Which of the following structures contains enzymes that help a sperm to penetrate the cell membrane of an ovum?

a. Head
b. Acrosome
c. Neck
d. Tail


Ans: b. Acrosome

Anatomy & Physiology

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Constrict means to close

Indicate whether the statement is true or false

Anatomy & Physiology

A class-2 MHC molecule is used to present a foreign antigen to ________.

A. cytotoxic T cells B. regulatory T cells C. B lymphocyte D. helper T cells

Anatomy & Physiology

In order to return acidic blood pH to normal, breathing becomes deeper and more rapid, a phenomenon known as ________

A) hypoventilation B) hyperventilation C) apnea D) dyspnea

Anatomy & Physiology

Gliding is an example of an angular motion.

Answer the following statement true (T) or false (F)

Anatomy & Physiology