The Heart and Cardiac Cycle

What is the main function of the heart?

• Digest food

• Pump blood

• Filter blood

• Produce hormones

Which chamber of the heart receives oxygenated blood from the lungs?

• left ventricle

• right atrium

• left atrium

• right ventricle

What is the correct order of blood flow through the heart?

• left atrium, left ventricle, pulmonary artery, lungs, pulmonary veins, right atrium, right ventricle, aorta

• right atrium, right ventricle, pulmonary artery, lungs, pulmonary veins, left atrium, left ventricle, aorta

• right atrium, left ventricle, pulmonary artery, lungs, pulmonary veins, left atrium, right ventricle, aorta

• right atrium, right ventricle, pulmonary veins, lungs, pulmonary artery, left atrium, left ventricle, aorta

What is the purpose of the cardiac cycle?

• To pump blood and circulate oxygen and nutrients.

• To filter waste products from the blood.

• To produce hormones.

• To regulate body temperature.

Which part of the heart is responsible for pumping oxygenated blood to the body?

• left ventricle

• right atrium

• left atrium

• right ventricle

What are the four chambers of the heart?

• left atrium, right atrium, left ventricle, left ventricle

• left atrium, right atrium, right ventricle, right ventricle

• left atrium, left ventricle, right atrium, right ventricle

• left atrium, right atrium, left ventricle, right ventricle

What is the role of valves in the heart?

• Valves in the heart regulate the heart rate.

• Valves in the heart help in the production of red blood cells.

• Valves in the heart control the body's temperature.

• Valves in the heart prevent the backflow of blood and ensure the unidirectional flow of blood through the heart chambers.

What are the phases of the cardiac cycle?

• atrial systole, ventricular systole, and diastole

• ventricular diastole, atrial diastole, and ventricular systole

• ventricular systole, atrial diastole, and ventricular diastole

• ventricular systole, atrial systole, and ventricular diastole

What is the function of the atria in the heart?

• To regulate the heart rate.

• To receive and pump blood into the ventricles.

• To filter impurities from the blood.

• To store excess blood.

How does blood flow through the heart?

• Blood flows through the heart in a circular motion.

• Blood flows through the heart in a specific sequence as described above.

• Blood flows through the heart in reverse direction.

• Blood flows through the heart in a random pattern.