EMBRYOLOGY
NERVOUS SYSTEM
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Involuntary and complementary
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Involuntary and Voluntary
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Sensory and Voluntary
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Sensory and Motor
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Detailed explanation-1: -The upper motor neurons originate in the cerebral cortex and travel down to the brain stem or spinal cord, while the lower motor neurons begin in the spinal cord and go on to innervate muscles and glands throughout the body.
Detailed explanation-2: -There are three broad types of lower motor neurons: somatic motor neurons, special visceral efferent (branchial) motor neurons, and general visceral motor neurons. Somatic motor neurons are in the brainstem and further divide into three categories: alpha, beta, and gamma.
Detailed explanation-3: -Answer and Explanation: The names of the two motor neurons of the autonomic nervous system (ANS) are: Preganglionic neuron which is found in the spinal cord or brain stem, Postganglionic neuron which is found in structures called ganglia.
Detailed explanation-4: -Definition: Motor neurons that develop several hours later than primary motoneurons and sprout axons several hours after the primary motor growth cones have extended to the periphery. They have smaller cell bodies and are located more ventrally and laterally in the spinal cord than primary motoneurons.