BRAIN
SPINAL CORD
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In the spinal cord, motor neuron cell bodies are located in
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Lamina I.
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Lamina II.
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Lamina V.
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Lamina IX
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Explanation:
Detailed explanation-1: -Somatic motor neurons. Somatic MNs are located in the Rexed lamina IX in the brainstem and the spinal cord and innervate skeletal muscles responsible for movements (Rexed, 1954).
Detailed explanation-2: -Rexed lamina IX – Composed of several distinct groups of large a motor neurons and small and motor neurons embedded within this layer. Its size and shape differ at various cord levels. In the cord enlargements the number of motor neurons increase and they form numerous groups.
Detailed explanation-3: -The lamina is the flattened or arched part of the vertebral arch, forming the roof of the spinal canal; the posterior part of the spinal ring that covers the spinal cord or nerves.
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