For each aspect of spermatogenesis and the seminal ejaculate A–E, select the most appropriate option from the following list of components of the male reproductive system.
1. Leydig cells.
2. Sertoli cells.
3. Seminiferous tubules.
5. Seminal vesicles.
6. Prostate gland.
7. Vas deferens.
A. At their site of formation, the spermatozoa acquire the haploid number of chromosomes.
B. Testosterone, which is essential for normal spermatogenesis, is produced by cells stimulated by follicle-stimulating hormone.
C. Spermatozoa are stored for some 2–4 weeks, while their motility and ability to fertilize steadily increase.
D. Most of the volume of the seminal ejaculate consists of a slightly alkaline fluid rich in fructose.
E. The spermatozoa in the seminal ejaculate leave the scrotum because of powerful contraction of smooth muscle cells.