Relacionar Columnas HUMAN BIOLOGYVersión en línea LINK NAME AND DEFINITION por Guy Kruse 1 nervous tissue 2 epithelial tissue 3 cells 4 connective tissue 5 tissue 6 organ 7 muscle tissue 8 hormone 9 organ system 10 cardiovascular system Group of similar cells working together. Organs that work together to serve a common purpose. Group of nerve cells that sense stimuli and transmit signals; found in brain, spinal cord, and nerves. Organ system made up of the heart, blood, and blood vessels. A chemical messenger molecule. Structure made of two or more tissues that work together. Layers of tightly packed cells that line the surfaces of the body. Group of cells that are all involved in supporting and binding other tissues of the body; i.e. tendon, cartilage, bone, and blood. Bands of cells that contract and allow movement. Basic unit of structure and function of a living organism; the basic unit of life.