Labels:baseball glove | book | bulletin board | cerebral cortex | door | earth | person | sky | streetlight | subarachnoid space OCR: Control of the micturation reflex bi higher brain centers Ascending pathways carry an increased frequency r of action potentials up the spinal cord to the brair when the urinar bladder becomes stretched Descending pathways carry action potentials to the sacral region of the spinal coro to inhibit the micturation reflex tonically and to stimulate the refle when stretch of the urinary bladder produ luces the conscious urge to urinate pue when one voluntarily chooses urinate Micturation reflex Urine in the urinary bladder stretches the bladder wall Brainstem Action potentials produced by the stretch receptors (blue line) are carried along pelvic nerves to the sacral region of the spinal core Action potentials are carried by the parasympathetic nerves (black line) relax the internal urinary sp ...
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