Question

The cells which pass the instructions from brain to different part of body is called as
A.Muscle tissue
B.Neurons
C.Red blood cells
D.White blood cells

Answer 1

Hint: Nervous system is responsible for transport of message signals from the brain to all parts of the body.

Complete answer:
1: The cells which are responsible for transport of messages from the brain to different parts of the body are known as neurons and the system is known as the nervous system.
2: The smallest unit of nervous system is nerve cells or the neuron, the neurons are the largest cell of the body which is divided into three main parts.
3: The nerve cell once damaged can’t be regained again in whole life, so damage to these cells is always permanent.
4: They have dendrite to sense the signals and then transfer to the body of the neuron and then to the axon. The axon of one cell is connected to the dendrite of the next cell.
5: The gap between the two neurons is known as the synaptic gap and the whole complex is known as Synaptonemal complex.
6: The message transfers from one neuron to the another in the form of a chemical acetyl co- A. Which is one of the most important neurotransmitters.

Hence, option B is correct.

Note:
The nerve cells are divided into two types: the sensory cells and the motor cells.
The cells which collect the signals from the surrounding and pass the message to the brain are known as sensory cells whereas the cells which transfer the message from the brain to the different parts of the body are known as motor nerve cells.