Cell Membrane Transport

Lipophilichydrophobic classification by solubility

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Unformatted text preview: active transport Basolateral facilitated diffusion Glucose transported across cell Transport Across Epithelium: Water Transport Across 2 Membranes The osmotic drag happens. Increases the solute concentration in the interstitial fluid will drag water from the lumen in order to equalize the osmotic concentration. Clinical Connection: Cystic Fibrosis Thick respiratory mucus Defect in the Cl- transport membrane In CF, there is less osmotic drag as the chloride doesn’t exit the epithelial cell and so neither does the sodium. Lecture 3: Chemical Messengers and Signaling Intercellular Communication: How cells talk to each other General Mechanisms: Directs: gap junctions Indirect: chemical messengers Composed of membrane proteins Link cytosol of two adjacent cells Particle movement between cells acts as signal Communication is direct Common in smooth and cardiac muscle Messenger produced by source cell Messenger transported to target Target cell receptors for messenger Binding to receptor triggers target response Communication is indirect Chemical Messengers Substances which have singaling functions Classification by function Classificat...
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