Physiology Questions

3. Which energy-yielding nutrient contributes more as the duration of exercise lengthens?a) Proteinsb) Carbohydratesc) Fats

4. Which system does the body rely on increasingly as the intensity of exercise increases?a) Aerobic lipolytic systemb) Anaerobic systemc) Aerobic glycolytic system

3. Which energy source provides less energy per liter of oxygen consumed than glucose?a) Fatty acidsb) Proteinsc) Carbohydratesd) None of the above

1. What is the first energy pathway used by a person during physical activity?a) Aerobic pathwayb) Lactic acid systemc) Anaerobic pathwayd) None of the above

3. Which energy pathway provides most of the energy for short-duration, high-intensity exercise?a) Aerobic pathwayb) Lactic acid systemc) Anaerobic pathwayd) None of the above

4. What factors influence oxygen capabilities and energy pathways during exercise?a) Duration and availability of oxygenb) Intensity and duration of exercisec) Oxygen consumption and availability of nutrientsd) None of the above

5. What is the relationship between intensity and duration of exercise?a) Directly relatedb) Inversely relatedc) No relationshipd) Cannot be determined

2. Which energy pathway becomes dominant during prolonged, moderate-intensity exercise?a) Aerobic pathwayb) Lactic acid systemc) Anaerobic pathwayd) None of the above

During inspiration air rushes...

During expiration the diaphragm and external intercostals...

In comparison to expiration at rest the frequency of breath...

During expiration the volume of thoracic cavity...

In comparison to inspiration to rest more...

Where does internal respiration occur?

Where does external respiration occur?

The oxyhaemoglobin dissociation curve during exercise

During expiration the air rushes...

During expiration the pressure of air inside the lungs...

In comparison to expiration at rest the rib cage moves down and in...

In comparison to inspiration to rest the volume of the thoracic cavity increases...