Urinalysis and Body Fluids 6th Edition by Majorie DiLorenzo, Susan Strasinger

Exercise 40

The purpose of the acrosomal cap is to:

A. Penetrate the ovum

B. Protect the the nucleus

C. Create energy for tail movement

D. Protect the neckpiece

Step 1 of 2

Acrosomal cap:

The acrosomal cap is also called “acrosome” or “head cap”; which is present at the tip of a sperm’s head.

• Generally, the shape of a normal sperm’s head is oval which is 5 micrometer long and 3 micrometer wide.

o The acrosomal cap covers half of the head and the two thirds of nucleus in the sperm.

o The acrosomal cap contains enzymes which helps a sperm to enter into an ovum.

Therefore, the purpose of acrosomal cap in a sperm is to “penetrate the ovum”. Hence, the correct answer is option .