SEM of Red Blood Cells

SEM of Red Blood Cells

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Credit: SCOTT CAMAZINE/SCIENCE PHOTO LIBRARY

Caption: Scanning electron micrograph (SEM) of red blood cells found enmeshed in a fibrinous matrix on the luminal surface of an indwelling vascular catheter; Magnified 2849x. In this instance, the indwelling catheter was a tube that was left in place creating a patent portal directly into a blood vessel. Note the biconcave cytomorphologic shape of each erythrocyte, which increases the surface area of these hemoglobin-filled cells, thereby, promoting a greater degree of gas exchange. In their adult phase, these cells possess no nucleus. What appears to be irregularly-shaped chunks of debris, are actually fibrin clumps, which when inside the living organism, functions as a key component in the process of blood clot formation, acting to entrap the red blood cells in a mesh-like latticework of proteinaceous strands, thereby, stabilizing and strengthening the clot, in much the same way as rebar acts to strengthen, and reinforce cement.

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Keywords: anatomy, arteriosclerotic vascular disease, artery, asvd, atherosclerosis, attack, biology, blockage, blood, blood cll, cardiovascular, cascade, catheter, cell, clot, clots, clotting, coagulate, coagulated, coagulation, coagulum, cytology, disease, electron, emboli, embolus, erythrocyte, fiber, fibre, fibrin, fibrinogen, fibrinous, hemostasis, histologic, histological, histology, human, illness, infarct, infarction, matrix, medical, micrograph, occlusion, person, physiology, rbc, red, red blood cell, scanning, scanning electron microscope, scanning electron microscopy, science, sem, vascular, vessel

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