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A.(WW) Answer the following questions. Ask help from any family member, if you feel it's hard for you. Encircle the letter of the correct answer. 1. It is the largest organ of the human body that performs varied functions like excretion, sensation and temperature regulator. a. bones c. heart b. muscles d. skin
2.Why do we avoid exposing ourselves to too much sunlight? a. to become sleepy c. to avoid sunburn b. to avail vitamin D d. to have more melanin
3. The outermost layer of the skin that has pores for sweat and oil glands, dead cells and keratin is- a. dermis c. hypodermis b. epidermis d. subcutaneous layer
4. A tough tissue that held the bones together at the joints. a. ligaments c. cartilage b. tendons d. bones
5. Bones have bone marrow which have the main function of a. serving as reservoir for minerals c. giving shape to the body b. production of red blood cells d. protecting vital organs
6. Muscles that move under the control or will of the body is classified as- a. cardiac c. voluntary b. involuntary d. smooth 7. Muscles of the heart, stomach, intestines belong to the- a. controlled c. soft b. involuntary d. voluntary
8. A network of cells and tissues that control thoughts, movements and life processes. Which of the following organ system? a. digestive c. integumentary b. musculo-skeletal d. nervous
9. What organ of the Central Nervous System coordinates with the spinal cord in controlling all activities of the body? a.brain c. lungs b. skin d. bones
10.Drinking too much coffee is harmful for the nervous sytem, why? a. it stimulates bowel movement c. it contains caffeine that speeds up activities of the system b.it supplies heat to the body d. it has nicotine that stops the function of the system
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