Biology

Biology, 23.09.2019 18:00, maciemarklin79981

When a neuron carries the electrical potential of millivolts, it is in the state called

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Biology, 23.06.2019 23:30, anthonycortez4993

The nervous system runs off of electrical current generated through ion concentration exchange across the neuron membrane. neurons remain in a resting potential state until stimulated by some form of energy. then the stimulation may generate an action potential "spike" within the cell, if the stimulus is strong enough. in no more than four sentences, tell and describe the 3 components of an action potential within neuron.

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Biology, 06.07.2019 07:00, asndjsd9397

When a neuron is excited by other neutrons but not enough to fire even though electrical charge across membrane changes, this reflects: a) a polarized neuron b) weak action potential c) neuron depolarized but not enough to fire. d) neuron hyperpolarized but not enough to fire.

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Medicine, 24.07.2019 21:10, bcampos

How do neurons communicate with each other? a) when the action potential gets to the end of one neurons, the electrical gradient change directly causes depolarization of the next neuron. b) the end of one neurons releases neurotransmitters that influence the membrane potential of the next neuron. c) neurons are directly touching and transmits electrical signals the same way the action potential moves down the axon. d) neurons communicate using hormones.

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Biology, 02.08.2019 03:20, mybeats12341234

Pufferfish (fugu) are a delicacy in japan, but must be cleaned very carefully as their liver contains tetrodotoxin which blocks voltage-gated na+ channels. imagine you are testing for the presence of this toxin using a neuron in a dish. you apply an electrical stimulus to the neuron that should produce an action potential. what will you observe if tetrodotoxin levels are high enough to block the neuron's voltage-gated na+ channels? a. the neuron will exhibit a slow depolarization even before the stimulus is applied, followed by a normal action potential. b. the neuron will exhibit a slow hyperpolarization even before the stimulus is applied. c. the neuron will show a normal resting potential, but will not exhibit depolarization when the stimulus is applied. d. the neuron will exhibit rapid depolarization, but will not repolarize. e. the neuron will depolarize normally, but then become hyperpolarized such that the membrane potential is much lower than usual.

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