Body Systems: Test

What is the main function of the cardiovascular system?

• Provides cells with nutrients
• Removes waste products of metabolism
• Circulates oxygen and removes carbon dioxide
• Strengthens the heart muscle

What does the term "cardio" mean?

• Lungs
• Heart
• Blood vessels
• Muscles

How does regular physical activity benefit the cardiovascular system?

• Improves the efficiency of the heart
• Reduces blood pressure
• Increases good cholesterol
• All are correct

What is the Karvonen formula used for?

• Determining target heart rate zones
• Calculating body weight
• Measuring aerobic capacity
• Assessing fatigue levels

What happens when moderate- and vigorous-intensity physical activity is done regularly?

• Blood flow to the muscles increases
• Oxygen levels in the blood rise
• The heart's ability to pump blood improves
• All are correct

How does exercise improve the heart's efficiency?

• By increasing aerobic capacity
• By reducing fatigue levels
• By lowering resting heart rate
• By improving body's ability to use oxygen

What are the benefits of exercise to the heart?

• Improved strength, positive effects on risk factors, and increased aerobic capacity
• Increased resting heart rate
• Reduced fatigue and increased bad cholesterol
• All are correct

What is the purpose of the respiratory system?

• To deliver oxygen to the cells in the body
• To remove waste gasses from the body
• To protect the airways from harmful substances
• All are correct

Which organs and tissues are included in the respiratory system?

• Airways, lungs, and blood vessels
• Heart, liver, and kidneys
• Stomach, small intestine, and large intestine
• Brain, spinal cord, and nerves

What is the role of muscles in the respiratory system?

• To power the lungs
• To pump blood to the lungs
• To digest food in the lungs
• To protect the lungs from infections