Complete 130 Actual Exam Questions with 100%
Correct Verified Answers/ Graded A+
Three regions of the pharynx - Correct Answer - nasopharynx, oropharynx,
laryngopharynx
nasopharynx - Correct Answer - connection between nasal cavity and
pharynx - superior region of the pharynx at the back of the nose and above
the soft palate
Eustachian tube - Correct Answer - connects the middle ear with the
nasopharynx and allows passage of air
oropharynx - Correct Answer - central portion of the pharynx caudal to the
mouth and anterior to the epiglottis
laryngopharynx - Correct Answer - inferior part of the pharynx connecting
the pharynx to the opening into the larynx and esophagus
what separates the nasal cavity from the oral cavity in the mouth - Correct
Answer - the hard and soft palates
three major cell types of alveoli - Correct Answer - 1) type I alveolar cells
2) type II alveolar cells
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, 3) macrophages
what are the two epithelial cell types in the alveoli - Correct Answer - type I
and type II alveolar cells
Type I alveolar cells - Correct Answer - simple squamous epithelium in
junction with capillaries
95% of alveolar epithelium
Type II alveolar cells - Correct Answer - produce and secrete pulmonary
surfactant that helps keep alveoli open
5% of alveolar epithelium
can divide to replace damaged type I alveolar cells
alveolar macrophages - Correct Answer - dust cells
function of alveolar macrophages - Correct Answer - destroy toxic particles,
allergens or infectious materials such as bacteria and other pathogens
primary immune defense system of alveoli
Steps of Respiration (gas exchange) - Correct Answer - 1) breathing
2) external respiration
3) internal respiration
4) aerobic cellular respiration
breathing - Correct Answer - movement of air into and out of the lungs
includes inspiration and expiration
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