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boyakko [2]
3 years ago
9

Why does the action potential propagate in one direction

Medicine
2 answers:
almond37 [142]3 years ago
5 0

Answer:

This is achieved because the sodium channels have a refractory period following activation, during which they cannot open again. This ensures that the action potential is propagated in a specific direction along the axon.

Alex787 [66]3 years ago
3 0
Because the sodium channels have a refractory period following activation, during which they cannot open again. This ensures that the action potential is propagated in a specific direction along the axon. Sodium (Na+) ions flow in, potassium (K+) ions flow out, and we get an electrochemical gradient flowing down the length of the cell. ... Therefore, nerve impulses cannot travel in the opposite direction, because nerve cells only have neurotransmitter storage vesicles going one way, and receptors in one place.
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APR Cardiovascular Practice
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Which of these conveys information from sensory receptors in the head, body wall and limbs towards the CNS:
Sergeu [11.5K]

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The correct answer will be option D- Sensory (afferent) neurons

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Afferent neurons are the sensory neurons which transmit the impulse from the sensory receptors of the body to the central nervous system- brain or spinal cord.

The afferent neuron receives the stimulus which generates the impulse. this impulse travels down to the interneuron where the stimulus is interpreted and response is sent through efferent neuron or motor neuron to muscle  

Thus, option D- Sensory (afferent) neurons are the correct answer.

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