Male sex gamete is called “Sperm”.
It is haploid i.e. contains one set of chromosomes 23 chromosomes.
The process of formation of sperms is called “Spermatogenesis”.
Spermatogenesis takes place in seminiferous tubules of the testes.
Around 300 Million sperms are produced every day in an adult male.
They are stored and get matured in epididymis and are pushed in vas deferens during ejaculation.
They can survive upto 2 days in the female reproductive tract.
Length of a typical human sperm is about 70 µm.
Structurally they consist of following parts,
Head.
Neck.
Mid piece (Body).
Tail.
Head:
It is 4-5 µm long.
It contains Acrosome, a specialized lysosome in vesicles and Nucleus.
It also contains an enzyme necessary for fusion of nucleus with that of ovum after penetration.
Neck:
It's a smaller part and contains “Centriole”.
Mid piece (Body):
The body contains many mitochondria which generate ATPs required for sperm movement.
Tail:
It is a modified cilium that facilitates sperm movements.
Commonly Asked Question.
Write a short note on Human Sperm.
Draw a well labelled diagram of Human Sperm.