Ch 12 PP Terms Flashcards
(38 cards)
respiratory system main functions
provide oxygen to cells and eliminate carbon dioxide
external gas exchange
between atmosphere and blood
internal gas exchange
between blood and tissues
pharynx
throat, divided into three regions
larynx
contains vocal folds
trachea
tube at anterior of throat, divides into L and R bronchus
right lung
larger, has three lobes
left lung
smaller, has two lobes
pleura
two layered membrane that covers the lungs
parietal pleura
outer layer of pleura, attached to the thoracic wall
visceral pleura
inner layer of pleura, attached to the lungs
inspiration
inhale; decrease in pressure
expiration
exhale, increase in pressure
alveoli
endpoint of respiratory systems where gases are exchanged between blood and atmosphere
bronchiole
smaller subdivisions of the bronchial tubes
bronchus
one of the larger air passageways in the lungth
diaphragm
dome-shaped muscle under the lungs that flatters during inspiration
larynx
enlarged upper end of the trachea containing the vocal cords
lung
spongy organ of respiration in the thorax
mediastinum
the space between the lungs together with the organs contained in this space
nose
organ used for breathing and smell receptors
oxygen (o2)
gas needed by cells to release energy from food during metabolism
pharynx
throat; passage for food and air entering body
sputum
substance released by coughing or clearing the throat