Cardiac 2 quiz

Explain why veins have valves while arteries do not, based on their structure and function.

• Veins have higher pressure and need valves to prevent backflow

• Veins carry blood away from the heart and need valves for direction

• Veins have lower pressure and need valves to prevent backflow

• Arteries have valves to regulate blood flow

What does the pulmonary semilunar valve separate?

• Right atrium and right ventricle

• Right ventricle and pulmonary trunk

• Left atrium and left ventricle

• Left ventricle and aorta

The aortic semilunar valve separates which two structures?

• Right atrium and right ventricle

• Right ventricle and pulmonary trunk

• Left atrium and left ventricle

• Left ventricle and aorta

In systemic circulation, through which vessel does blood leave the heart to supply the body?

• Pulmonary artery

• Portal vein

• Aorta

• Hepatic vein

Explain why the right ventricle does not need to generate as much force as the left ventricle.

• Because it pumps blood to the entire body

• Because pulmonary circulation is low-pressure

• Because it receives oxygenated blood

• Because it has thicker walls

What is the primary function of the left atrium in the heart?

• To pump deoxygenated blood to the lungs

• To receive oxygenated blood from the lungs and send it to the left ventricle

• To deliver oxygenated blood to the body directly

• To receive deoxygenated blood from the body

Which chamber of the heart is the largest and has thick walls?

• Right atrium

• Left ventricle

• Right ventricle

• Left atrium

What is the primary function of the left ventricle?

• Pumps deoxygenated blood to the lungs

• Pumps oxygenated blood to the body through the aortic valve

• Receives oxygenated blood from the lungs

• Pumps blood to the right atrium

Describe the pathway of blood flow starting from the right atrium and ending at the aorta.

• Right atrium → Tricuspid valve → Right ventricle → Pulmonary artery → Lungs → Pulmonary vein → Left atrium → Mitral valve → Left ventricle → Aorta

• Right atrium → Mitral valve → Right ventricle → Pulmonary vein → Lungs → Pulmonary artery → Left atrium → Tricuspid valve → Left ventricle → Aorta

• Right atrium → Pulmonary vein → Right ventricle → Tricuspid valve → Lungs → Pulmonary artery → Left atrium → Mitral valve → Left ventricle → Aorta

• Right atrium → Aortic valve → Right ventricle → Pulmonary artery → Lungs → Pulmonary vein → Left atrium → Tricuspid valve → Left ventricle → Aorta

Explain why the blood entering the heart chambers does not supply the myocardium, and identify which vessels serve this function.

• The myocardium is supplied by coronary arteries, not by blood entering the chambers

• The myocardium is supplied by the pulmonary vein

• The myocardium is supplied by the hepatic portal vein

• The myocardium is supplied by the aorta directly