Respiration 21

jennraq2u's version from 2015-10-08 05:09


Question Answer
Pulmonary ventilation (breathing) =air movedinto & out of lungs (inspiration/expiration)=gases Exc'd/refreshed contiually
External RespirationO2 diffuses from lungs 2 blood, CO2 diffues from blood to lungs
Transport of Respiratory Gases =O2 transported from lungs 2 body tissue cells/CO2 trans from tissue cells to lungs. Blood used as transport fluid
Internal RespirationO2 diffuses from blood to tissue cells, & CO2 diffuses from tissue to blood
respiratory zone =site of gas Ex'hg; composed of bronchioles, alveolar ducts, alveoli/mico structures
conducting zone =includes allother respiratory passageways=provide condiutis 4 air 2 reach gas ex'hg sites
olfactory mucosalines superior region of nasal cavity; smell receptors @ olfactory epithelium
respiratory mucosa (lines most of nasal cavity)pseudostratified ciliated columnar epithelium=goblet cells rest on lamina propia.
nasopharynyxpseduoostratified ciliated epithelum
pharyngil tonsil(adenoiods) traps & destroys pathogens entering nasopharynx in the air
Nasopharynx->Oropharynx tissue changepseudostratified columnar->more protective stratified squamous epithelium
laryngopharynxlined w/ stratified squamous epithelium
Larynxinfeirorly continous w/ trachea;Provide patent airway & act as switching mechanism route air/food into right place & voice production
laryngeal prominenceAdam's apple
epiglottiselastic cartilage/tastebuds; guardian of airways b/c during eating, larynx pulled up & epiglottis tips to cover low resp passages=keeps food out
tracheawindpipe (mucosa,submucosa & adventitia) layer of hyaline cartilage
submucosaseromucous glands/connective tissue
Heimlich Manueverair in victim lung is used to "pop" out obstructing piece of food in thier trachea
As Bronchi Tubes Shrink (Support structures change)Irregular cartilage plates replace cartilage rings until bronchioles; all tubes=elastic fibers
As Bronchi Tubes Shrink (Epithelium Type Changes)thins from pseudostratified columnar 2 columnar & -.>cuboidal in terminal bronchioles (lack of cilia/mucus)
As Bronchi Tubes SHrink (Amount of Smooth Muscles Incr)As passageways b/c smaller; layer of circular smooth muscle@bronchioles+lack of cartilage=Resistance
alveolar ductssmooth muscle cells/ connective tissue fibers/ & outpoceting alveoli
alveoliindividual (grape-like) sites of gas ex'g; walls=squamous epithelial cells=type 1 alveolar cells( 1Fine Elastic Fibers surround/2Alveolar Pores/3Aveolar Macrophages)
respiratory membraneblood air barrier that has blood flowinng past on 1 side & gas on the other. Gas ex'g=simple diffusion
Type II alveolar cellscuboidal; secrete surfactant/antimicrobial proteins
hiliumpulmonary/systemic BV/bronchi/lymph vessels & nerves enter & leave lungs
stromaelastic connective tissue (mattres of lung tissue)
pulmonary arteriesdelivers systemic venous blood to be oxygenated in the lungs
pulmonary veinssend fresh oxygenated blood from respiratory zone of lungs 2 heart
bronchial arteriesprovide oxygenated systeic blood 2 lung tissue. Come from Aorta->hilium->branching bronchi;hi pressure/low vol of O2 blood 2 all lung except alveoli
atmospheric pressurethe pressure exerted by air (gases) surrounding the body.
intrapulmonary pressuepressure in alveoli; rises & falls w/ phases of breathing; But always equalizes w/ atmospheric pressure eventually
intrapleural pressureflucutautes w/ breathing ; Always about 4 Hg less than intralveolar pressure; Intrapleural Pressure is always Neg r/t intrapulmonary pressure