Q: If a patient has a heart rate ($$HR) of 80 $$beats per minute and a stroke volume ($$SV) of 70 mL$$, what is their cardiac output ($$CO) in $$liters per minute?

$$CO = 80 \times 70 = 5600 mL/$$min = $$5.6 L/$$min

Question 1

Which structure forms the outermost layer of the heart wall and is also known as the visceral pericardium?

Accepted Answer

Epicardium

Question 2

A patient presents with chest pain radiating to the left arm. An ECG shows ST elevation and blood tests reveal elevated troponin levels. Which condition is most likely?

Accepted Answer

Myocardial infarction

Question 3

Which heart chamber receives oxygenated blood from the pulmonary veins?

Accepted Answer

Left atrium

Question 4

The cardiac skeleton (annulus fibrosus) serves which primary function?

Accepted Answer

Provides structural support and attachment for heart valves

Question 5

Which valve prevents backflow of blood from the right ventricle into the right atrium?

Accepted Answer

Tricuspid valve

Question 6

During ventricular contraction, which valves are open and which are closed?

Accepted Answer

AV valves closed, semilunar valves open

Question 7

Which vessel carries deoxygenated blood from the body to the right atrium?

Accepted Answer

Superior vena cava

Question 8

The apex of the heart is typically located at which intercostal space along the midclavicular line?

Accepted Answer

Fifth intercostal space

Question 9

Which coronary artery supplies the anterior interventricular septum and the anterior walls of both ventricles?

Accepted Answer

Left anterior descending (LAD) artery

Question 10

A blockage in the right coronary artery would most likely affect which region of the heart?

Accepted Answer

Posterior wall of the right ventricle

Question 11

Which structure anchors the atrioventricular (AV) valves to the papillary muscles?

Accepted Answer

Chordae tendineae

Question 12

Which of the following best describes the flow of blood through the heart and lungs?

Accepted Answer

Right atrium → right ventricle → pulmonary trunk → lungs → left atrium

Question 13

Which vein collects most of the venous blood from the myocardium and drains into the right atrium?

Accepted Answer

Coronary sinus

Question 14

A patient with coronary artery disease (CAD) is at risk for which life-threatening event due to reduced blood flow to the myocardium?

Accepted Answer

Myocardial infarction

Question 15

Which of the following is the correct formula for cardiac output ($$CO$$)?

Accepted Answer

$$CO = HR 	imes SV$$

Question 16

If a patient has a heart rate ($$HR) of 80 $$beats per minute and a stroke volume ($$SV) of 70 mL$$, what is their cardiac output ($$CO) in $$liters per minute?

Accepted Answer

$$CO = 80 	imes 70 = 5600 mL/$$min = $$5.6 L/$$min

Question 17

Which of the following best describes the function of the papillary muscles in the heart?

Accepted Answer

They prevent prolapse of the AV valves during ventricular contraction

Question 18

Which anatomical landmark is used to locate the point of maximal impulse (PMI) of the heart during a physical exam?

Accepted Answer

Fifth intercostal space at the midclavicular line

Question 19

Which of the following is NOT a function of the pericardium?

Accepted Answer

Generating electrical impulses for contraction

Anatomy of the Human Heart: Structure, Location, and Major Vessels

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