Grey matter is composed of:
Correct answer: C. Cell bodies of neuron
- A. Schwann cells
- B. Neuron fibres
- C. Cell bodies of neuron
- D. Nissl's granules
Explanation
Option C is correct.Grey matter is composed of neuronal cell bodies, dendrites, and synapses. Neuronal cell bodies are the "brains" of neurons, where information is processed and stored. Dendrites are the "arms" of neurons, which receive signals from other neurons. Synapses are the junctions between neurons, where signals are passed from one neuron to another. Grey matter is found in the cerebral cortex, the cerebellum, and the brainstem. The cerebral cortex is the outer layer of the brain and is responsible for higher-order functions, such as thinking, planning, and language. The cerebellum is responsible for coordination and balance. The brainstem is responsible for basic functions, such as breathing and heart rate.
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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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