Anion channel Watery saline layer Paracellular diffusion of Nat, drawn by electrochemical gradient Mucus layer AINWAT CPTINELIUM (a) Epithelial cells lining the airways and submucosal glands secrete saline and mucus. (b) Cilia move the mucus layer toward the pharynx, removing trapped pathogens and particulate matter. Dust particle Mucus movement Ciliated epithelium Mucus layer Lumen of airway Submucosal gland Paracellular diffusion of H2O, drawn by concentration gradient Secondary active transport of Cl Primary active transport of Na+ and K+ (c) One model of saline secretion by airway epithelial cells Saline layer in lumen Respiratory epithelial Nat H₂O Amin cells Facilitated diffusion of Cl ECF ATP Na Na 20 k Cilla Goblet cell secretes mucus Nucleus of columnar epithelial cell Basement membrane
Anion channel Watery saline layer Paracellular diffusion of Nat, drawn by electrochemical gradient Mucus layer AINWAT CPTINELIUM (a) Epithelial cells lining the airways and submucosal glands secrete saline and mucus. (b) Cilia move the mucus layer toward the pharynx, removing trapped pathogens and particulate matter. Dust particle Mucus movement Ciliated epithelium Mucus layer Lumen of airway Submucosal gland Paracellular diffusion of H2O, drawn by concentration gradient Secondary active transport of Cl Primary active transport of Na+ and K+ (c) One model of saline secretion by airway epithelial cells Saline layer in lumen Respiratory epithelial Nat H₂O Amin cells Facilitated diffusion of Cl ECF ATP Na Na 20 k Cilla Goblet cell secretes mucus Nucleus of columnar epithelial cell Basement membrane
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:Anion channel
Watery saline layer
Paracellular diffusion of
Nat, drawn by
electrochemical gradient
Mucus layer
AINWAT CPTINELIUM
(a) Epithelial cells lining the airways and submucosal
glands secrete saline and mucus.
(b) Cilia move the mucus layer toward the pharynx, removing trapped
pathogens and particulate matter.
Dust particle
Mucus movement
Ciliated
epithelium
Mucus layer
Lumen of airway
Submucosal
gland
Paracellular diffusion of
H2O, drawn by
concentration gradient
Secondary active transport
of Cl
Primary active transport of
Na+ and K+
(c) One model of saline secretion by airway epithelial cells
Saline layer
in lumen
Respiratory
epithelial
Nat H₂O
Amin
cells
Facilitated diffusion of Cl
ECF
ATP
Na
Na 20 k
Cilla
Goblet cell
secretes mucus
Nucleus of
columnar
epithelial cell
Basement
membrane
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