1. Which part of the respiratory system is composed ofC-shaped cartilaginous rings and cilia?
a. pharynx
b. larynx
c. trachea
d. bronchioles
e. alveolicavity-pharynx-glottis-trachea-larynx-bronchi-bronchioles-alveoli
2. The greatest surface area for gas exhange occurs within the
a. trachea
b. bronchi
c. bronchioles
d. alveoli
3. Which association is not correct?
a. larynx--voice box
b. trachea-windpipe
c. alveoli-gas exchange
d. pharynx-vocal cords
e. hair and mucus--nasal passages
4. In humans, the lungs are caused to inflate when the
a. rib muscles contract
b. diaphragm muscle contracts
c. rib muscles and diaphragm contract
d. diaphragm relaxes
e. rib muscles and diaphragm relax
5. Oxygen is transported in blood most efficiently by
a. being dissolved in the plasma
b. chemical conversion to water
c. combining with hemoglobin
d. combining with carbon dixoide to form bicarbonateions
6. How is most carbon dioxide transported in the blood?
a. as gas bubbles of CO2, just as in carbonated softdrinks
b. as bicarbonate ions (HCO3)
c. on the free hemoglobins since they have lost their oxygenin the tissues
d. as carbon monoxide
e. as carbon compounds and oxygen radicals.