Question

Describe three kinds of nerves, giving example of each.

Answer 1

Nerves are a collection of neurons, which are the individual nerve cells. Our nerves are located throughout our bodies from our skin, through and round our organs and towards their centre, the brain. In biology, the nervous system is divided into the central nervous system, which includes the nerves of the brain and the spine, and the peripheral nervous system which includes the rest of the nerves. The peripheral nervous system encompasses, as a subcategory, the autonomic nervous system which helps the body to control involuntary functions including the movements of our heart, stomach, intestines, bladder and sweating. There are three types of peripheral nerves: motor, sensory and autonomic.

1. Sensory nerves also known as afferent nerves, carry impulses from sensory receptors towards the brain.
   
2. Motor nerves also known as efferent nerves, carry impulses away from the brain to muscles and glands.
   
3. Autonomic nervous system, in vertebrates, the part of the nervous system that controls and regulates the internal organs without any conscious recognition or effort by the organism.