What is the advantage of the descent of testes in humans from the lower abdomen to the scrotum?
1. | Better thermo-regulation leading to effective spermatogenesis |
2. | Ease of transport of the sperms to the urethra |
3. | More storage space for sperms |
4. | A decrease in the risk of prostatic hypertrophy |
Column I | Column II | ||
1 | Seminiferous tubules | A | Site where sperm is stored and matured |
2 | Epididymis | B | Produces a fluid that is part of the semen |
3 | Prostate gland | C | Site of development of the fetus |
4 | Uterus | D | Site of sperm production |
I: | synthesise and secrete testicular hormones called androgens |
II: | are located in regions outside the seminiferous tubules |
After leaving the testes, spermatozoa pass sequentially through the :
1. | seminiferous tubule, rete testis, efferent ductule, and epididymis |
2. | epididymis, ductus deferens, seminal vesicle, and ejaculatory duct |
3. | membranous urethra, prostatic urethra, and spongy urethra |
4. | epididymis, ductus deferens, ejaculatory duct, and urethra |