Question

Which among the following describe the sperm production in adult males?
A. Continuous
B. Periodical
C. Just before ejaculation
D. Once

Answer 1

Hint: In human male, the testes are the sperm producing organs. The testes are covered by a layer known as tunica albuginea. The process of sperm production takes place from the germ cells, which are cells present in the seminiferous tubules. The sperms are also known as the spermatozoa.

Complete answer:
> Sperm is the male reproductive cell or gamete. Animals and humans produce motile sperm with a flagellum bearing tail and are known as spermatozoa. The mammalian sperm is divided into two parts which is the head and the tail of the sperm. The head of the sperm contains the nucleus and coiled chromatin fibres. The chromatin fibres are coiled densely. The chromatin fibres are surrounded by a thin, flattened sac-like structure called the acrosome. The main function of acrosome is the production of enzymes to penetrate the female ovum. The tail of the sperm contains a flagellum and is capable of movement and helps the sperm to reach the egg.

> The process of production of sperm in male is known as spermatogenesis. In this process, production of sperm takes place by the production of several successive sperm cell precursors. From the lining of the seminiferous tubules, the germ cells arise which by repeated division produces spermatogonial stem cells. These cells differentiate into primary spermatocytes. The spermatocytes divide meiotically through reduction division into secondary spermatocytes. The secondary spermatocytes divide into two equal haploid cells known as spermatids. The spermatids then mature into sperm or spermatozoa through the process of spermiogenesis.

> The process of spermatogenesis is highly dependent upon optimal conditions and is necessary for sexual reproduction. The complete process of spermatogenesis is a continuous process and sperms are produced on a daily basis. However, it takes about sixty four days for the sperms to mature. On a daily basis, the testicles produce about several million sperms per day.

> The maturation process of sperm continues as they move towards the seminiferous tubules. From the seminiferous tubules, they move to the epididymis, which is a slender appendage and situated outside the testicle. The sperm is then moved up to the scrotum through the groin and ultimately it moves into the prostate gland.

The prostate gland and the seminal vesicle produces a fluid released during ejaculation and it carries the sperms.

Hence, The correct answer is option (A).

Note: Sperms in male are produced through the process of spermatogenesis. During this process, the germ cells through a variety of divisional steps produce sperms. However, the sperms are not mature and they require about nearly seventy days to mature. The process of sperm production is a continuous process and is produced nearly daily.