Embrology

Question 1

What are the three main parts of a sperm’s tail?

Answer 1

Middle piece, Principal piece, End (flagellum)

The tail of a sperm is essential for its motility.

Question 2

What is contained in the head of a sperm?

Answer 2

Acrosome derived from Golgi apparatus

The acrosome helps in sperm penetration through the zona pellucida.

Question 3

What is the function of Fertilin-ßB?

Answer 3

A protein of the ADAM family present on sperm

It plays a role in sperm-egg interaction.

Question 4

At what speed do sperms move?

Answer 4

About 3 nm/minute

This speed is essential for reaching the egg for fertilization.

Question 5

What is the primary food source for sperm?

Answer 5

Fructose

Fructose provides energy for sperm motility.

Question 6

What is the length of mature sperm?

Answer 6

55 to 65 µm

This size is typical for mature spermatozoa.

Question 7

What is the chromosomal composition of a sperm with an X chromosome?

Answer 7

22 autosomes + X

This composition signifies a sperm that can contribute to female offspring.

Question 8

What is the chromosomal composition of a sperm with a Y chromosome?

Answer 8

22 autosomes + Y

This composition signifies a sperm that can contribute to male offspring.

Question 9

What stages are shown in the process of spermatogenesis?

Answer 9

Various stages of sperm development

Each stage corresponds to a specific phase in the maturation of spermatozoa.