1.) What is digestive system?
A. The body's system of nerves
B. The body's breathing system
C. The body's food-processing system
D. The body's blood transporting system
2.) Which of the following is not strictly a component of the integumentary system?
A. dermis B. epidermis C.hypodermis
D. sudoriferous gland
3.) What is the main organ of the Integumentary System?
A. heart B. lungs C. mouth D. skin
4.) How does the integumentary system contribute to immunity?
A. It makes us waterproof.
B. It produces immune cells.
C. It feels when microorganisms are trying to enter.
D. It provides a physical barrier to most microorganisms.​