| liver | 1: A large very vascular glandular organ of vertebrates that secretes bile and causes important changes in many of the substances contained in the blood (as by converting sugars into glycogen which it stores up until required and by forming urea).n2: Any of various large compound glands associated with the digestive tract of invertebrate animals and probably concerned with the secretion of digestive enzymes [Brenda]. | — |
| hair | 1: A slender threadlike outgrowth of the epidermis of an animal; especially: one of the usually pigmented filaments that form the characteristic coat of a mammal.n2: The hairy covering of an animal or a body part; especially: the coating of hairs on a human head [Brenda]. | — |
| kidney | 1: One of a pair of vertebrate organs situated in the body cavity near the spinal column that excrete waste products of metabolism, in humans are bean-shaped organs about 4 1/2 inches (11 1/2 centimeters) long lying behind the peritoneum in a mass of fatty tissue, and consist chiefly of nephrons by which urine is secreted, collected, and discharged into a main cavity whence it is conveyed by the ureter to the bladder.n2: Any of various excretory organs of invertebrate animals [Brenda]. | — |
| tooth | 1: One of the hard bony appendages that are borne on the jaws or in many of the lower vertebrates on other bones in the walls of the mouth or pharynx and serve especially for the prehension and mastication of food and as weapons of offense and defense.n2: Any of various usually hard and sharp processes especially about the mouth of an invertebrate [Brenda]. | — |
| pericardium | 1: The conical sac of serous membrane that encloses the heart and the roots of the great blood vessels of vertebrates.n2: A cavity or space that contains the heart of an invertebrate and in arthropods is a part of the hemocoel [Brenda]. | — |
| brain | 1: The portion of the vertebrate central nervous system that constitutes the organ of thought and neural coordination, includes all the higher nervous centers receiving stimuli from the sense organs and interpreting and correlating them to formulate the motor impulses, is made up of neurons and supporting and nutritive structures, is enclosed within the skull, and is continuous with the spinal cord through the foramen magnum. Also named encephalon.n2: A nervous center in invertebrates comparable in position and function to the vertebrate brain [Brenda]. | — |
| meniscus | A fibrous cartilage within a joint especially of the knee [Brenda]. | — |
| tongue | A fleshy movable process of the floor of the mouths of most vertebrates that bears sensory end organs and small glands and functions especially in taking and swallowing food and in humans as a speech organ [Brenda]. | — |
| ganglion | A group of nerve cell bodies located outside the central nervous system. The term is occasionally applied to certain nuclear groups within the brain or spinal cord, such as the basal ganglia [Brenda]. | — |
| cardiac valve | A heart valve normally allows blood flow in only one direction through the heart. The four valves commonly represented in a mammalian heart determine the pathway of blood flow through the heart. A heart valve opens or closes incumbent upon differential blood pressure on each side [Wikipedia: http://en.wikipedia.org/wiki/Heart_valve]. | — |
| carotid artery | A key artery located in the front of the neck that carries blood from the heart to the brain. Cholesterol plaques on the inner wall of the carotid artery can lead to stroke [Brenda]. | — |
| bladder | A membranous sac in animals that serves as the receptacle of a liquid or contains gas [Brenda]. | — |
| nail | A nail is a horn-like envelope covering the dorsal aspect of the terminal phalanges of fingers and toes in humans, most non-human primates, and a few other mammals. Nails are similar to claws, which are found on numerous other animals. Fingernails and toenails are made of a tough protein called keratin, as are animals' hooves and horns. The mammalian nail, claw, and hoof are all examples of unguis (plural ungues) [Wikipedia: http://en.wikipedia.org/wiki/Nail_(anatomy)]. | — |
| vermiform appendix | A narrow blind tube usually about three or four inches (7.6 to 10.2 centimeters) long that extends from the cecum in the lower right-hand part of the abdomen, has much lymphoid wall tissue, normally communicates with the cavity of the cecum, and represents an atrophied terminal part of the cecum [Brenda]. | — |
| sweat gland | A simple tubular gland of the skin that secretes perspiration, is widely distributed in nearly all parts of the human skin, and consists typically of an epithelial tube extending spirally from a minute pore on the surface of the skin into the dermis or subcutaneous tissues where it ends in a convoluted tuft [Brenda]. | — |
| gall bladder | A small, pear-shaped muscular sac, located under the right lobe of the liver, in which bile secreted by the liver is stored until needed by the body for digestion [Brenda]. | — |
| mesenchymal stem cell | A special adult stem cell, which is a multipotent stem cell, that can be found in bone marrow and can produce all cell types of bone, cartilage, fat, blood, and connective tissues [Brenda]. | — |
| endocardium | A thin serous membrane lining the cavities of the heart [Brenda]. | — |
| alveolus | A tiny, thin-walled, capillary-rich sac in the lungs where the exchange of oxygen and carbon dioxide takes place [Brenda]. | — |
| skeletal muscle | A usually voluntary muscle made up of elongated, multinucleated, transversely striated muscle fibers, having principally bony attachments [Brenda]. | — |
| wrinkle | A wrinkle is a fold, ridge or crease in the skin. Skin wrinkles typically appear as a result of aging processes such as glycation or, temporarily, as the result of prolonged (more than a few minutes) immersion in water. Wrinkling in the skin is caused by habitual facial expressions, aging, sun damage, smoking, poor hydration, and various other factors. With prolonged water exposure, the outer layer of skin starts to absorb water. The skin doesn't expand evenly, causing it to wrinkle. Depletion of water in the body, as occurs with dehydration, can also cause this puckering of the skin. Cortisol causes degradation of skin collagen [Wikipedia: http://en.wikipedia.org/wiki/Wrinkle]. | — |
| pharyngeal tonsil | Adenoids (or pharyngeal tonsil, or nasopharyngeal tonsil) are a mass of lymphoid tissue situated posterior to the nasal cavity, in the roof of the nasopharynx, where the nose blends into the throat [Wikipedia: http://en.wikipedia.org/wiki/Pharyngeal_tonsil]. | — |
| arterial adventitia | Adventitia is the outermost connective tissue covering of any organ, vessel, or other structure. It is also called the tunica adventitia or the tunica externa [Wikipedia: http://en.wikipedia.org/wiki/Adventitia]. | — |
| auditory apparatus | All of the components of the organ of hearing including the outer and middle and inner ears. | — |
| bile duct | Any of the ducts that convey bile in and from the liver [Brenda]. | — |
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