🏃 Effects of Exercise Quiz

What happens to muscle temperature during exercise?

• Decreases
• Stays the same
• Increases
• Depends on the sport

Answer explanation

Muscle temperature increases during exercise.

Why does breathing rate increase during exercise?

• To remove more oxygen
• To increase oxygen intake
• To cool the body
• To slow down the heart

Answer explanation

Breathing rate increases to take in more oxygen.

What effect does increased muscle temperature have on flexibility?

• Decreases flexibility
• No effect
• Improves flexibility
• Causes stiffness

Answer explanation

Warm muscles are more flexible.

During exercise, what happens to blood distribution in the body?

• More blood to the brain
• More blood to working muscles
• More blood to the skin
• No change

Answer explanation

Blood flow is redirected to working muscles.

What short-term effect does exercise have on heart rate?

• Decreases
• Increases
• Stays same
• Becomes irregular

Answer explanation

Heart rate increases to deliver more oxygen.

Which system experiences an increase in tidal volume during exercise?

• Muscular
• Circulatory
• Respiratory
• Digestive

Answer explanation

The respiratory system increases tidal volume.

What causes lactic acid to build up?

• Aerobic respiration
• Anaerobic respiration
• Slow heart rate
• Too much oxygen

Answer explanation

Lactic acid forms during anaerobic respiration.

What is a short-term effect of lactic acid accumulation?

• Improved endurance
• Muscle fatigue
• Increased strength
• Increased flexibility

Answer explanation

Lactic acid causes fatigue and soreness.

Why does cardiac output increase during exercise?

• Stroke volume and heart rate increase
• Blood thickens
• Lungs expand
• Oxygen decreases

Answer explanation

Both HR and SV rise, increasing cardiac output.

How does blood redistribution benefit performance?

• Delivers more blood to muscles
• Cools the brain
• Prevents dehydration
• Reduces fatigue

Answer explanation

Blood is sent to active muscles where it's needed most.