| A | B |
|---|
| cardiovascular system | a collection of organs that transport blood throughout the body |
| blood | the fluid that carries gases, nutrients and wastes through the body and that is made up of plasma, red blood cells, platelets, and white blood cells |
| artery | a blood vessel that carries blood away from the heart to the body's organs |
| capillary | a tiny blood vessel that allows an exchange between blood and cells in other tissue |
| vein | a vessel that carries blood to the heart |
| pulmonary circulation | the flow of blood from the heart to the lungs and back to the heart |
| systemic circulation | the flow of blood from the heart to all parts of the body and back to the heart |
| blood pressure | the force that blood exerts on the walls of the artieries |
| lymphatic system | a collection of organs whose primary function is to collect extracellular fluid and return it to the blood |
| lymph | the fluid that is collected by the lymphatic vessels and nodes |
| lymph node | an organ that filters lymph and that is found along the lymphatic vessels |
| thymus | the main gland of the lymphatic system, it produces mature T lymphocytes |
| spleen | the largest lymphatic organ in the body |
| tonsils | small, rounded masses of lymphatic tissue located in the pharynx and in the passage from the mouth to the pharynx |
| respiration | the exchange of oxygen and carbon dioxide between living cells and their environment |
| respiratory system | a collection of organs whose primary function is to take in oxygen and expel carbon dioxide |
| pharynx | the passage from the mouth to the larynx and esophagus |
| larynx | the area of the throat that contains vocal cords and produces vocal sounds |
| trachea | the tube that connects the larynx to the lungs |
| bronchus | one of the two tubes that connect the lungs with the trachea |
| alveoli | an of the tiny air sacs of the lungs where oxygen and carbon dioxide are exchanged |
