Chapter : UNKNOWN

Question 1

What is a primary way to prevent heart disease?

Answer 1

Don’t smoke or use tobacco

Smoking is a major risk factor for heart disease.

Question 2

How long should you exercise each day to promote heart health?

Answer 2

30 minutes a day

Regular physical activity strengthens the heart.

Question 3

List components of a heart-healthy diet.

Answer 3

• Fruits
• Vegetables
• Whole grains
• Nuts
• Fish
• No saturated or trans fats

A balanced diet is crucial for heart health.

Question 4

What do the pulmonary arteries do?

Answer 4

Take blood to the lungs for gas exchange

Blood picks up oxygen and releases carbon dioxide in the lungs.

Question 5

What does blood become after passing through the lungs?

Answer 5

Oxygenated

Oxygen is absorbed and carbon dioxide is released.

Question 6

What is the role of the pulmonary veins?

Answer 6

Bring blood back to the heart

They carry oxygen-rich blood to the left atrium.

Question 7

What valve does blood pass through from the left atrium?

Answer 7

Mitral (or bicuspid) valve

This valve ensures one-way flow into the left ventricle.

Question 8

What are the upper two chambers of the heart called?

Answer 8

Atria

They receive and collect blood.

Question 9

What are the lower two chambers of the heart called?

Answer 9

Ventricles

They pump blood out of the heart.

Question 10

What is the purpose of heart valves?

Answer 10

Prevent backflow of blood

They keep blood flowing in one direction.

Question 11

Name the four heart valves.

Answer 11

• Tricuspid Valve
• Pulmonary Semilunar Valve
• Mitral (Bicuspid) Valve
• Aortic (Semilunar) Valve

These valves control blood flow through the heart.

Question 12

What is the flow of deoxygenated blood starting from the body?

Answer 12

Superior and inferior vena cava -> right atrium

Blood returns from the body before entering the heart.

Question 13

After passing through the mitral valve, where does blood go?

Answer 13

Left ventricle

This chamber pumps oxygenated blood to the body.

Question 14

What is the electrical signal in the heart initiated by?

Answer 14

SA node

It’s known as the pacemaker of the heart.

Question 15

What happens during Atrial Systole?

Answer 15

Atria contract and pump blood into the ventricles

This is part of the cardiac cycle.

Question 16

What is congestive heart failure?

Answer 16

The heart is too weak or stiff to pump blood effectively

This condition affects the heart’s ability to function.

Question 17

What happens during a myocardial infarction?

Answer 17

The coronary artery is blocked, causing heart muscle to die

Commonly known as a heart attack.

Question 18

What is atrial fibrillation?

Answer 18

Abnormal electrical impulses in the atrium cause irregular heartbeat

This condition can lead to various complications.

Question 19

Where is the heart located?

Answer 19

Under the rib cage and in between the lungs

Its position is crucial for its function.

Question 20

How many times does the heart beat in a day?

Answer 20

100,000 times

This is an average estimate for a healthy heart.

Question 21

What is the size of a normal heart valve compared to?

Answer 21

About the size of a half dollar coin

Heart valves play a critical role in blood flow.

Question 22

What does the electrical system of the heart consist of?

Answer 22

• Sinoatrial (SA) node
• Atrioventricular (AV) node
• Bundle of His and Purkinje fibers

This system controls heart contractions.

Question 23

What is the pulmonary circuit?

Answer 23

Movement of blood from the heart to the lungs and back to the heart

This circuit is essential for gas exchange.

Question 24

What is systemic circulation?

Answer 24

Movement of blood from the body to the heart and back to the body

This circulation delivers oxygen and nutrients.