Investigating Circulation: the Amazing Heart

The video explains the heart's role in circulating blood throughout the body. It describes the heart's structure, including its chambers and septum, and details the two main phases of the heart's pumping action: diastole and systole. The video also outlines the pathways of blood flow, highlighting how oxygen-depleted blood is oxygenated in the lungs and how oxygen-rich blood is distributed to the body.

What is the primary function of the heart?

• To digest food

• To pump blood throughout the body

• To produce hormones

• To filter waste from the blood

How many chambers does the human heart have?

• Two

• Five

• Four

• Three

During which period does blood enter the ventricles from the atria?

• Diastole

• Neither systole nor diastole

• Systole

• Both systole and diastole

Where does oxygen-depleted blood go after leaving the right ventricle?

• Aorta

• Pulmonary artery

• Left atrium

• Right atrium

What is the role of the aorta in blood circulation?

• To carry oxygen-depleted blood to the lungs

• To filter blood

• To store blood

• To distribute oxygen-rich blood to the body