Human Circulatory System Concepts

What color is human blood inside the body?

• Blue

• Green

• Red

• Purple

Which component of blood is primarily responsible for fighting infections?

• Plasma

• Red blood cells

• Platelets

• White blood cells

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

• To carry blood towards the heart

• To carry blood away from the heart

• To exchange oxygen and carbon dioxide with tissues

• To prevent blood from flowing backward

Which side of the human heart is responsible for pumping deoxygenated blood?

• The left side

• The right side

• Both sides pump oxygenated blood

• Both sides pump deoxygenated blood

Which path does deoxygenated blood take immediately after entering the heart from the body?

• Right Atrium -> Tricuspid Valve -> Right Ventricle -> Pulmonary Valve -> Pulmonary Artery

• Left Atrium -> Mitral Valve -> Left Ventricle -> Aortic Valve -> Aorta

• Right Ventricle -> Pulmonary Artery -> Lungs -> Pulmonary Vein

• Left Ventricle -> Aorta -> Body -> Vena Cava

What is the primary function of the lungs in the circulatory system?

• Pump blood to the body.

• Deliver oxygen and glucose to the heart.

• Exchange carbon dioxide for oxygen in the blood.

• Separate oxygen-rich and oxygen-poor blood.

After blood picks up oxygen in the lungs, which structure does it enter next to return to the heart?

• Right Atrium

• Left Atrium

• Right Ventricle

• Aorta

What is the name of the blood vessels that supply the heart muscle itself with oxygen and nutrients?

• Pulmonary Arteries

• Aorta

• Coronary Arteries

• Vena Cava