Understanding the Circulatory System

What are the four main chambers of the heart?

• right atrium, right ventricle, left atrium, left ventricle

• right atrium, left ventricle, left atrium, pulmonary artery

• upper chamber, lower chamber, left chamber, right chamber

• right atrium, right atrium, left ventricle, left ventricle

What is the function of the left ventricle?

• To pump deoxygenated blood to the lungs.

• To regulate blood pressure in the arteries.

• To pump oxygenated blood to the body.

• To receive blood from the right atrium.

Name the three types of blood vessels.

• arteries, veins, arteries

• arteries, capillaries, blood cells

• capillaries, veins, lymphatics

• arteries, veins, capillaries

What is the primary function of arteries?

• The primary function of arteries is to transport oxygenated blood from the heart to the body.

• To regulate body temperature through heat exchange.

• To absorb nutrients from the digestive system.

• To transport deoxygenated blood from the body to the heart.

How do veins differ from arteries?

• Veins carry oxygenated blood and have thicker walls.

• Veins differ from arteries in that they carry deoxygenated blood, have thinner walls, and contain valves, while arteries carry oxygenated blood and have thicker walls.

• Arteries contain valves and carry deoxygenated blood.

• Veins have thicker walls and do not carry blood.

What role do capillaries play in the circulatory system?

• Capillaries transport oxygen from the lungs to the heart.

• Capillaries are responsible for pumping blood throughout the body.

• Capillaries store excess blood for later use.

• Capillaries enable the exchange of substances between blood and tissues.

What is the main function of red blood cells?

• To store nutrients and vitamins.

• To transport oxygen and carbon dioxide.

• To produce insulin for the body.

• To fight off infections and diseases.

How do red blood cells transport oxygen?

• Red blood cells transport oxygen through diffusion in plasma.

• Red blood cells transport oxygen by converting it to glucose.

• Red blood cells transport oxygen by binding it to hemoglobin.

• Red blood cells transport oxygen by releasing carbon dioxide.

What is the significance of hemoglobin in red blood cells?

• Hemoglobin is a type of white blood cell that fights infections.

• Hemoglobin helps in the digestion of nutrients in red blood cells.

• Hemoglobin is responsible for producing energy in red blood cells.

• Hemoglobin is significant for transporting oxygen and carbon dioxide in red blood cells.

Describe the pathway of blood flow through the heart.

• body -> left atrium -> left ventricle -> lungs -> right atrium -> right ventricle -> aorta -> body

• The pathway of blood flow through the heart is: body -> right atrium -> right ventricle -> lungs -> left atrium -> left ventricle -> aorta -> body.

• body -> right atrium -> lungs -> left atrium -> aorta -> left ventricle -> right ventricle -> body

• body -> right ventricle -> lungs -> left ventricle -> left atrium -> aorta -> body