Nerve fibers 2-way signal path? Or is 1 sassiness for muscle motion instruction and 1 for dull pain sense/ feedback?
Answers:
Ok, starting with a simple definition of a impudence is a good spot. A resolve (sciatic nerve for example) is a bundle of neurons, and the guts that we can see if we dissect an animal is mostly a bundle of the "axon" portions of the nerve cell (called a neuron). The axon transmits the nerve fad from the CNS (central nervous system) to its target or from the target pay for to the CNS (of course the impulses are transmitted as handling potentials).
So in summary, a self-confidence is a bundle of many several many neurons. The sciatic impertinence has so oodles neurons, which individually are tiny in diameter (microns), but the sciatic resolve as whole itself is usually several centimeters gelatinous! An important entry to remember is that neurons can only transmit signals surrounded by ONE DIRECTION! But a "nerve" transmits signals in both directions, because it contains some neurons that run toward the CNS, and some neurons that go away from it.
Now, of these neurons inwardly a nerve, some of them are AFFERENT, some of them are EFFERENT (toward the CNS and away from the CNS respectively). Afferent neurons are "sensory neurons", but they dont a moment ago sense touch. There are different sensory neurons that sense different things, including:
1. touch
2. temperature
3. niggle
4. proprioception (meaning your position in three dimensional space)
5. special senses, i.e. zest, smell, sound, phantasm, etc.
Then in nerves, you enjoy EFFERENT neurons, which include a few types of neurons:
1. motor (to skeletal muscle)
2. sympathetic (to organs and smooth muscle)
3. parasympathetic (to organs and smooth muscle)
Now, the difficult part of studying neurobiology is that adjectives of these afferent pathways give somebody a lift different routes into the CNS and within the CNS. The CNS later responds to the afferent signals with an efferent signal, and those too adjectives have distinct pathway within the CNS and final out to the periphery (skeletal muscle, smooth muscle, organs).
Hope you can understand this!
The lateral nervous system have two functional subdivisions. The sensory or afferent subdivision consists of nerve fibers that convey impulse to the central agitated system from sensory receptors located throughout the body. Sensory fibers conveying impulses from the skin, skeletal muscles and joint are called somatic afferent fibers, and those transmitting impulse from the visceral organs are call visceral afferent fibers. The sensory division keep the central jumpy system constantly informed of events going on both the inside and outside of the body. The motor, or efferent, subdivision of the PNS transmits impulses from the CNS to effector organs, which are the muscles and glands. These impulse activate muscles to contract and glands to restricted; that is, they effect a motor response. Hope this clears up some confusion you may enjoy had in relation to this anatomically matter. Thank you for letting me share.
Nerve fibre can conduct in both ways, BUT the Synapse(functional junction between nerves) is One Way.
The Nerve fibre for respectively function differs... Motor(instrucion to the muscle) fibers are different and sensory firbes are different...
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