Question 1

Which of the following best describes the primary function of the cardiovascular system?

Accepted Answer

To transport oxygen, nutrients, hormones, and waste products throughout the body

Question 2

Which of the following is an example of a connective tissue found in the cardiovascular system?

Accepted Answer

Blood

Question 3

Blood returning from the lungs enters which chamber of the heart?

Accepted Answer

Left atrium

Question 4

A patient is diagnosed with a defect in the chordae tendineae attached to the bicuspid (mitral) valve, causing them to be too long. What is the most likely consequence during left ventricular contraction?

Accepted Answer

Blood will be able to leak back into the left atrium

Question 5

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

Accepted Answer

Right ventricle → pulmonary trunk → lungs → left atrium

Question 6

Which structures are the serous membranes surrounding the heart?

Accepted Answer

Pericardium and visceral pericardium

Question 7

A newborn is diagnosed with transposition of the great vessels, where the aorta arises from the right ventricle and the pulmonary trunk from the left ventricle. What is the physiological consequence of this defect?

Accepted Answer

Deoxygenated blood would circulate to the body, and oxygenated blood would return to 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 to prevent valve prolapse during ventricular contraction

Question 9

Which of the following is the correct sequence of blood flow through the heart, starting from the vena cava?

Accepted Answer

Vena cava → right atrium → right ventricle → pulmonary trunk → lungs → left atrium → left ventricle → aorta

Question 10

Which type of cells conduct an electrical impulse through the myocardium of the heart wall?

Accepted Answer

Cardiac muscle cells

Question 11

The left ventricle has a thicker wall than the right ventricle because:

Accepted Answer

It pumps blood to the entire body (systemic circuit)

Question 12

Which of the following best describes the function of the semilunar valves?

Accepted Answer

They prevent backflow of blood into the ventricles after ventricular contraction

Question 13

A patient with mitral valve prolapse is at risk for which of the following complications?

Accepted Answer

Backflow of blood from the left ventricle into the left atrium

Question 14

Which of the following statements about the pericardium is correct?

Accepted Answer

It consists of a fibrous outer layer and a serous inner layer

Question 15

Which of the following best explains why the right side of the heart is called the 'pulmonary pump'?

Accepted Answer

It pumps deoxygenated blood to the lungs for oxygenation

Question 16

If the sinoatrial (SA) node fails to function, which structure can take over as the pacemaker of the heart?

Accepted Answer

Atrioventricular (AV) node

Question 17

Which of the following equations correctly represents cardiac output ($$CO$$)?

Accepted Answer

$$CO = HR 	imes SV$$

Question 18

Gap junctions in cardiac muscle cells are important because they:

Accepted Answer

Allow for rapid transmission of electrical impulses between cells

Question 19

Which of the following best describes the role of the atrioventricular (AV) valves during ventricular contraction?

Accepted Answer

They close to prevent backflow of blood into the atria

Question 20

A patient has a blockage in the pulmonary trunk. Which of the following would most likely occur as a result?

Accepted Answer

Decreased blood flow to the lungs

Cardiovascular System: Structure and Function Study Notes

Guida di studio - Domande di pratica

Study guide - Flashcard