Edexcel Paper 1: Topic 1.3: Circulatory system

What makes up the circulatory system?

• The heart

• Three types of blood vessels

• The lungs

• The blood

What are the functions of the Circulatory system?

• Transport

• Clotting

• Temperature regulation

• Correct enzyme functioning

One function of the circulatory system is transport. Which best explains this role during exercise

• To transport plasma around the body

• Blood carries carbon dioxide and lactic acid away

• Blood delivers oxygen and nutrients (glucose) to where it needs to go

• To allow for gaseous exchange between capillaries and alveoli

One function of the circulatory system is clotting. Which best explains this role during exercise

• Platelets seal a wound quickly preventing bleeding

• Helps to create a scab

• By sealing the wound quickly the body stops infection

• Stops you bleeding to death

One function of the circulatory system is temperature regulation. Which best explains this role during exercise

• Vasoconstriction is the narrowing of blood vessel lumen

• Vasodilation increases blood flow to the skin where it is cooled

• Vasodilation is the opening of blood vessel lumen

What is the name of the vein that carries blood from the lungs to the heart?

• Vena Cava

• Aorta

• Pulmonary vein

• Pulmonary artery

What is the name of the main artery that carries blood from the heart to the body?

• Vena Cava

• Aorta

• Pulmonary vein

• Pulmonary artery

What is the name of the main vein that carries blood from the body into the heart?

• Vena Cava

• Aorta

• Pulmonary vein

• Pulmonary artery

What is the name of the two valves between the atrium and ventricles

• Pulmonary values

• Bicuspid

• Tricuspid

• Semi lunar

Which is NOT a characteristics of arteries?

• All arteries carry oxygenated blood

• All arteries carry blood away from the heart

• Arteries have a high blood pressure then veins and capillaries

• Arteries have thick, elastic walls and narrow lumen