Respiratory Acute Responses - Year 12 PE

What is ventilation (V) in the context of exercise physiology?

• The amount of oxygen consumed during exercise

• The volume of air inhaled or exhaled in one minute

• The number of breaths taken per minute

• The total volume of air inhaled or exhaled in one breath

At high intensities of exercise, which component of ventilation plateaus?

• Tidal volume

• Respiratory rate

• Oxygen consumption

• Carbon dioxide production

What occurs when diffusion of gases during exercise?

• Gases move from an area of low concentration to an area of high concentration

• Gases move from an area of high concentration to an area of low concentration

• Gases move in both directions simultaneously

• Gases do not diffuse during exercise

What happens to ventilation once exercise has ceased?

• It remains constant for a period of time

• It decreases suddenly and then returns to resting levels gradually

• It decreases gradually and then returns to resting levels suddenly

• It continues to increase even after exercise has stopped

What is the point where ventilation is no longer increasing linearly with the increase in exercise intensity called?

• Ventilatory threshold

• Oxygen consumption threshold

• Respiratory threshold

• Ventilatory plateau

What is the role of oxygen in the body during exercise?

• It helps in the production of energy

• It helps in the digestion of food

• It helps in the excretion of waste products

• It helps in the regulation of body temperature

What happens to the heart rate during intense exercise?

• It remains constant

• It decreases

• It increases

• It first increases, then decreases

What is Ventilation?

• V (L/min) = TV (L) x RR (breaths per minute)

• V (ml/min) = TV (ml) x RR (breaths per minute)

• V (L/hour) = TV (L) x RR (breaths per hour)

• TV (L/min) = V (L) x RR (breaths per minute)