In this article we will discuss about the Smell Receptors and Taste Receptors. The receptors for taste and smell are classified as chemoreceptors as these respond to special chemicals in aqueous solution. In each case, the chemicals must go into solution in the film of liquid coating the membranes of the receptor cells before these can be detected. The taste [...]
In this article we will discuss about the structure of human eye. Structure of Human Eye: The eye is a hollow, spherical structure measuring about 2.5 cm in diameter. Its wall is composed of three coats: 1. The outer fibrous coat— sclera, cornea. 2. The middle vascular coat— choroid, ciliary body, iris. 3. The inner nervous coat— retina. 1. Fibrous [...]
Some skin receptors are only free nerve endings and may penetrate the epidermis. Other skin receptors possess connective tissue sheaths and mostly occur in the dermis and are often called corpuscles or bulbs. The skin has the following receptors: (i) Free nerve endings are distributed between cells of the epidermis. Most of these nerve endings are sensitive to pain, (ii) [...]