ch 5: resp portion of resp system Flashcards Preview

Organ Histo Exam II > ch 5: resp portion of resp system > Flashcards

Flashcards in ch 5: resp portion of resp system Deck (14):
1

first region of resp portion of the resp system are the ___ ___

respiratory bronchioles

2

__ __ epi with claras and some cilia composes the resp bronchioles, similar to terminal bronchioles but with some simple squamous ep, therefore enabling __ ___

simple cuboidal
gas exchange

3

two resp portion structures that both function in gas exchange and have structures similar to alveoli (which also functions in gas exchange)

alveolar ducts
alveolar sacs

4

alveolar type ____ cell makes up 95% of alveolar surface, is made of ___ type cells w/ zonula occludens bt, and functions in gas exchange

I (type I pneumocyte)
squamous

5

alveolar type __ cell mostly to sides bt alveoli, made of ___ cells, and has THREE functions

II (type II pneumocyte)
cuboidal

6

three functions of alveolar type II cells:
-___ cell for both alveolar types
-produce pulmonary ____
-produce ___

stem
surfactant
lysozyme

7

alveolar macrophages (dust cells) develop from ____ and function to clean septal walls via ____

monocytes
phagocytosis

8

region between two alveoli

interalveolar septum

9

alveolar type I & II cells
continuous capillaries
fibroblasts
basal lamina
small amt of CT with MANY elastic fibers
--parts that compose the:

interalveolar septum

10

region where oxygen and CO2 pass bt the air and blood, minimum diffusion distance/barrier that allows for most efficient exchange

blood-gas barrier

11

parts of blood gas barrier
-pulmonary surfactant
-alveolar type __ cell
- fused __ __
-endothelial cells of __

I
basal lamina
capillary

12

fused basal lamina is shared bt alveolar type ___ cell and ___ cell of cap

I
endothelial

13

thoracic ____ ___ ____ provide fibers that relax bronchial smooth musc, resulting in bronchiodilation & ____ BV via stim the smooth musc in tunica media

sympathetic chain ganglia
constriction

14

the ____ nerve provides PARAsympathetic fibers to ____ bronchial smooth muscle resulting in bronchoconstriction

vagus
contract