The Importance of the Cardiovascular System

The video discusses how heart rates increase after running due to the body's need for more oxygen. It explains the role of the cardiovascular system in transporting oxygen and nutrients, removing waste, and fighting disease. The cardiovascular system consists of the heart, blood, and blood vessels, and is crucial for maintaining bodily functions during exercise.

What happens to a person's heart rate after running 100 meters?

• It decreases.

• It increases.

• It stops.

• It remains the same.

Why does the body require more oxygen during exercise?

• To cool down the body.

• To decrease heart rate.

• To increase blood pressure.

• To meet the increased energy demands.

What components make up the cardiovascular system?

• Brain, heart, and nerves.

• Stomach, intestines, and liver.

• Heart, blood, and blood vessels.

• Lungs, heart, and muscles.

What is one of the roles of blood in the cardiovascular system?

• To produce oxygen.

• To transport nutrients and waste.

• To regulate body temperature.

• To digest food.

How does the cardiovascular system help in maintaining health?

• By producing hormones.

• By fighting disease and infection.

• By storing energy.

• By controlling muscle movement.