Transport in Mammals

Which circulatory system can be found in mammals?

• Semi-closed

• Closed double

• Closed single

• Open

What is the main function of arteries in the circulatory system?

• Carry blood to the heart

• Store excess blood

• Carry blood away from the heart

• Exchange gases with tissues

What is the main function of capillaries in the circulatory system?

• Store excess blood

• Carry blood away from the heart

• Pump blood to the lungs

• Exchange gases with tissues

What is the role of venules in the circulatory system?

• Exchange gases with tissues

• Feed blood into capillaries

• Carry blood away from the heart

• Carry blood from the body to the heart

What is the main function of veins in the circulatory system?

• Carry blood to the body from the heart

• Carry blood away from the heart

• Carry blood from the body to the heart

• Exchange gases with tissues

What is the purpose of tissue fluid in the body?

• Carry oxygen to the tissues

• Exchange substances between blood and cells

• Store excess nutrients

• Regulate body temperature

What is the main component of tissue fluid and blood?

• Lipids

• Water

• Carbohydrates

• Proteins

What is the function of haemoglobin in the blood?

• Digest food

• Produce energy

• Transport oxygen

• Regulate body temperature

What is the role of carbonic anhydrase in the blood?

• Transport oxygen

• Break down carbon dioxide

• Produce energy

• Regulate body temperature

What effect does high altitude have on red blood cell count?

• Decreases

• Stays the same

• No effect

• Increases