Circle the letter of the correct answer.
1. In which part does digestion begin?
a. esophagus
c.anus
b.mouth
d. intestine
2. Where is food finally digested and absorbed?
a small intestine
c.large intestine
b. esophagus
d. mouth
3. Which shows the correct order of food travelling through the digestive system after it is swallowed?
a stomach esophagus, large intestine, small intestine
b. small intestine, large intestine, esophagus, stomach
c. esophagus, stomach, large intestine, small intestine
d. esophagus, stomach small intestine, large intestine
4. Which organ of the digestive system does peristalsis happen?
a mouth b. esophagus c. small intestine d. large intestine
5. Which of the following statements best describes the function of the digestive system?
a. It releases acids and mixes food.
b. It aids in absorption of nutrients from food.
c. It carries food from stomach to the intestine.
d. It breaks down food so that the body can absorb food nutrients.
6. What is the main organ of the respiratory system?
a. lungs
c. pharynx
b. bronchi
d. nostrils
7. It is a system where exchange of gases take place.
a circulatory system
C. respiratory system
b. nervous system
d. digestive system
8. These parts are lined with mucus that help filter dust particles.
a nasal cavity and trachea C. nasal cavity and lungs
b. nasal cavity and epiglottis d. nasal cavity and larynx
9. What happens during inhalations?
a. The ribs and the diaphragm contract.
b. The chest cavity becomes smaller.
c. The ribs and diaphragm relax
d. Air rashes out of the lungs
10. Which of the following is the correct pathway of air into the lungs?
a. nostril pharynx larynx nasal cavity trachea bronchi bronchiole alveoli
b. nostrils Larynx pharynx nasal cavity trachea bronchi bronchiole alveoli
c. nostrils nasal cavity pharynx larynx Trachea bronchi bronchiole alveoli
d. Nasal cavity nostril pharynx larynx trachea bronchi bronchiole alveoli