Question

Discuss how each step of an action potential compares between a sensory neuron, interneuron, and motor neuron.

Answer 1

sensory neurons carry signals from the outer parts of your body (periphery) in to the central nervous system .

motor neurons carry signals from the Central nervous system to the outer parts (muscle ,skin, galnds) of your body.

interneurons connect various neurons within the brain and spinal cord.

motor neuron

1. long axon.
2. No receptor
3. Cell body terminal and has dendrites many short dendrons.

sensory neuron

1. short axon
2. Receptor
3. Cell body at the side; no dendrites
4. One long dendron.

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​​​​​​​inter neuron:-

• interneurons, carry information between motor, and sensory neurons.
• Only found in brain,spinal cord and eye.
• Easy to recognize- as above they have short axons.
• Also called as relay neuron or local circuit neuron.

sensory neuron:-

• sensory neuron also called as uni polar neuron, bcoz dendrites and axon terminal aries from same axis.
• Also called AFFERENT neurons.
• Transmit impulses from the receptors in our sense organs to the brain.
• In the peripheral nervous system its callee pseudounipolar neuron.
• Dendrities and axon terminal arises from same stem.

motor neuron:-

• If its axon terminal join with each other neuron if forms synapse, but if join with muscles or glands it form motor nerve emd plate.
• Largest nerve cell in nervous system.also called multipolar neuron because numerous densities projects from cell body. In multiple direction.
• Deals with outgoing messages from the brain/ spinal cord to act upon the outside world.
• They have very lomg axons.

action potential compression:-

• motor behaviors are precisely controlled by the integration of snesory and motor system in the central nervous system.
• Proprioceprive sensory neurons,key components of the sensory system., Are located in the dorsal root gangila and project axons both centrally to the spinal cord and peripherally to muscle and tendons, communicating peripheral information about the body to the cns.
• Sensory neurons inderictaly via spinal interneurons, wheareas axons form both direct and indirect connection with motor neurons.
• ​​​​​​the activity of motor neurons, which deliver the final instructions to muscles for all motor behaviors, is coordinated,
• in part, by proprioceptive sensory neuronsz wich convey peripheral information about muscles contractions to motor neurons as a feed back system to generate appropriate motor response.

Here, is the image of the connection between this all three neurons.

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This is the bridge between the neuron and the action potential will generate.and the main part is the circuit of muscle and neuron.