Understanding Blood and the Cardiovascular System

What analogy is used to describe the function of cells in the cardiovascular system?

• Cells are like gardens.

• Cells are like libraries.

• Cells are like factories.

• Cells are like schools.

Which of the following is NOT a function of blood?

• Transporting oxygen to tissues

• Regulating body temperature

• Producing hormones

• Carrying waste materials for elimination

How does blood help in protecting the body?

• By regulating pH and temperature

• By producing antibodies

• By creating new cells

• By forming a protective layer on the skin

What percentage of body weight does blood approximately constitute?

• 8%

• 5%

• 10%

• 12%

What are the two main components of blood?

• Plasma and red blood cells

• Plasma and formed elements

• Red blood cells and platelets

• White blood cells and platelets