| Flap 1 |
Flap 2 |
| microscopic, thin- walled chambers that make up the tissue of the lungs and allow gases to pass between the air and the bloodstream; sing., alveolus | alveoli |
| a condition in which the ability of the blood to carry oxygen is reduced, causing weakness and fatigue | anemia |
| the opening of clogged arteries | angioplasty |
| a blood vessel in an animal or human that carries blood toward the heart | veins |
| a blood vessel that carries blood away from the heart | arteries |
| microscopic, thin-walled blood vessels that link arterioles and venules; function to supply oxygen and nutrients to cells and to carry away meabolic wastes | capillaries |
| a small bood vessel that carries blook from an artery to a capillary network | arterioles |
| a small blood bessel that carries blood from capillaries to a vein | venules |
| a chamber of the fheart that receives blood from veins | atria; artrium |
| 1)either of the chamvers of the heart that receives blood from an atrium and pumps it into an artery; | ventricles |
| the amount of force that blood exerts upon the walls of the blood vessels | blood pressure |
| a type of allergy in which the bronchial tubes constrict, making breathing difficult | bronchial asthma |
| the branches into which a bronchus divides as it enters a lung | bronchial tubes |
| the branches of the respiratory passageway into which the trachea divides; sing, bronchus | bronchi |
| the smallest branches of a bronchus wihtin a lung;terminate in alveoli | bronchioles |
| a system of specialized heart cells that generate electircal impulses and distribute them to all parts of the heart, enabling the heart to beat properly | cardiac conduction system |
| the buildup of fatty and fibrous tissue in the liver, often caused by prolonged alcoholism | cirrhosis |
| either of the two arteries which supply vlood to the heart muscle | coronary arteries |
| a type of heart surgery in which a grafted blood vessel is used to supply the heart muscles with blood, bypassing blocked coronary arteries | coronary artery bypass surgery |
| in biology, the muscle that separates the thoracic and abdominal cavities in mammals and man | diaphragm |
| a type of heart failure caused by a blockage of blood flow to the heart muscles | heart attack |
| special structures of the heart that prevent blood from flowing in the wrong direction | heart valves |
| a complex machine located outside the body that can take over the function of theheart and lungs for a short time, allowing the heart to be stopped by suitable drusgs and operated upon | heart-lung machine |
| a special iron-containing blood protein, found om red blood cells, that transports oxygen throughout the body and gives blood its read color | hemoglobin |
| the striated muscles between the ribs that expand the rib cage to aid in breathing | intercostal muscles |
| a tough white sac lined with a membrane that secretes a lubricating fluid; helps support and protect the heart an allows the heart to move easily within the chest as it pumps | pericardium |
| the liquid part of blood | plasma |
| the rhythmic change of pressure in the arteries that results from the pumping action of the heart; causes the artery walls to bulge outward and return to normal in time with the heartbeat | pulse |
| an "identification tag" present on the red blood cells of people who are Rh positive | Rh factor |
| 1) the thick vertical wall of the heart that divides the left atrium and ventricle from the right atrium and ventricle | septum |
| a large, glandular organ located in the uppper left region of the abdomen that stores surplus red blood cells and functions as an organ of the lymphatic system | spleen |
| the movement of blood from the heart to all parts of the body except the lungs | systemic circulation |
| the movement of blood between the heart and the lungs | pulmonary circulation |
| the movement of blood from the digestive organs to the liver during systemic circulation | portal circulation |
| the movement of blood from the body organs through the kidneys during systemic circulation | renal circulation |
| the phase of the cardiac cycle during which the atria or ventricles are contractin and pumping blood | systole |
| the phase of the cardiac cycle during which the atria or ventricles are relaxing, and filling with blood | diastole |
| the amount of air moved into and our of the lungs in any one breath during quiet, normal breathing; about 30 cubic inches or 1/2 liter | tidal volume |
| the maximum volume of air that can be exhaled after one takes the deepest breath possible, about 280 cubic inches (4.6 liters) in adults | vital capacity |
| a pair of tissue folds within the larynx that create vocal sounds when they vibrate; also called vocal folds | vocal cords |
