Transport in Animals

What type of circulatory system do humans have?

• Open circulatory system

• Single circulatory system

• Double circulatory system

• Water vascular system

Which of the following best describes the role of the circulatory system?

• To produce energy for cells

• To transport substances around the body

• To digest food and absorb nutrients

• To exchange gases in the lungs

What is the function of the septum in the heart?

• To prevent backflow of blood

• To separate oxygenated and deoxygenated blood

• To pump blood into the lungs

• To regulate blood pressure

carry blood away from the heart.

• Veins
• Capillaries
• Arteries
• Lymph vessels

What is the function of the coronary arteries?

• To carry oxygenated blood to the body

• To supply the heart muscle with oxygen and nutrients

• To remove carbon dioxide from the heart

• To store oxygen for emergency use

Which of the following is a characteristic of arteries?

• Thin walls and wide lumen

• Thick walls and narrow lumen

• Valves to prevent backflow

• Carry deoxygenated blood only

The function of veins is to blood towards the heart.

• pump blood to the lungs
• carry blood towards the heart
• exchange gases between blood and ti
• filter blood in the kidneys

The blood vessel that has walls that are one cell thick is a

• Artery
• Vein
• Capillary
• Aorta

What prevents the backflow of blood in veins?

• Thick muscular walls

• High blood pressure

• Valves

• Elastic walls

Match the following arteries with their descriptions.

• The arteries that supply blood to the heart muscle.

• Coronary artery

• The artery that carries blood from the heart to the lungs.

• Vena cava

• The large vein that carries deoxygenated blood into the heart.

• Pulmonary artery

• The largest artery in the body, carrying blood from the heart to the rest of the body.

• Aorta