FAST REVISION
Physiology
The absence of the blood-brain barrier in circumventricular organs allows for the unimpeded movement of substances between the blood and the CSF, which is crucial for the regulation of various physiological processes, including osmoregulation.
Physiology
The sodium-potassium-2-chloride (Na+-K+-2Cl-) cotransporter in the thick ascending limb of the loop of Henle is responsible for reabsorbing sodium and chloride ions from the tubular fluid into the blood. This process helps in the maintenance of os
Radiology
In an X-ray tube, the filament (cathode) is heated to produce electrons through a process called thermionic emission. This heating is accomplished by a step-down low voltage transformer, which reduces the high voltage from the power supply to a lower
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