sense organ. In animals, an organ or part that is sensitive to a stimulus, as of sound, touch, or light. Examples of sense organs include the eye, ear, and nose, as well as the taste buds on the tongue.ar-the sense organ for hearing and equilibrium. organ of hearing-the part of the ear that is responsible for sensations of sound. inner ear, internal ear, labyrinth-a complex system of interconnecting cavities; concerned with hearing and equilibrium.
Arterial Ulcers Arterial ulcers, also referred to as lower extremity ulcers, typically occur in patients who are suffering from artery disease. This type of skin ulcer is typically located on the feet, toes and toenails, where the poorly functioning arteries have trouble circulating blood properly. The base of an arterial ulcer has a brown, yellow, black or gray color, while the surrounding skin often looks red and swollen. Arterial skin ulcers are usually painful, and the pain can be far worse at night.
slide 1 of 5. The main types of ulcers fall under the title peptic ulcer.. When the lining of the digestive tract is eaten away by stomach acid and other digestive juices, a hole called a peptic ulcer can form. A peptic ulcer causes abdominal pain, which differs from one ulcer to another.