Circulatory system

What type of blood vessels carry blood away from the heart?

• Capillaries

• Veins

• Arteries

Why is the human circulatory system a DOUBLE circulatory system?

• Because of the oxygenated and deoxygenated blood.

• Because of the veins and arteries taking the blood in two directions.

• Because of two directions: heart -lungs and heart-body.

• Because of the circulation on the left and on the right side of the body.

Tick all the characteristics of CAPILLARIES:

• very tiny

• walls made of one layer of cells

• strong, muscular walls

• small lumen

Plasma has the following function:

• to carry oxyhaemoglobin

• to create antibodies

• to transport different substances

Red blood cells (RBC) have the following adaptations:

• they carry oxyhaemoglobin

• they fight pathogens

• they have no nucleus

• they have a biconcave shape

Platelets aren't cells. True or False?

• True

• False

This is the largest artery in your body, and it carries oxygenated blood from the heart to the rest of the body.

• Pulmonary artery

• Vena cava

• Aorta

• Pulmonary vein

Tick the characteristics of VEINS:

• thinner walls than other blood vessels

• they contain valves

• they have very elastic walls

• their walls aren't ery elastic

What's the name of the vessel that transports oxygenated blood from the lungs to the heart?

• Pulmonary artery

• Pulmonary vein

• Vena Cava

• Aorta

Tick the correct names for the 4 chambers of the heart:

• left atrium and right atrium

• upper atria

• left ventricle and right ventricle

• lower ventricles