1. Action potentials are generated in a region called the _______ which includes the axon hillock and the initial segment of the axon. 2.According to the all-or-nothing principle a.once the electrical impulse reaches a certain level of intensity (its threshold), it fires and moves all the way down the axon without losing any intensity. b.the amount of time a neuron must “rest” in between firing episodes is stable. c.as a person ages, his or her neurological system slows down and the intensity of neural impulses decreases significantly. d.if all the neurons in a network are not integrated, the “message” carried by the neurons will be lost.

Q: 1. When a neuron is not generating an action potential, its membrane (the neurolemma) has a resting…

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A: When the membrane potential of a given cell location rapidly rises and falls, an action potential…

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Q: Schwann cells are a type of glial cell found in the nervous system. In addition to the conduction of…

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Q: increases the probability of producing an action potential, where a ________ decreases the…

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Q: 1

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A: Answer is a.) a neuron reaches threshold potential.

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Q: Post synaptic neurons membrane potentials

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Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.