Skin receptors respond to stimuli such as touch and pressure and signal the brain by activating portions of the nervous system. Receptors in the nose detect odors. 2. A cell structure or site that is capable of combining with a hormone, antigen, or other chemical substance.tretch receptor-a receptor in a muscle that responds to stretching of the muscle tissue. papilla-a small nipple-shaped protuberance concerned with taste, touch, or smell; the papillae of the tongue. sensory system-the body's system of sense organs.