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What is 1 + 3?
13 respiratory system
which primary bronchi is larger in diameter?
which primary bronchi is more horizontal?
where does air enter the nasal cavity of the respiratory system?
warm, filter, humidify
what are the three functions of the nasal cavity mucosa
mucous membrane-lined cavities
what is the function of the sinuses?
make the skull less heavy and act as resonance chambers for speech
known as the throat
clusters of lymphatic tissue
the voice box
smallest conducting respiratory passageways
separates the oral and nasal cavities
fleshy lobes in the nasal cavity which increase its surface area
lumen of the larynx
pleural layer covering the lungs
in healthy lungs it is always lower than the atmosphere pressure
pressure of air outside the body
as it decreases air flows into the passageways of the lungs
as it increase over atomoshpere pressure, air flows out of the lungs
if this pressure becomes equal to the atmospheric pressure, the lungs will collapse
rises well over atmospheric pressure during a forceful cough
smooth out the basic rhythm of breathing set by the Medulla
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
lack of cessation of breathing
normal breathing in terms of rate and depth
labored breathing or air hunger
chronic oxygen deficiency
condition characterized by fibrosis of the lungs and an increase in size of the alveolar chambers
condition characterized by increased mucus production which clogs respiratory passageways and promotes coughing
respiratory passageways narrowed by bronchiolar spasms
chronic bronchitis and emphysema
together called COPD
incidence strongly associated with cigarette smoking: outlook is poor
infection spread by airborne bacteria: a recent alarming increase in drug users and AID's victims