13 respiratory system

34 terms by nyadw

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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

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