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BIO 116 RESPIRATORY SYSTEM
voicebox. sits above trachea
pair of elastic ligaments on either side of the larynx wall. air forced between them causes chords to vibrate=sound.
gap between vocal chords that opens to larynx
tubelike branchings of the trachea that lead to lungs
Condition where mucus accumulates airways and particles get trapped.
cone shaped organs seperated from eachother by the heart
left lung has__ lobes
Right lung has __ lobes
muscle between the ribs which help ribs move when lungs expand/contract
thin sheet of muscle that divides the thoracic and abdominal cavaties, rests against lower lungs and aids in inhaling/exhaling
thin double membrane sacs with fluid between layers. encloses the lungs.
bronchi narrow and branch off forming "trees". inside each lung, narrow branching pathways.
tiny air sacs. gas exhanged by diffusion here through blood capillaries. Millions of Alveoli in each lung.
when refeering to the respiratory system. process that delivers oxygen to cells of body and removes carbon dioxide waste.
a thin, moist epithelium. gases must cross it to enter/leave the body. gases must be dissolved in fluid to get across
one inhalation + one expiration= one respiratory cycle
collapsed lung. when air enters the pleural sacs. lungs cant expand normally.
normal breath, 1/2 liter of air enters/leaves.
maximum amount of air that can be breathed out after you inhale as deeply as you can.
amount of air that is always in lungs. they never empty completely.
movement of oxygen from alveoli into blood to get through heart and out to tissues
oxygen moves out from blood supply into tissues and carbon dioxide is taken from tissues out throuh blood supply
two layer membrane between the walls of lung capillaries and alveoli; blood gases diffuse across it.
located at brainstem, control center for respiration