Year 11 PF Exercise Physiology Quiz

What is the main reason the heart rate increases during exercise?

• To decrease body temperature

• To increase oxygen supply to muscles

• To reduce blood pressure

• To remove lactic acid from the muscles

What happens to the breathing rate during high-intensity exercise?

• It decreases

• It stops

• It increases

• It remains the same

Why does your face turn red during/after exercise?

• Because of increased oxygen levels

• Because of dehydration

• Due to muscle fatigue

• Due to increased blood flow to the skin

What is the primary function of perspiration during exercise?

• To reduce oxygen consumption

• To provide energy

• To cool down the body

• To increase muscle strength

What is muscular hypertrophy?

• Decrease in muscle strength

• Increase in muscle size

• Increase in muscle flexibility

• Decrease in muscle size

What is the role of mitochondria in muscle cells?

• To transport blood

• To remove waste products

• To convert oxygen & nutrients into energy

• To store oxygen

What does VO2 max represent?

• The amount of blood pumped out of the heart in one beat

• The amount of blood pumped out of the heart in one minute

• The maximum amount of oxygen taken in and out of the lungs in one minute

• The volume of air moved in or out of the lungs during rest

What is the effect of increased haemoglobin in the blood?

• Decreased heart rate

• Decreased breathing rate

• Increased oxygen transport to muscles

• Increased muscle size

What is the main waste product removed by blood during exercise?

• Oxygen

• Carbon dioxide

• Glucose

• Lactic acid

A long-term effect of endurance training on the heart is: ................................... stroke volume