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Human Bio Chapt 11

Respiratory System

QuestionAnswer
Track through which air flows: Nasal/Oral Cavity, pharynx, larynx and esophagus, trachea, bronchus, bronchiole, alveolar duct, alveolar sac, alveoli (site of gas exchange)
Nasal Cavity purpose: filter out debris and moisten/warm air for respiration
epiglottis purpose: Prevents by closing off larynx
Larynx purpose: (voice box)- composed of cartilage rings, vocal chords suspended over the glottis and controlled by the skeletal muscle.
Pharynx purpose: (throat)- airway connecting nasal cavity and mouth with larynx, also connects with esophagus
Trachea purpose: Airway connecting larynx with two bronchi that lead into the lungs
Pleural Membrane purpose: double layer membrane which seperates lungs from organs; narrow fluid filled space between its two layers has roles in breathing
cilia and mucus secreting cells: remove debris from the air from the small branches of the bronchial tree
Inspiration: (inhalation)- diaphram contracts and flattens, intercostal muscles lift the rib cage
Vital capacity: the maximum volume of air that can move out of the lungs after you inhale as deeply possible.
External respiration: type of respiration where oxygen O2 moves from the lungs into the blood
Internal Respiration: type of respiration where oxygen moves from the blood to the tissues
To accomplis external respiration gasses must dissolve into fluid and cross: a thing layer of pulmonary surfactant, simple squamous epithelial cell of alveolar wall, internal space of basement membrane, simple squamous capillary, plasma, cell membrane of RBC
Created by: taylorvv
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