1. Tardigrade
  2. Question
  3. Biology
  4. 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 above is/are correct?

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Q. 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 above is/are correct?

NTA AbhyasNTA Abhyas 2020Neural Control and Coordination

Solution:

A neuron is a microscopic structure composed of three major parts, namely cell body, dendrites and axon. The axons transmit nerve impulses away from the cell body and towards the axon-terminal to a synapse or to a neuro-muscular junction.