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34 terms

13 respiratory system

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right
which primary bronchi is larger in diameter?
left
which primary bronchi is more horizontal?
nostrils
where does air enter the nasal cavity of the respiratory system?
warm, filter, humidify
what are the three functions of the nasal cavity mucosa
sinuses
mucous membrane-lined cavities
what is the function of the sinuses?
make the skull less heavy and act as resonance chambers for speech
pharynx
known as the throat
tonsils
clusters of lymphatic tissue
larynx
the voice box
bronchioles
smallest conducting respiratory passageways
palate
separates the oral and nasal cavities
conchae
fleshy lobes in the nasal cavity which increase its surface area
glottis
lumen of the larynx
phrenic nerve
pleural layer covering the lungs
intrapleural pressure
in healthy lungs it is always lower than the atmosphere pressure
atmospheric pressure
pressure of air outside the body
intrapulmonary pressure
as it decreases air flows into the passageways of the lungs
intrapulmonary pressure
as it increase over atomoshpere pressure, air flows out of the lungs
intrapleural pressure
if this pressure becomes equal to the atmospheric pressure, the lungs will collapse
intrapulmonary pressure
rises well over atmospheric pressure during a forceful cough
pons center
smooth out the basic rhythm of breathing set by the Medulla
inspiratory center
respiratory control center in the medulla
chemoreceptors in the aortic and carotid bodies
respond to over inflation of the lungs
intercostal and phrenic
nerves that carry activating impulses to the muscles of inspiration
apnea
lack of cessation of breathing
eurpnea
normal breathing in terms of rate and depth
dyspnea
labored breathing or air hunger
hypoxia
chronic oxygen deficiency
emphysema
condition characterized by fibrosis of the lungs and an increase in size of the alveolar chambers
chronic bronchitis
condition characterized by increased mucus production which clogs respiratory passageways and promotes coughing
asthma
respiratory passageways narrowed by bronchiolar spasms
chronic bronchitis and emphysema
together called COPD
lung cancer
incidence strongly associated with cigarette smoking: outlook is poor
tuberculosis
infection spread by airborne bacteria: a recent alarming increase in drug users and AID's victims