Why is the flow of signals in a synapse from axonal end of one neuron to dendritic end of another neuron but not the reverse?
One neuron sends information to another target nerve cell in the form of electrical or chemical signals. Electrical is where flow or exchange if ions occurs and in chemical synapse, they communicate using chemical messengers called hormones, or neurotransmitters. Sensory nerves carry nerve impulses to the axon terminal which releases chemical messengers called neurotransmitters, and then they passed through the synaptic cleft to reach the dendrite part of another neuron. And, finally these neurotransmitters goes to muscles, glands etc. to carry forward their actions.
A nerve impulse can flow only in one direction in a reflex arc (afferent to efferent neuron) because the nerve impulse can cross the synapse only in the one way or direction. Stimulation of an effector cannot produce a reflex arc response in the receptor. Thus the flow of signals in a synapse will be from axonal end of one neuron to another neuron.
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One neuron sends information to another target nerve cell in the form of electrical or chemical signals. Electrical is where flow or exchange if ions occurs and in chemical synapse, they communicate using chemical messen...
Step-by-step explanation:
• One neuron sends information to another target nerve cell in the form of electrical or chemical signals
• Electrical is where flow or exchange if ions occurs and in chemical synapse, they communicate using chemical messengers called hormones, or neurotransmitters
• Sensory nerves carry nerve impulses to the axon terminal which releases chemical messengers called neurotransmitters, and then they passed through the synaptic cleft to reach the dendrite part of another neuron
• And, finally these neurotransmitters goes to muscles, glands etc
• to carry forward their actions
Students often lose marks by skipping steps, writing incomplete explanations, or misunderstanding keywords used in the question.
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