Question

Give the full structure of humen male gamete (sperm cell)

Answer 1

Explanation:

The sperm cells are the haploid gametes which are produced in the male. There are different parts of the sperm cell.

(a) Acrosome: This structure contains enzymes used for penetrating the female egg.

(b) Nucleus: There is the genetic material which is a haploid genome because it contains only one copy of each chromosome.

(c) Middle piece: The middle piece has a central filamentous core with many mitochondria spiralled around it which is used for ATP production for the journey through the female cervix, uterus and uterine tube.

(d) Tail: There is a long tail which is used for swimming and reaching near the egg. !

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Answer 2

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Structure of sperm :

Structure of sperm:

Sperm is the male gamete. It is a motile,

microscopic elongated cell. It is divisible into

three parts- head, middle piece and tail.

contains hydrolytic enzymes; hyaluronidase

and proteolytic enzymes like zona lysins and

corona penetrating enzymes.

Neck: It is a very short region having two

centrioles i.e. proximal centriole and distal

centriole.

Middle piece: It has an axial filament

surrounded by 10-14 spiral turns of

mitochondria (nebenkern). It produces energy

necessary for the movement of sperm.

Tail: It is a long, slender and tapering part

containing cytoplasm and fine thread- axial

filament. The axial filament arises from the

distal centriole and travels through out the

length of tail. It is partly surrounded by plasma

membrane (main piece). The part without

plasma membrane is called end piece.

It is process of formation of the haploid

female gamete i.e. egg or ovum from the diploid

germinal epithelium. It involves the process of

meiosis (and mitosis). Like spermatogenesis,

oogenesis process can be divided into three

stages :

I. Multiplication phase

II. Growth phase

III. Maturation phase

Head: The sperm head is oval in shape and

contains haploid nucleus. Above the nucleus,

there is a cap like structure called acrosome.

It is formed from the golgi body.

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