Heart Structure and Function Test

Which of the following is the function of the cardiovascular system?

• a. regulating body temperature and fluid volume
• b. preventing infection
• c. transporting hormones and wastes
• d. all of these are functions of the cardiovascular system

The pericardium around the heart is responsible for

• a. opening and closing the heart valves
• c. reducing friction around the heart
• b. creating the heart beat
• d. bringing oxygen in from the lungs

The real work of the heart contractions is done by which layer?

• a. epicardium
• c. endocardium
• b. pericardium
• d. myocardium

The human cardiovascular system has two loops. Which loop takes blood from the heart to the body tissues and back?

• a. pulmonary loop
• c. systemic loop
• b. coronary loop
• d. systolic loop

Which type of blood vessel contains blood at the highest pressure?

• a. veins
• c. capillaries
• b. arteries
• d. shunts

Blood passes from the legs into the ____________ vena cava and then into the _____________.

• a. inferior, right atrium
• c. superior, right atrium
• b. inferior, left atrium
• d. superior, left atrium

The major blood vessel that carries oxygenated blood away from the heart is the

• a. vena cava.
• c. pulmonary artery.
• b. aorta.
• d. pulmonary vein.

Which of the following chambers of the heart are involved in the “ejection phase” of the cardiac cycle?

• a. right atrium and left atrium
• c. right atrium and right ventricle
• b. right ventricle and left ventricle
• d. left atrium and left ventricle

Which is the correct formula for calculating cardiac output?

• a. cardiac output = stroke volume + heart rate
• b. cardiac output = stroke volume – heart rate
• c. cardiac output = stroke volume x heart rate
• d. cardiac output = stroke volume/heart rate

Three tissue layers are found in:

• a. the arteries
• b. the veins
• c. the arteries and veins
• d. the capillaries