Heart

The video explains the heart's role as a muscle that pumps blood throughout the body. It describes the heart's structure, including its chambers and valves, and details the functions of the right and left sides of the heart. The right side pumps blood to the lungs for oxygenation, while the left side circulates oxygen-rich blood to the body. Heart valves ensure one-way blood flow, creating the heartbeat sound.

What is the primary function of the heart?

• To produce hormones

• To digest food

• To pump blood

• To store energy

How does the heart differ from arm and leg muscles?

• It is not a muscle

• It is larger in size

• It never gets tired

• It requires conscious effort to function

What is the role of the right side of the heart?

• To store oxygen

• To pump blood to the brain

• To receive blood from the lungs

• To pump blood to the lungs

Why does the left side of the heart have thicker walls?

• To produce more force

• To store more blood

• To pump blood to the lungs

• To regulate body temperature

What prevents blood from flowing backward in the heart?

• Oxygen levels

• Heart valves

• Blood vessels

• Heart muscles