The innermost layer of blood vessel walls made up of one layer of endothelium and in direct contact with the blood is:

1. tunica adventitia	2. tunica intima
3. tunica media	4. tunica muscularis

The build-up of fats, cholesterol and other substances in and on the artery walls is known as:

The semilunar valves will open during a normal cardiac cycle when the pressure in the left ventricle is
1. greater than the pressure in the aorta.
2. less than the pressure in the aorta.
3. the same as the pressure in the aorat.
4. less than the pressure in the left atrium.

Cardiac output is defined as
1. blood pressure X stroke volume.
2. peripheral resistance X heart rate.
3. heart rate X stroke volume.
4. Systolic pressure – diastolic pressure.

The location of the human heart is most accurately described as:

The right ventricle of the heart pumps blood into the:

What separates the atria from the ventricles so that the atrial impulse does not spill onto the ventricles?

If the atrioventricular node is damaged:
1. SA node would not develop action potential
2. atria will fail to contract
3. the impulse will not reach AV node
4. the impulse will not reach ventricles

Which of these statements about the ABO blood group is NOT true?

A person has a complete blood count done. Which of the following would not be normal?
1. total RBC count - 5.0 million /µL
2. total WBC count – 1500 /µL
3. total platelet count - 225,000 /µL
4. hemoglobin – 14.5 g / 100 ml