The cells of all living things are composed of a substance called:

Mitosis occurs when:

The process of building up larger molecules from smaller ones is called:

Which type of tissue binds together, protects, and supports the various parts of the body?

Which system purifies the body by eliminating waste matter?

The human skeleton eventually has this number of bones after some have been fused together.

About one-third of bone is organic matter, and the other two-thirds are primarily composed of:

The phalanges are the bones of the:

How many muscles are there in the human body?

Which of the following is not one of the three parts of a muscle?

The _____________ are the muscles that separate the fingers.

The scientific study of the structure, function, and pathology of the nervous system is known as:

The principal components of the nervous system include all but which of the following?

Which type of nerves carry impulses from the sense organs to the brain?

What is the primary function of lymph?

About how much does a human heart weigh?

The chambers of the heart include:

When oxygen-rich blood returns to the heart, it enters the:

Blood comprises about ______________ of the body's total weight.

What color is blood in the arteries?

What are leukocytes?

Platelets are:

Blood helps to equalize the body's temperature; seals links found in injured blood vessels; carries water, oxygen, and food to all cells; carries away carbon dioxide and other waste products; and __________

What is the most complex organ of the endocrine system?

The organ that eliminates waste containing perspiration is the: