Name: Male Reproductive Anatomy
Uploaded: 2019-07-19
Duration: 17 min 6 s
Description: Watch this video to learn about the anatomy of the male reproductive system and the components of the ejaculatory pathway and glands that generate semen.

Question

Compare the structure of mature mammalian sperm and ovum.

Accepted Answer

Sperm:

It is the male gamete, which is a long, motile, flagellated cell and is differentiated into head, neck, middle piece, and tail, though they are comparatively smaller in size.

Mitochondria form a spiral and are compactly arranged in the middle piece in the sperm.

Cytoplasm is present in a small amount

The nucleus is condensed with no nucleoplasm and contains X or Y chromosomes in Sperms along with centrioles.

Sperms are produced in the testes, where four sperms are formed from one spermatogonium.

Sperms are differentiated into head, neck, middle piece, and tail, and is surrounded by the plasma membrane.

Ovum:

Ovum is the female gamete, where the cells are rounded spheres and non-motile, though not differentiated into different parts, and the cells are larger in comparison to the sperm cell.
In the ovum, mitochondria are scattered in the cytoplasm

The cytoplasm is very less compared to sperm.
Ovum contains a nucleoplasm called a germinal vesicle and contains only the X chromosome; centrioles are absent.
Ovum is produced in ovaries, and only one ovum is formed from one oogonium.
Ovum is not externally differentiated into various parts and is surrounded by egg envelopes.

Compare the structure of mature mammalian sperm and ovum.

Important Questions on Human Reproduction

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