Choose a correct statement among the following:
Correct answer: B. Lower motor neurons have their cell bodies in the anterior column of grey matter
- A. Spinal reflexes have 4 elements
- B. Lower motor neurons have their cell bodies in the anterior column of grey matter
- C. Grey matter that lies transversely is the lateral commissure
- D. The spinal cord has 3 equal parts
Explanation
B is the correct option as the cell bodies of the lower neurons are located in the ventral horn of the spinal cord gray matter and in the motor nuclei of the cranial nerves in the brainstem.A is incorrect as spinal reflexes have 3 elements. C is incorrect as the area of grey matter that lies transversely is the transverse commissure. D is incorrect as the spinal cord is divided into 4 equal parts.
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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