Relier Pairs HUMAN BIOLOGYVersion en ligne LINK NAME AND DEFINITION par Guy Kruse 1 tissue 2 connective tissue 3 nervous tissue 4 cells 5 epithelial tissue 6 hormone 7 cardiovascular system 8 organ 9 organ system 10 muscle tissue 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. Group of cells that are all involved in supporting and binding other tissues of the body; i.e. tendon, cartilage, bone, and blood. Basic unit of structure and function of a living organism; the basic unit of life. Structure made of two or more tissues that work together. Bands of cells that contract and allow movement. A chemical messenger molecule. Layers of tightly packed cells that line the surfaces of the body. Organ system made up of the heart, blood, and blood vessels. Group of similar cells working together.