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the respiratory system
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main facts and functions of the resp system?
carrys air to lungs
adds oxygen to blood
removes carbondioxide
maintains acid/base (ph) balance in the blood
provides vocalization
it assits in regulating body temp
list the 6 main organs ans structures of the resp system
nose and nasal cavity
pharynx
larynx
trachea
bronchi
lungs
what are the 2 accesory structures in the resp system?
thorax (chest cavity)
diaphragm
main function of the nose and nasal cavity
provide external entrence for air into the respiratory system and the exit for carbon dioxide
main function of pharynx (throat)
passageway for air and food
main function of layrnx (voicebox)
main roll creates sound
air passing through the epiglottis during expiration causes virbations of the vocal cords which produces sound
main functions of the trachea (windpipe)
long tube formed of smooth muscle and lined with mucous membrane
held open with cartialginious c shaped rings embedded in muscle tissue
provides a passageway of air to lungs
main facts on bronchi
two primary bronchi right and left which branch of trachea and into lungs
main functions of the lungs
primary structures for resp system
cone shaped comprised of 300 tiny air sacs called alveoli
alveoli cause lungs to be sponge like and porous
lungs are encased in serous membranes called the visceral pleura
slides easily against the parietal pleura so there is little firction between organs during respiration
lungs are elastic
functions of thorax
divided into three parts
right pleurl cavity
left pleural cavity
mediastinum
thorax is lined with pariental pleura
the membrane provides lubrication for the surfaces of organs during respiration
main functions of diaphragm
dome shaped muscle that seperates thoratic and abdominal cavitys
attatched to lumbar vertebra, lower ribs and sternum
chief muscle for respiration
what is the process of respiration?
inspiration
experation
rest
Author
eleanorgwenmurtagh
ID
189721
Card Set
the respiratory system
Description
midterm prep
Updated
2012-12-16T04:44:59Z
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