helps prevent the alveoli from collapsing

functions of the nose include

filtering the air, warming the air, humidifying the air, and acting as a resonating chamber in speech

air moves into the lungs because

the gas pressure in the lungs is less than the outside pressure

air moves out of the lungs because

the volume of the lungs decrease with expiration

when the diaphragm and the external intercostal muscles contract

the volume of the thoracic cavity increase

pulmonary ventilation refers to

the movement of air into and out of the lungs

inspiration involves muscular contraction and expiration is passive

harry sufferes from cystic fibrosis and frequently has periods where he can hardly breathe. he problem is probably the result of

this secretions that exceed the ability of the respiratory tract to remove them

in emphysema, the alveoli break down ... you would expect a person who suffers from this to have

increased dead air space, decreased vital capacity, elevated PCO2 in the blood, and increased anteroposterior diameter of the thorax

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CARLA 16

Question	Answer
Air entering the body is filtered, warmed, and humidified by	The upper respiratory tract
Surfactant	helps prevent the alveoli from collapsing
functions of the nose include	filtering the air, warming the air, humidifying the air, and acting as a resonating chamber in speech
the actual sites of gas exchange with in the lungs are	alveoli
air moves into the lungs because	the gas pressure in the lungs is less than the outside pressure
air moves out of the lungs because	the volume of the lungs decrease with expiration
expiratory movements are produced by contraction of the	internal intercostals
when the diaphragm and the external intercostal muscles contract	the volume of the thoracic cavity increase
pulmonary ventilation refers to	the movement of air into and out of the lungs
most of the oxygen transported by the blood is	bound to hemoglobin
Most of the carbon dioxide in the blood is transported as	bicarbonate ions
the most important chemical regulator of respiration is	carbon dioxide
a 10% increase in the level of carbon dioxide in the blood will	increase the rate of breathing
in quiet breathing	inspiration involves muscular contraction and expiration is passive
if a student inhales deeply as possible and then blows out air until he cannot exhale anymore, the amount of air that he expelled would be	the vital capacity
Which if the following factors would increase the amount of oxygen discharge by hemoglobin to peripheral tissue	decrease in pH
when the diaphragm and the external intercostal muscles contract	inerpleural pressure decreases
damage to the surfactant cells of the lungs would result in	alveolar collapse
harry sufferes from cystic fibrosis and frequently has periods where he can hardly breathe. he problem is probably the result of	this secretions that exceed the ability of the respiratory tract to remove them
in emphysema, the alveoli break down ... you would expect a person who suffers from this to have	increased dead air space, decreased vital capacity, elevated PCO2 in the blood, and increased anteroposterior diameter of the thorax

Created by: aimee.burgos

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