Respiratory

Question 1

What is the general function of alveoli

Answer 1

Gas exchange

Question 2

Alveolar type:
~95% of alveolar surface
Squamous cell with zonula occludens
Gas exchange

Answer 2

Type I

Question 3

Alveolar type:
Most to sides btwn. alveoli
Cuboidal cells
NO gas exchange
Stem cell for both types I & II
Produce pulmonary surfactant and lysozome

Answer 3

Type II

Question 4

What are dust cells that develop from monocytes to clean septal walls via phagocytosis and produce lysozome

Answer 4

Alveolar Macrophage

Question 5

What is the interalveolar septum

Answer 5

Region btwn. 2 alveoli

Question 6

What is the regoin where oxygen and CO2 pass btwn. air and blood

Answer 6

Blood-Gas barrier

Question 7

What is shared btwn. alveolar type I cells and endothelial cell of capillary

Answer 7

Fused basal lamina

Question 8

What is the minimum distance/barrier that allows the most efficient gas exchange

Answer 8

Blood-gas barrier

Question 9

Patches of what kind of epithelium may develop in the upper respiratory tract from too much coughing occurs

Answer 9

Stratified squamous epithelium instead of respiratory epi.

Question 10

What causes respiratory distress of the newborn

Answer 10

Too few mature alveolar type II cells

Question 11

What are the 2 tx. for RDS of the newborn

Answer 11

Artificial surfactant and CPAP or Glucocorticoids given before birth to induce surfactant production

Question 12

What results from a dec. in elastin, reduced surface for gas exchange, and is irreversible

Answer 12

Emphysema

Question 13

What protein produced by hepatocytes protects elastic fibers

Answer 13

Alpha-1 Antitrypsin