Cardiac Physiology

What is the correct path through the circulatory system which describes the passage of a blood clot originating in the left leg?

• Vena cava → left atrium → left ventricle → lungs → right atrium → right ventricle → aorta

• Vena cava → right atrium → right ventricle → lungs → left atrium → left ventricle → aorta

• Vena cava → left atrium → right atrium → lungs → left ventricle → right ventricle → aorta

• Vena cava → right atrium → left atrium → lungs → right ventricle → left ventricle → aorta

What divides the left side of the heart from the left side?

• Atrium

• Ventricles

• Wall

• Septum

At the instant following the second heart sound, which heart valves are open?

• Both atrioventricular valves and semilunar valves

• Atrioventricular valves only

• All valves are closed

• Semilunar valves only

What physical feature of large systemic arteries (resistance vessels) makes them relatively more responsive to changes in intracellular calcium concentrations?

• Thick tunica media

• Absent tunica media

• Thick tunica intima

• Absent tunica intima

Rank the following blood vessels in order of their average pressure, from highest to lowest: artery, vein, arteriole, venule, aorta, capillary.

• Capillary > arteriole > venule > artery > vein > aorta

• Capillary > vein > venule > arteriole > artery > aorta

• Aorta > arteriole > venule > artery > vein > capillary

• Aorta > artery > arteriole > capillary > venule > vein

What vessels carry deoxygenated blood away from the heart?

• Neither coronary arteries or pulmonary artery

• Pulmonary artery only

• Both coronary arteries and pulmonary artery

• Coronary arteries only

How can the circulatory system promote heat retention/conservation, such as on a cold day?

• Vasoconstriction

• Vasodilation

• Decreasing tunica media contraction

• Increasing capillary surface area

Tags

NGSS.HS-LS1-3

A tiny blood vessel that allows for exchange between the blood and cells in the tissues in the body is called a

• Blood vessel

• Vein

• Capillary

• Artery

How many chambers does the human heart have?

• 4

• 2

• 3

• 5

The atriums are located below the ventricles?

• TRUE

• FALSE