Understanding the Cardiovascular System

What is the main function of the heart in the cardiovascular system?

• To produce blood

• To pump blood throughout the body

• To filter blood

• To store blood

Which component of blood is primarily responsible for transporting oxygen?

• White blood cells

• Platelets

• Red blood cells

• Plasma

What is the name of the blood vessels that carry blood away from the heart?

• Veins

• Capillaries

• Arteries

• Venules

Which part of the blood is responsible for clotting?

• Plasma

• Red blood cells

• White blood cells

• Platelets

What is the primary function of white blood cells?

• To carry oxygen

• To fight infections

• To transport nutrients

• To remove waste

Which blood vessel type has the thinnest walls, allowing for exchange of substances between blood and tissues?

• Arteries

• Veins

• Capillaries

• Arterioles

What is the liquid component of blood called?

• Plasma

• Hemoglobin

• Serum

• Lymph

Which chamber of the heart receives oxygenated blood from the lungs?

• Right atrium

• Left atrium

• Right ventricle

• Left ventricle

What is the main role of hemoglobin in the blood?

• To fight infections

• To carry carbon dioxide

• To carry oxygen

• To clot blood

Which of the following is a function of blood in the human body?

• To digest food

• To regulate body temperature

• To produce hormones

• To store energy