Sense Organs: The Eye And The Ear -- Lesson 260
In the recent chapters we have learned about the sense organs; the eye and the ear. Now in this chapter we would learn about in brief and recall the points.The sensitive nerve endings in the corium layer of the skin receive impulses from stimuli of various kinds and applied to the external surfaces of the body. These nerve endings transmit electrical messages, initiated by the stimuli, to regions of the brain (cerebrum and thalamus) so that we can able to identify sensations through temperature, touch, pain, and pressure. The nerve cells which carry impulses from a sense organ or sensory receptor area, such as the skin, tastebuds, and olfactory regions which are also called centers of smell in the nose, to the brain are called afferent sensory neurons. We already came across through the eye and the ear which are the sensory organs, like the skin, taste buds, and olfactory regions. Because these are receptors, whose sensitive cells may be activated by certain form of enrgy or stimul