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Question
The largest number of neurons are found in:
The largest number of neurons are found in:
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Solution
The correct option is A Brain
Retina forms the innermost layer of eyeball and mainly contains rods and cones, the photoreceptors, along with nerve fibres. Tongue is a muscular organ, composed of skeletal muscles, to help change its shape and support the movement. Main function of central nervous system (brain and spinal cord) is to integrate the sensory inputs from internal and external environment as received by sensory neurons and process and finally transmit the nerve impulses to effectors (muscles and glands). Thus, being the centre of processing information, the brain has maximum number of neurons followed by the spinal cord. Therefore, the correct answer is option A.
Retina forms the innermost layer of eyeball and mainly contains rods and cones, the photoreceptors, along with nerve fibres.
Tongue is a muscular organ, composed of skeletal muscles, to help change its shape and support the movement. Main function of central nervous system (brain and spinal cord) is to integrate the sensory inputs from internal and external environment as received by sensory neurons and process and finally transmit the nerve impulses to effectors (muscles and glands). Thus, being the centre of processing information, the brain has maximum number of neurons followed by the spinal cord.
Therefore, the correct answer is option A.
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