Question

How are nerve impulses conducted in the body?

Answer 1

• Special types of cells which conduct impulses from one place to another in the body are called neurons. Nerve cells have the ability to generate and conduct electro-chemical impulses. 
• The cells that support the nerve cells and help in their functioning are called neuroglia. 
• All the information about our surroundings is collected by the ends or dendrites of the neuron. 
• The chemical process begins at those ends and electric impulses are generated which are conducted from the dendrites to the cell body, from the cell body to the axon and from the axon to its terminal.
• These impulses are then to be transferred from this nerve cell to the next. 
• Now the impulse that reaches the terminal of an axon, stimulates the nerve cell to secrete certain chemicals. 
• These chemicals pass through a minute space, called the synapse, between two adjacent neurons and generate the impulses in the dendrites of the next neuron. 
• In this way, impulses are conducted in the body and these impulses are finally conveyed by nerve cells to muscles cells or glands.