Human Anatomy and Physiology II
Human Anatomy and Physiology II BIOL 2020
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Floy Quitzon III
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This 1 page Class Notes was uploaded by Floy Quitzon III on Wednesday September 23, 2015. The Class Notes belongs to BIOL 2020 at Middle Tennessee State University taught by Teresa Stegall-Faulk in Fall. Since its upload, it has received 10 views. For similar materials see /class/213211/biol-2020-middle-tennessee-state-university in Biology at Middle Tennessee State University.
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Date Created: 09/23/15
Biology 2020 rev spring ll Chapter 22 The Respiratory System Functions 0 Gas exchange a K r o ventilation breathing 39mogembnho o diffusion of 02 required for cellular QTP production across the respiratory membranes of the lungs into the circulation JLGW GF Ei39ftUA MZVSA L V a Q 0 i4 03359 0 diffusion of C02 metabolic waste out of the circulation across the respiratory membrane fer release by exhalation u Regulation of blood pH by eliminating C02 so Orw po 39 Sound production vocalization m w fine olfaction sense of smell Hi L I The respiratory system is generally divided into a conducting portion and a respiratory portion The 5 if structures of the conducting portion function in airflow filtering warming and humidifying inhaled air speech and olfaction The respiratory portion functions in gas exchange across the respiratory membranes Six 13 1Structures of the Wide begin with the nasal cavity and continue to the respiratory owe398 bronchioles of the lungs ms 2 N 5 a39nasa cavitymlium Ects as a filter that traps particles greater than about 5 microns i Sd b i lla membrane lined turbinate bones in the medial side of each nostril Increases the across which inspired air flows Warming and humidification of air begins here 5 bLg v CnLL Wmuah nabr CAL u39 c z e 4 u D D quot5 23 1r Qlt quotDryV 30 9 AM Haul woxmbvaw aJrL a w haw 0k e xe r IuXeb39t ii olfaction sensory fibers of the olfactory bulbs prcr gct through the cribifornla plate of the ethmoid uxe bone into the superior surface of the nasal cavrty emoreceptors detect molecules that are interpreted in brain centers as the sense of smell n b pharynx extends from the posterior nasal cavity to the area of the larynx old news c larynx incomplete rings of hyaline cartilage that house the vocal chords Its entry is protected by the epiglottis membrane coverd elastic cartilage W i vocal cords contraction of muscles in the larynx causes vocal cords to change shape Air crossing the vocal cords causes vibrations that produces sound vocalization When small muscles attached to the arytenoid cartilages contract the distance between the vocal chords widens or narrows to alter the pitch of vocalization c VALQ39C C M lt83e WAR One Hake er A Cronmpmke Ix It 2 d trachea about 5 inches in length and compcbsed of incomplete C shaped hyaline cartilage ringsi i lined with pseudostrati ed ciliated columnar epithelia interspersed with goblet cells Inspired air continues to be warmed and humidified Mucous secreted by the goblet cells traps inhaled t9 particles and the cilia beat rhythmically upward toward the pharynx and mouth to be expelled or SwaIIOWEd mohabub DVD Chg woh u bquot 5waburv39i b Quid ii smooth muscle below the epithelium and surrounding the hyaline cartilage rings is innervated by the sympaLthetic division of the ANS cow3 quotc3 VNM to rite iiiqcarina the site of bifurcation division of the trachea into the right and left primary bronchi QZ Physical stimulation of this site will cause a cough re ex1h 539 39 n r AA 5 5 iii A tgtr is ivqgaquot tr W 9 OngQ e
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