Title |
Lung capillaries and air-blood barrier (rat) |
Creator |
Poels, Lambert G. |
Contributor |
Lambert G. Poels, PhD, UMC St Radboud Nijmegen; Paul H. K. Jap, PhD, UMC St Radboud Nijmegen |
Date |
2006-09-28 |
Description |
Electron microscopy. Two neighboring capillaries (C) and the alveolar spaces (A). The endothelial cell (1) of the upper capillary contains an organelle-rich cytoplasm, a centriole (2), contractile filaments (↓) and electron-dense membrane-bound granules, the so-called Weibel-Palade bodies. These bodies contain among others von Willebrand factor. The air-blood barrier (thin-walled area) is indicated by (↔) and formed by endothelial cell cytoplasm--common basal lamina−alveolar cell type I. Note the numerous pinocytotic vesicles in the endothelial cell of the capillary. Thin-walled areas are most favourable to gas exchange and alternate with thick-walled areas (not shown here) consisting of supporting fibers, extracellular matrix and cells of the alveolar framework that separate the alveolar epithelium from the capillaries. |
Subtype |
Image |
Format |
image/jpeg |
Rights |
http://creativecommons.org/licenses/by-nc-nd/2.5/ |
Collection |
Poja Histology Collection - Respiratory System Subset |
ARK |
ark:/87278/s69d00pd |
Setname |
ehsl_heal |
ID |
890679 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s69d00pd |