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Read the following statements about the ...

Read the following statements about the nervous system:
I. The neural organisation in Hydra is composed of a network of neurons.
II. A neuron is a macroscopic structure composed of three major parts
III. Nissl's granules are present in dendrites and cell body.
IV. The axons transmit nerve impulses towards the cell body.
How many from the many from the above is/are correct ?

A

Four

B

Three

C

Two

D

One

Text Solution

Verified by Experts

The correct Answer is:
C
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Assertion : A neuron is a microscopic structure composed of three major parts, namely, cell body, dendrites and axon. Reason : Short fibres which branch repeatedly and project out of the cell body are called axons.

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Read the following statements about the human nervous system : (i) A multipolar neuron is with one axon and two or more dendrites , found in the cerebral cortex. (ii) in resting condition, the sodium-potassium pump transports 3 Na^(+) inwards and 2K^(+) outwards the cell. (iii) Midbrain and hindbrain form the brain stem including the cerebellum. (iv) the pons of the hindbrain is directly connected to the spinal cord to control respiration. How many statement/s from above is/are incorrect ?

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