | Gestation |
D. | Fusion of male and female gametes | S. | Implantation |
A | B | C | D | |
1. | P | Q | R | S |
2. | R | Q | S | p |
3. | Q | R | S | P |
4. | S | P | R | Q |
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 |
The number of testicular lobules in the testis is about:
1. | 50 | 2. | 150 |
3. | 200 | 4. | 250 |
Sperms are produced in:
1. | Rete testes | 2. | Epididymis |
3. | Seminiferous tubules | 4. | Vas deferens |
Each seminiferous tubule is lined by male germ cells called:
1. | Spermatogonia | 2. | Primary spermatocytes |
3. | Sertoli cells | 4. | Leydig cells |
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 |
A: | the primary source of testosterone or androgens in males |
B: | male germ cells in the inside lining of seminiferous tubules |
C: | spermatids released from seminiferous tubules |
D: | Present in the inside lining of seminiferous tubules, they nourish developing sperm cells |
1. | Only A, B, and C | 2. | Only A, B, and D |
3. | Only B, C, and D | 4. | A, B, C, and D |
The correct sequence of male sex accessory ducts beginning from testis would be:
1. | rete testis → vasa efferentia → epididymis → vas deferens |
2. | rete testis → vas deferens → vasa efferentia → epididymis |
3. | vas deferens → vasa efferentia → epididymis → rete testis |
4. | vasa efferentia → vasa deferens → epididymis → rete testis |
The ducts of the seminal vesicles open into:
1. | Ejaculatory duct | 2. | Rete testis |
3. | Urethra | 4. | Vas deferens |