Functions and Anatomy of the Heart

The video explains the heart's role in pumping blood throughout the body, detailing its structure, including the right and left sides, chambers, and valves. It describes the blood circulation process, highlighting the right side's function in pulmonary circulation and the left side's role in systemic circulation. The video also covers the phases of the cardiac cycle, such as atrial and ventricular systole, and the importance of valves in preventing backflow.

What is the primary function of the heart?

• To produce hormones

• To filter waste from the blood

• To pump blood throughout the body

• To digest food

How many chambers does the heart have?

• Two

• Three

• Five

• Four

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

• To pump blood to the brain

• To pump blood to the lungs

• To pump blood to the stomach

• To pump blood to the kidneys

Through which vessel does the left side of the heart pump blood to the body?

• Aorta

• Inferior vena cava

• Superior vena cava

• Pulmonary artery

What happens when the right atrium is filled with blood?

• It contracts and pushes blood into the right ventricle

• It sends blood directly to the lungs

• It stores blood temporarily

• It filters the blood

What is the function of the tricuspid valve?

• To prevent blood from flowing back into the right atrium

• To allow blood to flow into the left ventricle

• To pump blood into the aorta

• To enrich blood with oxygen

Where does oxygenated blood return to the heart from the lungs?

• Left ventricle

• Right ventricle

• Left atrium

• Right atrium

What prevents blood from flowing back into the left atrium?

• Pulmonary valve

• Tricuspid valve

• Mitral valve

• Aortic valve

What is the role of the aortic valve?

• To pump blood into the right atrium

• To prevent blood from flowing back into the left ventricle

• To enrich blood with oxygen

• To allow blood to flow into the lungs

What happens at the end of the cardiac cycle?

• Blood is stored in the left atrium

• A new contraction begins in the right ventricle

• The heart stops beating

• The aortic valve opens