11BIO - M2IQ2&3 Human Circulatory system

What is the main function of the heart?

• To produce hormones

• To pump blood around the body

• To digest food

• To filter waste from the blood

Which chamber of the heart pumps blood to the pulmonary circulation?

• Left atrium

• Right atrium

• Left ventricle

• Right ventricle

What is the role of the left ventricle?

• Receiving blood from the body

• Pumping blood to the body

• Pumping blood to the lungs

• Receiving blood from the lungs

What is the function of veins?

• To carry blood back to the heart

• To carry blood away from the heart

• To pump blood

• To exchange gases with tissues

Where does external respiration occur?

• Between the alveoli and capillaries

• Between the arteries and veins

• Between the heart and lungs

• Between the muscle cells and capillaries

What is the role of capillaries?

• To carry blood to the heart

• To exchange nutrients and waste

• To produce red blood cells

• To pump blood

What is the main artery that carries blood from the left ventricle?

• Vena cava

• Coronary artery

• Aorta

• Pulmonary artery

What is the function of the respiratory system?

• To produce hormones

• To digest food

• To exchange gases between air and blood

• To pump blood

What is internal respiration?

• Exchange of gases between the heart and lungs

• Exchange of gases between the blood and lungs

• Exchange of gases between capillaries and muscle cells

• Exchange of gases between the alveoli and capillaries

The heart has ____________ chambers.

• 3
• 4
• 5
• 1