Cell Membrane & Specialization Lecture PDF
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Uploaded by SpeedyBarbizonSchool
Tanta University Faculty of Medicine
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Summary
This document covers the structure of cell membranes, focusing on their appearance under light and electron microscopes. It details how the cell membrane appears under high and low electron microscope magnification as well as the trilaminar appearance of the cell membrane.
Full Transcript
Cell membrane (Plasmalemma): * Light microscope (L/M): not visible. Very thin (7.5-10 nm). * Electron microscope (E/M): 1- Low magnification: single electron-dense (dark) thin line. 2- High magnification: two electron-dense lines separated by an electron-lucent (pale) intermediate zone → trilaminar...
Cell membrane (Plasmalemma): * Light microscope (L/M): not visible. Very thin (7.5-10 nm). * Electron microscope (E/M): 1- Low magnification: single electron-dense (dark) thin line. 2- High magnification: two electron-dense lines separated by an electron-lucent (pale) intermediate zone → trilaminar appearance. Describe EM appearance of cell membrane Trilaminar appearance
