I. Choose and write the letter of the correct answer on the line provided.

_________1. Which of the following is not a layer of the skin?
a. sebacous b. dermis c. epidermis d. subcutaneous
_________2. Which protects the head from abrasion?
a. hair on the scalp b. hair in the nose c. hair in the ear d. hair on the eyebrows
_________3. Which is the outermost layer of the skin?
a. dermis b. epidermis c. glands d. subcutaneous
_________4. What is the organ that protects the inside organs in the body?
a. hair b. nails c. skin d. glands
_________5. It protects the sensitive fingernails and toes from injury.
a. glands b. nails c. skin d. hair
_________6. What is the mass of food called as it enters the small intestine?
a. amylase b. bolus c. chyme d. feces
_________7. Which part of the digestive system physically digest the food?
a. saliva b. teeth c. esophagus d. large intestine
_________8. What is the role of the large intestine in the digestion process?
a. it secretes bile c. it absorbs some of the water and salts
b. it secretes enzymes that digest proteins d. it serves as a temporary storage of water and food
_________9. What is the function of the small intestine ?
a. Allows movement of food from the stomach to the rest of the body.
b. For the digestion and absorption of nutrients.
c. Aids in physical digestion of food.
d. Acts as a temporary storage of food.
_________10. It is a pear-shaped organ that can temporarily expand to store food.
a. esophagus b. mouth c. stomach d. rectum
_________11. Where does the exchange of gases take place?
a. trachea b. bronchi c. alveoli d. nostrils
_________12. It is a tube at the bottom of the larynx with mucus to prevent dust from
entering the lungs.
a. alveoli b. larynx c. trachea d. pharynx
_________13. Is a bunch of tiny air socs where the exchange of oxygen and carbon dioxide
occurs.
a. branchioles b. trachea c. larynx d. alveoli
_________14. It is the breathing process.
a. integumentary system c. digestive system
b. respiratory system d. nervous system



_________15. What happens to our ribs and diaphragm when we exhale?
a. The ribs and diaghragm relax and the chest cavity becomes smaller.
b. The chest cavity becomes bigger as the ribs and diaphragm contract.
c. The ribs and diaphragm becomes bigger and the chest cavity becomes smaller.
d. The chest cavity becomes smaller as the ribs and diaphragm relax.
_________16. Responsible for distributing nutrients, oxygen and aother essential substances
to all parts of the body.
a. digestive system b. circulatory system c. respiratory system d. nervous system
_________17. It serves as the passageways for blood to reach the different parts of the body.
a. heart b. blood c. plasma d. blood vessel
_________18. It contains the following plasma, red blood cells, white blood cells, and
platelets.
a. blood vessel b. heart c. blood d. veins
_________19. It bring blood from the different parts of the body back to the heart.
a. capilliries b. veins c. artery d. platelets
_________20. What kind of air or gas that release as we exhale? ​