Question

"Nodes of Ranvier" are found in
(A)Brain
(B)Heart
(C)Axon
(D)Eye

Answer 1

Hint: Node of Ranvier is defined as the periodic gap which is seen in the insulating sheath on the long, slender projection of a nerve cell, or neuron, in the vertebrates, that will conduct electrical impulses known as the action potentials away from the nerve cell body.

Complete answer:
"Nodes of Ranvier" are found in the Axon. Nodes of Ranvier are commonly known to be the Non-myelinated areas of the myelinated nerve fibre. The nodes of Ranvier will be for sure interrupting the insulation at intervals, and due to this discontinuity, the impulses have to jump from one node to another node in a process that is commonly known as saltatory conduction.

Additional Information:
The axon performs the function to transmit information to different neurons, muscles, and glands. In some of the sensory neurons, like those for touch and heat, the axons are called afferent nerve fibres and therefore the electrical impulse travels along these from the periphery to the cell body, and from the cell body to the spinal cord along another branch of an equivalent axon. Axon dysfunction will definitely cause many inherited and acquired neurological disorders which may affect both the peripheral and central neurons. An axon is one of two kinds of cytoplasmic protrusions from
the cell body of a neuron. Axons are different from the dendrites in several
ways, including shape i.e dendrites often taper while axons usually maintain a continuing radius, length,
and the function seen is that dendrites receive signals whereas axons transmit them.

So, the correct answer is ‘Axon’.

Note: An axon can be further divided into many branches called telodendria. At the end of every telodendron is an axon terminal. Axon term contains synaptic vesicles that can store the neurotransmitter, which can be released at the synapse.