8. Which serves as the passage of air between the pharynx above and trachea below. It plays an
important role in human speech.
a. nose
b. pharynx
c. diaphragm
d. larynx
9. What are the tiny sacs inside the lungs where oxygen is taken in and carbon dioxide is carried out.
a. lungs
b. alveoli
bronchioles
d. trachea
10. Aside from breathing, what other things do the lungs enable us to do.
a. It filters gaseous waste materials
b. It transports nutrients to the cell
c. It eliminates undigested food
d. it controlled everything we do.
11. Why is our nervous system important?
a. It absorb the nutrients needed by our body
b. It removes waste from the body
c. It controls the body systems so that they work properly
d. It protects our body from harmful external elements.
12. The basic unit of the nervous system_
a. cerebrum b. brain
C. spinal cord d. nerve cells
13. Which is not the parts of the brain?
a. cerebrum b. cerebellum C. axon
d. brainstem
14. Which travels to the neurons?
a, stimulus
B. impulse
C. reflex
d. cell body
15. What will happen to the body when the kidneys stop working?
a. The body accumulates poisonous substance in the blood.
b. The body becomes healthy and strong,
c. The body sweats a lot
d. the body will be dehydrated
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Answer:
8.The larynx, commonly called the voice box or glottis, is the passageway for air between the pharynx above and the trachea below. ... The larynx plays an essential role in human speech. During sound production, the vocal cords close together and vibrate as air expelled from the lungs passes between them.
9.Bronchioles end in tiny air sacs called alveoli, where the exchange of oxygen and carbon dioxide actually takes place. Each person has hundreds of millions of alveoli in their lungs.
10.The lungs and respiratory system allow oxygen in the air to be taken into the body, while also letting the body get rid of carbon dioxide in the air breathed out.