3rdSCI6: circulatory system

What system of the body is responsible for distributing nutrients, oxygen, and other essential substances to all parts of the body.

• Respiratory system

• Circulatory system

• Skeletal System

• Integumentary system

Which of the following substances are carried by the blood

• Carbon dioxide

• essential nutrients

• oxygen

• All of the above

What do you call a hollow muscular organ located in the chest between the lungs? It is also the pumping organ of the body.

• heart

• blood

• nerves

• blood vessels

How many chambers does the human heart have?

• 1

• 2

• 3

• 4

what do you call an organ inside the heart that prevents the backflow of blood and ensures that blood flows only in one direction?

• Atrium

• Ventricles

• valves

• Pericardium

What do you call the tubes that serve as a passageway for blood to reach the different parts of the body?

• blood

• blood vessels

• veins

• ventricles

Which blood vessels carry oxygen-rich blood away from the heart?

• Capillaries

• Arteries

• Veins

• blood

Which blood vessels carry oxygen-poor blood from the different parts of the body back to the heart?

• Arteries

• Veins

• Blood

• Capillaries

What do you call the smallest blood vessels

• Arteries

• Veins

• blood

• Capilaries

What do you call the smallest Artery?

• Aorta

• Capillary

• Arterioles

• Pulmonary Artery