Cardiovascular System Quiz

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What is cardiac output, and how is it calculated?

The amount of blood pumped by the right ventricle, calculated by CO × HR
The amount of blood pumped by both ventricles, calculated by SV × CO
The amount of blood pumped by the atria, calculated by CO × SV
The amount of blood ejected by the left ventricle, calculated by HR × SV (correct)

What is the normal range for cardiac output?

4 to 8 L/min (correct)
2 to 4 L/min
8 to 12 L/min
6 to 10 L/min

What is the effect of a sustained rapid heart rate on diastolic filling and coronary artery perfusion?

Increased diastolic filling and coronary artery perfusion
Decreased diastolic filling and coronary artery perfusion (correct)
Increased diastolic filling and decreased coronary artery perfusion
No effect on diastolic filling and coronary artery perfusion

What is the term for the ability of the cardiovascular system to alter cardiac output in response to various situations?

Cardiac reserve (D) Signup and view all the answers

What happens to afterload when a patient is receiving a drug that decreases it?

It decreases (A) Signup and view all the answers

What is the term for the amount of blood ejected by the ventricles with each heartbeat?

Stroke volume (A) Signup and view all the answers

What is the primary function of arterioles?

To regulate blood pressure through vasodilation and vasoconstriction (C) Signup and view all the answers

What is the normal range for systolic blood pressure?

Less than 120 mm Hg (A) Signup and view all the answers

What is the effect of sympathetic stimulation on heart rate?

It increases heart rate (D) Signup and view all the answers

What is the function of baroreceptors in the regulation of blood pressure?

To sense stretch or pressure in the arterial system (A) Signup and view all the answers

What is the result of increased CO2 levels on the body?

It increases respiratory rate and blood pressure (A) Signup and view all the answers

What is the primary function of veins in the circulatory system?

To carry deoxygenated blood from the body to the heart (D) Signup and view all the answers

What is the equation that represents blood pressure?

BP = CO x SVR (A) Signup and view all the answers

What is the normal range for blood pressure?

Less than 80 mm Hg (A) Signup and view all the answers

What is the non-invasive technique used to measure blood pressure?

Sphygmomanometer and stethoscope (D) Signup and view all the answers

What is pulse pressure?

The difference between SBP and DBP (C) Signup and view all the answers

What is the formula to calculate mean arterial pressure?

MAP = (SBP + 2 DBP) / 3 (A) Signup and view all the answers

What is a normal pulse pressure?

About 1/3 of the SBP (B) Signup and view all the answers

What is a common age-related change in the heart?

Thickening and stiffening of the heart valves (C) Signup and view all the answers

What happens to systemic vascular resistance with age?

It increases (A) Signup and view all the answers

What is a purpose of measuring postural blood pressure?

To assess for orthostatic hypotension (A) Signup and view all the answers

What is a goal for mean arterial pressure?

MAP > 60 mm Hg (B) Signup and view all the answers

Cardiac Output

The amount of blood ejected by the left ventricle, calculated by HR × SV.

Normal Cardiac Output Range

4 to 8 L/min is the normal range for cardiac output.