Which of the following structure is not part of the upper respiratory tract?
a) larynx
b) trachea
c) lung
d) epiglottis
The cells that make and secrete mucus that protect the lining of the respiratory tract are called…………….
a) squamous epithelium
b) pneumothorax
c) terminal bronchioles
d) goblet cells
Asit flows from the atmosphere into the lungs, air is humidified and ……by the mucous lining of the trachea
a) cold
b) moist
c) warmed
d) ice
Externals nostrils lie on the ventral side of the head which are………
a) one
b) three
c) four
d) two
Two openings or external nostrils lie on the ventral side of the head , which allow air from outside into ………….
a) Trachea
b) larynx
c) nasal cavity
d) bronchi
External nostrils lie on the ventral side of the head , which allow air from outside into nasal cavity………..
a) one
b) two
c) three
d) four
