ch 5: resp portion of resp system

Question 1

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

Answer 1

respiratory bronchioles

Question 2

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

Answer 2

simple cuboidal

gas exchange

Question 3

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

Answer 3

alveolar ducts

alveolar sacs

Question 4

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

Answer 4

I (type I pneumocyte)

squamous

Question 5

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

Answer 5

II (type II pneumocyte)

cuboidal

Question 6

three functions of alveolar type II cells:

• ___ cell for both alveolar types
• produce pulmonary ____
• produce ___

Answer 6

stem
surfactant
lysozyme

Question 7

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

Answer 7

monocytes

phagocytosis

Question 8

region between two alveoli

Answer 8

interalveolar septum

Question 9

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

Answer 9

interalveolar septum

Question 10

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

Answer 10

blood-gas barrier

Question 11

parts of blood gas barrier

• pulmonary surfactant
• alveolar type __ cell
• fused __ __
• endothelial cells of __

Answer 11

I
basal lamina
capillary

Question 12

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

Answer 12

I

endothelial

Question 13

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

Answer 13

sympathetic chain ganglia

constriction

Question 14

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

Answer 14

vagus

contract