Drug Name Fluoxetine

As a result, a concentrated urine enters the renal pelvis. Na+ transport through the tubular cells basically occurs in similar fashion in all segments of the nephron. The intracellular concentration of Na+ is significantly below that in primary urine. This concentration gradient is the driving force for entry of Na+ into the cytosol of tubular cells.
The concentration of local anesthetic at the site of action is, therefore, determined by the speed of penetration into the endoneurium and the speed of diffusion into the capillary blood.

 

The potential consequences are (A, bottom): 1) a reduction in the velocity of depolarization and a decrease in the speed of impulse propagation; aberrant impulse propagation is impeded. 2) Depolarization is entirely absent; pathological impulse generation, e.g., in the marginal zone of an infarction, is suppressed.
Pain stimuli are detected by physiological receptors (sensors, nociceptors) least differentiated morphologically, viz. , free nerve endings. The body of the bipolar afferent first-order neuron lies in a dorsal root ganglion. Nociceptive impulses are conducted via unmyelinated (C-fibers, conduction velocity 0. 2–2. 0 m/s) and myelinated axons (A?-fibers, 5–30 m/s).