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Structure and Function of the Heart Quiz

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Questions and Answers

Which valve separates the left atrium from the left ventricle?

Aortic valve
Mitral valve (correct)
Tricuspid valve
Pulmonary valve

What is the function of the sinoatrial (SA) node?

It acts as the pacemaker of the heart (correct)
It pumps blood out of the heart
It regulates the contraction of the ventricles
It controls the opening and closing of the atrioventricular valves

Which neurotransmitter slows down the heart rate?

Norepinephrine
Acetylcholine (correct)
Epinephrine
Dopamine

What is the purpose of an electrocardiogram (ECG)?

To record the electrical activity of the heart (B) Signup and view all the answers

Which type of lipoprotein carries cholesterol away from the arteries, reducing the risk of heart disease?

High-density lipoprotein (HDL) (B) Signup and view all the answers

What is the primary symptom of peripheral arterial disease?

Intermittent claudication (pain with walking) (A) Signup and view all the answers

What is the difference between a fusiform and a saccular aortic aneurysm?

A fusiform aneurysm is uniform in shape, while a saccular aneurysm is an out-pouching (C) Signup and view all the answers

What is the primary cause of arteriosclerosis?

Atherosclerosis (D) Signup and view all the answers

What is the normal range for systolic blood pressure in adults?

120-140 mmHg (C) Signup and view all the answers

What is the term used to describe the contraction phase of the heart chambers?

Systole (C) Signup and view all the answers

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