Circulatory System Functions and Components

The video explains the importance of movement and energy, highlighting how the circulatory system, composed of the heart and blood vessels, facilitates the flow of blood throughout the body. It details the process of gas exchange, where oxygen is delivered to cells and carbon dioxide is removed. The video also describes the components of blood, including plasma and hemoglobin, and concludes with a summary of the circulatory process, emphasizing the continuous cycle of blood flow that supports life and movement.

Why is it important for the body to keep moving?

• To stay warm

• To build muscles

• To circulate energy

• To improve digestion

What is the primary function of oxygen in the body?

• To provide energy

• To cool the body

• To build tissues

• To remove waste

What are the main components of the circulatory system?

• Heart and muscles

• Heart and lungs

• Heart and blood vessels

• Lungs and blood vessels

What is the role of arteries in the circulatory system?

• To store blood

• To exchange gases and nutrients

• To carry blood to the heart

• To carry blood away from the heart

Where does the blood get oxygenated?

• In the lungs

• In the arteries

• In the veins

• In the heart

What is the function of capillaries?

• To exchange gases and nutrients

• To carry blood to the heart

• To carry blood away from the heart

• To store blood

What is plasma composed of?

• Proteins, salts, and water

• Red blood cells and water

• Platelets and salts

• White blood cells and proteins

What is the role of red blood cells?

• To fight infections

• To store nutrients

• To carry oxygen

• To clot blood

Why is blood red?

• Because of plasma

• Because of platelets

• Because of white blood cells

• Because of hemoglobin

What happens when the body absorbs oxygen?

• It cools down

• It generates energy

• It stores fat

• It builds muscles