1. Directions: Choose the letter with the best answer. 1. What is the main function of the musculoskeletal system? A Digestion of food B. Helps body absorb oxygen from the air C. Provides support body movement and protecting vital organs D. Carries oxygen, nutrients and hormones to the cells 2. Which is not a function of the skeletal system? A Produce blood cells C. provide a framework for body tissues B. Regulates body temperature D. serves as a storehouse for minerals 3. The following are types of muscles except A Smooth B. skeletal C.cardiac D. epithelial 4. Which of the following is a skin pigment that protects cells from sun's radiation damage? A. Dermis B. collagen C. melanin D. keratin 5. Skin plays a role in A. Storing minerals C. supporting the body B. Producing blood cells D. regulating body temperature 6. The layer of the skin that contains tough connective tissue, hair follicles, and sweat glands A Dermis B. epidermis C. subcutaneous D. cuticle 7. When exposed to sunlight, skin can produce which vitamin? A. Vitamin A B Vitamin B C Vitamin C D Vitamin D 8. Which of these is not a function of the digestive system? A. Regulating metabolism C. absorbing nutrients B. Digesting food D. eliminating wastes 9. It is a series of wave-like contractions that moves food to the different processing stations in the digestive tract A. Swallowing B. digestion C. absorption D. peristalsis 10. Digestion is completed and food nutrients is absorbed in the A Stomach B. small intestine C. large intestine D. rectum​