| A | B |
|---|
| homeostasis | a maintenance of a constant internal state in a changing environment |
| skeletal system | the organ system whose primary function is to support and protect the body and to allow the body to move |
| muscular system | the organ system whose primary function is movement and flexibility |
| ligament | a type of tissue that holds together the bones in a joint |
| tendon | a tough connective tissue that attaches a muscle to a bone or to another body part |
| joint | a place where two or more bones meet |
| cardiovascular system | a collection of organs that transport blood throughout the body: the organs in this system include the heart, the arteries, and the veins |
| lymphatic system | a network of organs and tissues that collect the fluid that leaks from blood and returns it to blood vessels: includes lymph nodes, lymph vessels, and lymph the place where certain white blood cells mature |
| capillary | a tiny blood vessel that allows an exchange between blood and cells in tissues |
| respiratory system | a collection of organs whose primary function is to take in oxygen and expel carbon dioxide: the organs of this system include the lungs, the throat, and the passageways that lead to the lungs |
| bronchi | one of the two main branches of the trachea that lead directly to the lungs: plural bronchi |
| blood | a fluid that carries gases, nutrients, and wastes through the body and that is made up of platelets, white blood cells, red blood cells, and plasma |
| lymph node | small, bean shaped masses of tissue that remove pathogens and dead cells from the lymph, concentrated in the armpits, neck and groin: high concentration of white blood cells found in lymph nodes |
| vein | in biology, a vessel that carries blood to the heart |
| larynx | the part of the respiratory system between the pharynx and the trachea: has walls of cartilage and muscle and contains the vocal cords |
| alveoli | tiny, thin walled, capillary rich sac in the lungs where the exchange of oxygen and carbon dioxide takes place: also called air sac |
| lymph | the clear, watery fluid that leaks from blood vessels and contains white blood cells |
| artery | a blood vessel that carries blood away from the heart to the bodys organs |
| pharynx | the part of the respiratory system that extends from the mouth to the larynx |
| trachea | thin walled tube that extends from the larynx to the bronchi: carries air to the lungs: also called windpipe |
