Epithelial tissue can be found to line or cover sufaces or body cavities. Examples: outer layer of skin, lines kidneys, and most digestive organs. Connective tissue are diverse in classification. Examples are bones, blood, tendons, cartiledge, and can surround internal organs. Muscle tissue can be found connected to bones, surrounding hollow organs and tuves including blood vessels and bladder, and the heart. Nervous tissue is located in brain and spinal cord.