Motor neurons?

if they don't functioning adaaquetly what if any problems can arise
Answer:
The nervous system is a very complicated thing. Simply, there are two main types of motor neurons - upper motor neurons and lower motor neurons. Lower motor neurons are the ones that travel from the spinal cord to the muscle and upper motor neurons are the ones in the brain and down into the spinal cord.

If upper motor neurons are injured the patient will have spasticity, which is basically stiffness or a constant cramping, as well as hyperreflexia (exaggerated reflexes - kinda like on a cartoon when someone taps the knee and gets kicked in the face), and loss of the ability to control the effected muscles. This kind of injury most often occurs with spinal cord injuries or strokes in the part of the brain that cause movement.

A lower motor neuron injury results in flaccid paralysis (the muscle is just limp and doesn't work). This is pretty much the opposite of spasticity. The patient will also have diminished/absent reflexes. This is most common with injuries to peripheral nerves or various diseases such as myasthenia gravis.

Patients can also have combinations of the two, with Lou Gehrig's disease being the classic example (also called ALS, or amyotropic lateral sclerosis). This is a simplified explanation and for all the information to really make sense you have to do some reading about how the motor pathways of the nervous system work and how they're laid out. A good book to use is called Neuroscience and the author's name is Purves.

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go onto a health website, or or wikipedia!

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neurons specialise in transmiting information to muscles, glandes, etc. The first kind of problem that could occur , should these neurons malfunction, is of course a disruption or complete failure of the organs they were previously linked to.

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hi, heres some info, hope you find what you need :)
http://www.ninds.nih.gov/disorders/motor...

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Inability to control muscle movement. This can manifest in a large variety of problems, depending on the particular set of neurons having the problem, such as difficulty walking, eating, speaking, breathing, and heart irregularities.

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motor neurones are the part of your nervous system, which sends the signal for the co-ordinator to the effector

so if there is a problem with them some reflex reactions won't work

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Motor neurons are stimulated for bodily movements. If they are not functioning properly they can cause weakness in the area that it innervates, or, if they are over-stimulate, (another way that they are not functioning adequately) they may cause unwanted movements such as ticks, spasms and contractions where it is not desired.

Their effects/malfunctions depends largely on what they innervate and other interactions associated with the said motor neurons, eg the course of the neuron, whether it has many innervations, it's origin and its terminal site/s.

Hope that helps.

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May I Suggest Looking Up ALS, Stroke, Motor Units, Oligodendrocytes (Sp?), Schawn cells, Cranial Motor Nerves vs Spinal Motor Nerves, Upper Motor Nerves Signs vs Lower Motor Nerve Signs, Fibrillation vs Fasciculation, Other Things, a Big Subject.

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EFFECTORS DONT GET MESSAGES AND THE BODY STOPS WORKING PROPERLY

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