What is the primary purpose of the cardiovascular system?

• To regulate body temperature

• To transport blood to and from every living cell in the body

• To produce hormones exclusively

• To store nutrients and minerals

How many chambers make up the human heart?

• 2

• 3

• 4

• 6

Which of the following is NOT a component of blood?

• White blood cells

• Platelets

• Plasma

• Nerve cells

Which blood vessels carry oxygenated blood away from the heart?

• Veins

• Capillaries

• Arteries

• Venules

Which type of blood vessels connect arteries and veins at the body cells?

• Venules

• Arterioles

• Capillaries

• Lymphatics

What is the main function of platelets in blood?

• Transport oxygen

• Fight infection

• Blood clotting

• Hormone production

Which blood vessels carry deoxygenated blood back to the heart?

• Veins

• Arteries

• Capillaries

• Arterioles

What percentage of blood volume is made up of plasma?

• 35%

• 45%

• 50%

• 55%

Which component of blood is responsible for oxygen transport?

• Thrombocytes

• Leukocytes

• Erythrocytes

• Plasma

Which type of white blood cell is the most abundant?

• Neutrophils

• Lymphocytes

• Monocytes

• Eosinophils