Author Archives: Anonymous
Neuron Action Potential – Part 2 Take a look again at the gr…
Neuron Action Potential – Part 2 Take a look again at the graph of an action potential on the membrane of a neuron (given below). Describe what is happening in the voltage-gated sodium channels and the voltage-gated potassium channels during the point in time on your graph 1) when threshold is reached, 2) during the depolarization phase, 3) during the repolarization phase, and 4) during the hyperpolarization phase. What are the two ion channels doing at each of these 4 points/phases? Tip: remember that sodium channels have two gates and three states, whereas potassium channels have one gate and two states.
Read DetailsIn the micturition reflex, high volumes of urine stretch the…
In the micturition reflex, high volumes of urine stretch the wall of the bladder. This excites interneurons in the sacral region of the spinal cord. These interneurons cause pelvic splanchnic motor neurons to fire. The bladder contracts and pushes urine against the opening to the urethra. Check the boxes that identify the type(s) of reflex represented by the micturition reflex. Check all that apply (i.e., there could be more than one right answer).
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