ULUI
1.Directions: Chose and encircle the letter of the correct answer.
1. Which of the following protect the heart and lungs from injury?
a. skull and breastbone
c. ribs and collarbones
b. shoulder blade and collarbones
d. ribs and breastbones
2. Which type of muscle is involved in the beating of the heart?
a. Cardiac muscles
c. Skeletal muscles
b. smooth Muscles
d. all muscles
3. What is HAIR made up of?
a. dermis
b. sweat glands
C.
keratin
d. dandruff
4. Where does digestion begins where food is mechanically digested?
a. Anus
b. Esophagus
c. Stomach
d. Mouth
5. It is the outer part of the respiratory system?
a Lungs b. tongue
c. Nose
d. ribs
6.It filters the blood about 300 times a day in the kidney.
a. platelets b. plasma
c. nephrons
d. cells​