Gray matter is primarily composed of:
Correct answer: C. Neuron somas
- A. Axons
- B. Synapse
- C. Neuron somas
- D. None of these
Explanation
Gray matter is primarily composed of "Neuron somas" or cell bodies. In the nervous system, gray matter refers to the regions of the brain and spinal cord where the cell bodies of neurons are densely packed. It appears gray due to the presence of cell bodies, which contain the nucleus and other organelles required for the neuron's metabolic functions and information processing. Gray matter contains various types of neurons that are responsible for processing and integrating incoming signals from sensory neurons or other areas of the brain. It plays a crucial role in cognition, sensory perception, motor control, and other higher-order brain functions.
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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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