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Understanding the Heart's Adaptation to Exercise

Question 16

What does a lower resting heart rate after training indicate?

A.Weaker heart muscles

B.Improved heart efficiency

C.Increased heart stress

D.Reduced cardiac output

Question 1

How many beats does the heart produce in an average lifetime?

A.1 billion

B.2.5 billion

C.3 billion

D.4 billion

Question 2

What is the primary function of the myocardium?

A.Store blood

B.Produce hormones

C.Pump blood

D.Protect the heart

Question 3

What substance does the pericardium secrete to reduce friction?

A.Adrenaline

B.Lactic acid

C.Serous fluid

D.Water

Question 4

Where is the heart located in the human body?

A.Between the lungs

B.Above the liver

C.In the lower abdomen

D.Behind the brain

Question 5

What is the largest artery in the human body?

A.Pulmonary artery

B.Coronary artery

C.Carotid artery

D.Aorta

Question 6

How is cardiac output calculated?

A.Heart rate x Blood pressure

B.Heart rate x Stroke volume

C.Heart rate x Respiratory rate

D.Heart rate x Body temperature

Question 7

What is an average cardiac output for a female at rest?

A.2.0 L/min

B.3.5 L/min

C.4.9 L/min

D.6.0 L/min

Question 8

What does hypertrophy refer to in cellular physiology?

A.Cell division

B.Cell reduction

C.Cell enlargement

D.Cell mutation

Question 9

What happens to cardiac muscle fibers after a heart attack?

A.They regenerate immediately

B.They are replaced with scar tissue

C.They grow larger

D.They produce more energy

Question 10

What is angiogenesis?

A.Development of new muscles

B.Formation of scar tissue

C.Development of new blood vessels

D.Disintegration of old cells

Question 11

What is the effect of an increased number of mitochondria in cardiac muscle fibers?

A.Decreases ATP production

B.Increases energy production

C.Causes cell death

D.Reduces muscle strength

Question 12

What is the resting heart rate of an Olympic endurance athlete at peak fitness?

A.50 beats per minute

B.40 beats per minute

C.27 beats per minute

D.60 beats per minute

Question 13

What does Brilliant offer to aid in learning?

A.Audio lessons

B.Interactive video games

C.Interactive lessons

D.Physical textbooks

Question 14

What approach do Brilliant's lessons use?

A.Memorization

B.Rote learning

C.First principles

D.Guessing

Question 15

Why is the left ventricle wall thicker than the right?

A.It pumps blood to the entire body

B.It stores more blood

C.It needs less force

D.It works independently