Lp 53

Question 1

Simple squamous epithelium (type 1 cells)

Answer 1

Alveolar wall

Question 2

Single layer of cells

Answer 2

Capillary endothelium

Question 3

-non-cellular layer
-composed of glycoproteins; filter

Answer 3

Basal lamina

Question 4

3 structures of respiratory membrane

Answer 4

-alveolar wall
-capillary endothelium
-basal lamina

Question 5

Type II cells

Answer 5

Secrete surfactant

Question 6

Scaffolding of elastic fibers

Answer 6

Allow recoil

Question 7

Alveolar pores

Answer 7

Equalize P

Question 8

Macrophages

Answer 8

Phagocytic

Question 9

-site of gas exchange
-begins at respiratory bronchioles; terminates in alveoli
-branching of bronchioles Terminates n alveolar ducts
-ducts lead to alveolar sacs

Answer 9

The respiratory zone

Question 10

Alveolar sacs

Answer 10

Cluster of alveoli

Question 11

Alveoli

Answer 11

Most of lung volume & increased surface for gas exchange

Question 12

Inverse correlations

Answer 12

When one factor increases & the other decreases

Question 13

Relatively high O2 (alveolus)
&
Relatively low CO2 (alveolus)

Answer 13

-diffusion of O2 into capillary; blood is oxygenated
&
-diffusion of CO2 into alveolus

Question 14

Amount of gas in alveoli

Answer 14

Ventilation

Question 15

BF in pulmonary capillaries

Answer 15

Perfusion

Question 16

Maintaining proportional air flow & BF in alveoli

Answer 16

Coupling