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-
osoit
doirwan
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
d. smooth
b. involuntary
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
to 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
bod
bb. skin aber mit rotoli d. bones al lloart nuts
10.Drinking too much coffee is harmful for the nervous sytem, why?
a. it stimulates bowel movement c. it contains caffeine that speeds up
noul omse olig activities of the system
b.it supplies heat to the body d. it has nicotine that stops the
function of the system
B.(PW) Complete the diagram below by supplying the needed answer.​