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HAP Resp & Digest

Purpose of Respiratory System GAS EXCHANGE blood & external environment (O2=CO2)
(Respiratory) Passageways: purify, warm, and humidify incoming air
Pulmonary Ventilation moving air in and out of lungs
Inspiration flow of air INTO the lung
Expiration flow of air OUT of the lung
Vacuum Suction Increase in intrapulmonary volume created by contraction of DIaphragm and Thoracic muscles
Nose Only External visible part of respiratory system
Nostrils Air ==> Nostrils (external nares)==> Nasal Cavity
Nasal Cavity Nostrils ==> divided by Nasal Septum/ Lined with respiratory mucosa and hairs (moisten air, trap foreign particles) ==> Pharynx
Conchae Laterall wall projections of the Nasal Cavity increasing surface area and turbulence
Paranasal Sinuses Lighten Skull, Resonance chambers for speech, Mucus drain into Nasal Cavity
Throat Nasal Cavity ==> PHARYNX==> Larynx Naso-, Oro-, Laryngo-
Voicebox Pharynx ==> LARYNX ==> Trachea Epiglottis Vocal Chords Glottis
Epiglottis routes food to larynx and air to trachea
Vocal Chords Vibrate with expelled air to create sound Glottis is opening between chords
Glottis opening between Vocal Chords
Windpipe Larynx==> TRACHEA ==> bronchi Lined with ciliated mucosa
Ciliated Mucosa Found in Trachea beats continuously in opposite direction of air Expels dirty mucus away from lungs
Primary Bronchi Division of trachea into two tubes that divide more and more, becoming smaller and smaller, ending in the terminal bronchioles
Lungs most of thoracic cavity //right lung 3 lobes // left lung 2 lobes //Covered - pulmonary (visceral) pleura //Parietal Pleura lines walls //Pleural fluids fill area between, allow gliding
Pulmonary (visceral) pleura Covers the lungs
Parietal Pleural Lines thoracic cavity
Pleural fluids fill interim between lungs and parietal pleura, allow gliding
Alveoli Gas exchange through diffusion through respiratory membrane // Macrophages protect // ┬┤Coated by stabilising surfactant keeping them form collapsing
External Respiration Gas exchange between alveoli and blood vessels
Respiratory Gas Transport Hemoglobin takes O2 by binding hem-protein // Gas transport via bloodstream
Internal respriation Gas exchange between blood and tissue cells
Created by: MaxSpieler