Cardiovascular System

Which of the following delivers oxygen to cells?

• Red Blood cells
• White blood cells
• Platelets
• Plasma

Which of the following are the blood vessels that have the thickest walls?

• Veins
• Arteries
• Cappillaries

Blood enters the heart at the ....

• Right Atrium
• Left Atrium
• Right Ventricle
• Left Ventricle

What is the name of the part labelled 3?

• Right Atrium
• Left Atrium
• Right Ventricle
• Left Ventricle

What is the name of the part labelled 2?

• Right Atrium
• Left Atrium
• Right Ventricle
• Left Ventricle

What is the function of a valve?

• Helps blood to clot
• Keeps blood flowing in all directions
• Keeps blood flowing in one direction
• Stops blood from flowing

Which vessels carry blood away from the heart?

• arteries
• veins
• capillaries

Which part of the heart pumps deoxygenated (oxygen-poor) blood?

• Left side
• Right side
• Top side
• Bottom side

Oxygen-poor blood arrives to the heart from the the body via the _____.

• aorta
• pulmonary arteries
• superior and inferior vena cava
• pulmonary veins

Pulmonary vein

• carries oxygenated blood to left atrium
• carries deoxygenated blood to left ventricle
• carries oxygenated blood to left ventricle
• carries deoxygenated blood to left atrium