Endocytosis exocytosis e endocytosis exocytosis

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Unformatted text preview: osome lysosome • Phagocytes Phagocytes Figure 5-20 E. Endocytosis & Exocytosis: E. Endocytosis Exocytosis VacuoleTransport VacuoleTransport • ENDOCYTOSIS: ENDOCYTOSIS: – Pinocytosis: non-selective; small particles – Phagocytosis: non-selective; large selective; particles particles – Receptor mediated Endocytosis: Receptor Endocytosis • specific substrate (ligand) only 3 2/2/2010 Endocytosis & Exocytosis: Exocytosis Transport & Membrane Cycling Transport Figure 5-21: 21: ReceptorReceptor mediated mediated endocytosis endocytosis and exocytosis and exocytosis F. Transepithelial & F. Transepithelial Transcytosis Transcytosis 1. Cross two membranes a) Apical (lumenal side) b) Basolateral (ECF side) 2. Absorption: lumen to ECF 3. Secretion: ECF to ECF lumen/surface lumen/surface 4 2/2/2010 1. Transepithelial Transport 1. Transepithelial Figure 5-26: Transepithelial transport of glucose 26: Transepithelial Figure 5-22 2. Transcytosis 2. Transcytosis Figure 5-24: Transcytosis across the capillary endothelium 24: Transcytosis 5 2/2/2010 Distribution of Water and Solutes Distribution in the Body Compartments in • About 60% of body About weight is water weight • 67% water = 67% intracellular intracellular • 33% water = 33% extracellular extracellular – 25% = interstitial – 8% = plasma • % varies slightly with varies gender and age...
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This document was uploaded on 03/18/2010.

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