Exercise Physiology Quiz

What is the primary function of the cardiovascular system during exercise?

Answer explanation

The primary function of the cardiovascular system during exercise is to deliver oxygen and nutrients to the muscles and remove waste products efficiently.

Describe the role of the respiratory system in maintaining homeostasis during physical activity.

Answer explanation

The respiratory system helps maintain homeostasis during physical activity by increasing oxygen intake and removing carbon dioxide, ensuring proper gas exchange and pH balance in the body.

What are the three types of muscle tissue found in the human body?

Answer explanation

The three types of muscle tissue found in the human body are skeletal muscle, smooth muscle, and cardiac muscle.

Explain the difference between aerobic and anaerobic respiration

Answer explanation

Aerobic respiration requires oxygen to produce energy, while anaerobic respiration does not need oxygen and produces less energy.

What is the function of ATP in muscle contraction?

Answer explanation

ATP provides the energy needed for muscle contraction by powering the cross-bridge cycling between actin and myosin filaments.

How does the body regulate temperature during exercise?

Answer explanation

The body regulates temperature during exercise by increasing sweat production, which evaporates and cools the skin. Blood vessels near the skin surface dilate to release heat, and the respiratory rate increases to release heat through exhalation.

Define VO2 max and its significance in sports performance.

Answer explanation

VO2 max is the maximum amount of oxygen a person can utilize during intense exercise. It is a key indicator of aerobic endurance and performance in sports.

What are the short-term effects of exercise on the cardiovascular system?

Answer explanation

Exercise increases heart rate, cardiac output, and blood flow, improving cardiovascular function. It also helps lower blood pressure and improve circulation in the short term.

Describe the process of glycogenolysis and its importance during exercise.

Answer explanation

Glycogenolysis is the breakdown of glycogen into glucose for energy. During exercise, it provides a quick source of fuel for muscles.

What is the role of lactic acid in muscle fatigue?

Answer explanation

Lactic acid accumulation in muscles during intense exercise contributes to muscle fatigue by lowering pH levels and interfering with muscle contractions.