Where does deoxygenated blood returning from the body first enter the heart?

• right ventricle
• left atrium
• left ventricle
• right atrium

right atrium

Which heart chamber is the most muscular?

• left ventricle
• right atrium
• right ventricle
• left atrium

left ventricle

Which artery is the only one that carries deoxygenated blood?

• pulmonary artery
• femoral artery
• aorta
• carotid artery

pulmonary artery

The largest artery in the human body is the:

• carotid artery
• femoral artery
• pulmonary artery
• aorta

aorta

What is the primary function of the spleen?

• produces digestive enzymes
• is a organ of the reproductive system
• filters blood and removes old/damaged blood cells
• nothing really - it is vestigial with no known function

filters blood and removes old/damaged blood cells

What is the major function of the pancreas?

• makes digestive enzymes
• is part of the endocrine system
• is part of the reproductive system
• choices 1 and 2 above

choices 1 and 2 above

One function of the epididymis is to store sperm cells.

• True
• False

True

In the female rat, all embryos develop in uterine horns.

• True
• False

True

The small intestine is shorter in length than the large intestine.

• True
• False

False

The "whiskers" found on the rat's face are called:

• cilia
• vibrissae
• axillae
• pelage

vibrissae