Describe three kinds of nerves, giving examples of each.
Answers
Explanation:
Nerves are a set of neurons, which are the individual nerve cells. Our nerves are located throughout our bodies, that is from our skin, through and around our organs and towards their centre, the brain. There are three types of nerves: motor, sensory and mixed.
Sensory nerves also referred to as afferent nerves, carry impulses from sensory receptors towards the brain. Example: These nerves carry the impulses from the sense organs to the brain or to the spinal cord as the optic nerve of the eye.
Motor nerves also referred to as efferent nerves, carry impulses far from the brain to muscles and glands. Example: These nerves have only motor fibres as nerves to the muscles of the eyeball.
Mixed nerves are composed of motor and sensory fibres, and transmit messages in both directions at once. Example: The nerve going to the tongue.