In males, reproductive cells are called spermatozoa.

_________ anemia is the result of excessive blood loss either from wounds or internal bleeding.

Which condition is caused by a viral infection?

The chemical substances manufactured by the endocrine glands are known as _________.

A bolus is a soft ball of food created by the action of the teeth, tongue, and saliva.

__________ coordinate immune defenses and kill organisms in cells on contact.

__________ coordinate immune defenses and kill organisms in cells on contact.

Sperm cells are produced in the _________.

Which hormone causes the uterus to contract during and after childbirth?

Which hormone causes the uterus to contract during and after childbirth?