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FAST REVISION
Radiology
Crimp marks in a radiograph are due to sharp bending of the film.
Crimp marks are artifacts that appear as linear or curvilinear indentations on a
radiograph. They are typically caused by the film being sharply bent or folded
durin
Periodontics
After periodontal surgery, root sensitivity is primarily due to the exposure of dentin tubules (option 1). When the root surface is exposed, the dentin becomes sensitive to stimuli because the tubules can transmit sensations to the pulp.
Expo
Physiology
The primary mechanism for sodium reabsorption in the distal tubules and collecting ducts is sodium-hydrogen exchange, which occurs through the NHE3 transporter. This allows for the reclamation of sodium while maintaining the acid-base balance by e