Question 1

Which heart chamber receives deoxygenated blood from the body via the superior and inferior vena cava?

Accepted Answer

Right Atrium

Question 2

Blood flows from the right ventricle into which vessel, and what is the primary function of this vessel?

Accepted Answer

Main pulmonary artery; carries deoxygenated blood to the lungs

Question 3

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

Accepted Answer

Tricuspid valve

Question 4

If the chordae tendineae are damaged, which of the following is most likely to occur?

Accepted Answer

Blood will flow backward from the ventricles to the atria during ventricular contraction

Question 5

Which structure separates the left and right ventricles and is essential for coordinated contraction?

Accepted Answer

Interventricular septum

Question 6

During the cardiac cycle, which valve opens to allow blood to flow from the left atrium to the left ventricle?

Accepted Answer

Mitral (bicuspid) valve

Question 7

A patient has a blockage in the main pulmonary artery. Which physiological consequence is most likely?

Accepted Answer

Reduced oxygenation of blood in the lungs

Question 8

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

Accepted Answer

They anchor the chordae tendineae, preventing valve prolapse during ventricular contraction

Question 9

If the aortic valve fails to close properly, which of the following will most likely occur?

Accepted Answer

Blood will regurgitate from the aorta into the left ventricle

Question 10

Which equation best represents the cardiac output ($$CO) of $$the heart?

Accepted Answer

$$CO = HR 	imes SV$$

Question 11

A patient with a defect in the fossa ovalis may experience abnormal blood flow between which two chambers?

Accepted Answer

Right atrium and left atrium

Question 12

Which vessel carries oxygenated blood from the lungs to the heart?

Accepted Answer

Pulmonary vein

Question 13

Which of the following is the correct sequence of blood flow through the heart starting from the right atrium?

Accepted Answer

Right atrium → Right ventricle → Pulmonary artery → Lungs → Left atrium → Left ventricle → Aorta

Question 14

Which structure is responsible for preventing the backflow of blood from the pulmonary artery into the right ventricle?

Accepted Answer

Pulmonary valve

Question 15

A patient with mitral valve stenosis will have impaired blood flow between which two heart chambers?

Accepted Answer

Left atrium and left ventricle

Question 16

Which anatomical feature of the ventricles increases the force of contraction by providing a rough surface for muscle attachment?

Accepted Answer

Trabeculae carneae

Question 17

If a patient has a congenital defect causing the interventricular septum to be incomplete, what is the most likely consequence?

Accepted Answer

Mixing of oxygenated and deoxygenated blood between the ventricles

Question 18

Which of the following best describes the role of the aorta in systemic circulation?

Accepted Answer

It carries oxygenated blood from the left ventricle to the body

Question 19

Which formula correctly calculates stroke volume ($$SV) $$given end-diastolic volume ($$EDV) $$and end-systolic volume ($$ESV$$)?

Accepted Answer

$$SV = EDV - ESV$$

Question 20

A patient with a blockage in the superior vena cava will have impaired blood return from which part of the body?

Accepted Answer

Upper body (head, neck, arms)

Anatomy of the Human Heart: Structure and Function

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