10. Which is the largest organ of the body? a. heart b. brain c. lungs d. skin 11. Which is the outermost layer of the skin that covers the entire body surface? a. epidermis b. dermis c. hypodermis d. hair 12. Which of the following is made up of hardened keratinocytes that cover the tips of fingers and toes to protect from environmental damage? a. hair follicle b. nails c. cuticle d. dermis _ 13. The following describes the integumentary system except a. It acts as a barrier to protect the body from the outside world. b. It involves the breakdown of foods into smaller components until they can be absorbed and assimilated in the body. c. It eliminates waste products in the body in the form of sweat, oil and wax. d. It helps retain body fluids.
