Respiratory System Flashcards
the system of the body concerned with gas transport
respiratory system
__________: concerned with the movement of gases from the outer environment through the respiratory tubes to the lungs
conductive phase
____________: concerned with the exchange of O2 and CO2 between the blood and the air sacs of the lungs
gas exchange phase
order that air passes from outer environment to the lungs:
nasal cavity/oral cavity pharynx larynx trachea bronchus lung
cartilaginous and membranous tube extending from the larynx above, to the point at which it bifurcates into 2 primary bronchi before
called the _________
_____ cm in length
composed of a series of 16 to 20 C-shaped rings of _______ cartilage
trachea
windpipe
15
hyaline
the trachea terminates by bifurcating onto 2 ___________
primary bronchi
the _______ primary bronchus
it is _________, ________, and straighter
______ cm in length
divides into _____ secondary bronchi
right
shorter, wider
2.5
3
3 secondary bronchi will divide into a number of ____________ that will supply ____________
they are separated from each other by ___________ that prevent diffusion of air from 1 segment to another
tertiary bronchi, bronchopulmonary segments
connective tissue septa
_____ primary bronchus
smaller in calliber but twice as _______ as the _____
____ cm in length
divides into ______ secondary bronchi
left, long, right
5
2
objects falling through the trachea would most likely lodge in the _____ primary bronchus since it is more in line with the trachea
right
________ are much smaller and more numerous than bronchi
do not require _______ in their walls to keep them from collapsing on inspiratory movements
bronchioles, cartilage
terminal bronchioles in turn divide into _____________
very short tubes composed of ____________ and _________
a few ________ bud off these and are the reason why these bronchioles are termed this
they branch and radiate conelike into _____ to _____ alveolar ducts
respiratory bronchioles
smooth muscle, connective tissue
alveoli
2, 11
the _________ are long, thin-walled tubes of connective tissue and smooth muscle
from these arise single _________ and _______ containing 2 or more ______
alveolar ducts
alveoli, alveolar sacs, alveoli
at the level of ________, there is no longer any ________ or ________
all that remain is a thin layer of ________ and ________
the most conspicuous feature is the prescence of numerous ______ adjacent to them
the _________ plus the _________ make the respiratory ________
alveoli cartilage, smooth muscle epithelium, connective tissue capillaries alveolar wall, capillary wall, membrane
_____ surface of the lung: the surface adjacent to the thoracic wall
costal
