Question

An axon has four terminal ends connected with dendrites of four different neurons. Its nerve impulse will
A.Become weak due to distribution into four.
B.Travel in all four neurons with equal strength.
C.Pass on to one neuron only.
D.Travel to none because the movement of impulse is from dendrite to axon.

Answer 1

Hint:
Neurons are known as nerve cells and transmit information in the form of electrical impulses. They are microscopic in nature and constituted of three major parts namely cyton, dendrites, and axon.

Complete answer:
Cyton is the main part of the neuron and is also known as the cell body or soma. It is covered by a protective membrane. This membrane not only protects the soma but also allows communication between the immediate neighborhood.
Dendrites are numerous highly branched cytoplasmic extensions arising from the cell body. They conduct impulses toward the cell body and conduct electric impulses outside the cell body.
Axon is a single, unbranched cylindrical projection that arises from the cyton. The axon is covered with a myelin sheath and it is fatty in nature. It carries impulses away from cyton.
Neurons communicate with each other at junctions which are known as synapses. One neuron sends a message to a target neuron of another cell with the help of a synapse. The axon carries impulses away from the cyton to a synapse or a neuron muscular junction. As nerve impulses travel from the dendrites of one neuron to the axon of another neuron and if the terminal ends of the axon are connected with the dendrites of four adjacent neurons, then the nerve impulse of the axon will travel in all four directions.
Hence the correct answer is Travel in all four neurons with equal strength..

Option ‘B’ is correct

Note:
Dendrites are present in more numbers compared to axons and are shorter in length. Generally, the neurons have one axon that can range in size between 0.1 mm to over 3 feet.