Terms : Hide Images
| 55890165 | Blood | A type of connective tissue with a fluid matrix called plasma in which blood cells are suspended | |
| 55890166 | Blood vessels | a set of tubes through which the blood moves through the body | |
| 55890167 | Heart | A muscular pump that uses metabolic energy to elevate hydrostatic pressure of blood. Blood then flows down a pressure gradient through blood vessels that eventually return blood to the heart | |
| 55890168 | Open circulatory systems | an arrangement of internal transport in which blood bathes the organs directly and there is no distinction between blood and interstitial fluid | |
| 55890169 | Closed circulatory systems | blood is continued to vessels and is kept separate from interstitial fluid | |
| 55890170 | Cardiovascular system | A closed circulatory system with a heart and branching network of arteries, capillaries, and veins the system is characteristic of vertebrates | |
| 55890171 | Atria | a chamber that receives blood returning to the vertebrate heart | |
| 55890172 | Ventricles | A heart chamber that pumps blood out of a heart. or a space in the vertebrate brain filled with cerebrospinal fluid | |
| 55890173 | Arteries | A vessel that carries blood away from the heart to organs throughout the body | |
| 55890174 | Veins | a vessel that returns blood to the heart | |
| 55890175 | Capillaries | a microscopic blood vessel that penetrates the tissues and consists of a single layer of endothelical cells that allows exchange between the blood and interstitial fluid | |
| 55890176 | Pulmonary circuit | the branch of the circulatory system that supplies the lungs | |
| 55890177 | Systemic circuit | the branch of the circulatory system that supplies all body organs and then returns oxygen poor blood to the right atrium via the veins | |
| 55890178 | Cardiac cycle | the alternating contractions and relaxations of the heart | |
| 55890179 | Systole | the stage of the heart cycle in which the heart muscle contracts and the chambers pump blood | |
| 55890180 | Diastole | the stage of the heart cycle in which the heart muscle is relaxed, allowing the chambers to fill with blood | |
| 55890181 | Heart rate | the rate of heart contraction | |
| 55890182 | Stroke volume | the amount of blood pumped by the left ventricle in each contraction | |
| 55890183 | Atrioventricular valves | A valve in the heart between each atrium and ventricle that prevents a backflow of blood when the ventricles contract | |
| 55890184 | Semilunar valves | a valve located at the two exits of the heart where the aorta leaves the left ventricle and the pulmonary artery leaves the right ventricle | |
| 55890185 | Sinoatrial node | A region of specialized muscle tissue between the right atrium and right ventricle. it generates electrical impulses that primarily causes the ventricles to contract | |
| 55890186 | Atrioventricular node | A region of specialized muscle tissue between the right atrium and right ventricle. It generates electrical impulses that primarily cause the ventricles to contract | |
| 55890187 | Lymphatic system | a system of vessels and lymph nodes separate from the circulatory system that returns fluid and protein to the blood | |
| 55890188 | Lymph | the colorless fluid derived from interstitial fluid in the lymphatic system of vertebrate animals | |
| 55890189 | Lymph nodes | organs located along lymph vessels. they filter lymph and help attack viruses and bacteria | |
| 55890190 | Plasma | the liquid matrix of blood in which the cells are suspended | |
| 55890191 | Eyrthrocytes | A red blood cell contains hemoglobin which functions in transporting oxygen in the circulatory system | |
| 55890192 | Leukocytes | a white blood cell typically functions in immunity such as phagocytosis or antibody produtcion | |
| 55890193 | Platelets | a small enucleated blood cell important in blood clotting; derived from large cells in the bone marrow | |
| 55890194 | Fibrinogen | the inactive form of the plasma protein that is converted to the active form fibrin which aggregates into threads that form the framework of a blood clot | |
| 55890195 | Fibrin | he activated form of the blood clotting protein fibrinogen which aggregates into threads that form the fabric of the clot | |
| 55890196 | Gills | a localized extension of the body surface of many aquatic animals, specialized for gas exchange | |
| 55890197 | Countercurrent exchange | the opposite flow of adjacent fluids that maximizes transfer rates; for example, blood in the gills flows in the opposite direction in which water passes over the gills, maximizing oxygen uptake and carbon dioxide loss. | |
| 55890198 | Tracheal systems | a gas exchange system of branched, chitin-lined tubes that infiltrate the body and carry oxygen directly to cells in insects | |
| 55890199 | Larynx | the voice box containing the vocal cords | |
| 55890200 | Trachea | the windpipe; that portion of respiratory tube that has C-shaped cartilaginous rings and passes from larynx to two bronchi | |
| 55890201 | Bronchi | one of a pair of breathing tubes that branch from the trachea into the lungs | |
| 55890202 | Bronchioles | fine brances of the bronchus that transport air to alveoli | |
| 55890203 | Alveoli | one of the deadend multilobed air sacs that constitute the gas exchange surface of the lungs | |
| 55890204 | Diaphragm | a sheet of muscle that forms the bottom wall of the thoracic cavity in mammals; active in ventilating the lungs | |
| 55890205 | Partial pressure | the concentration of gases a fraction of total pressure | |
| 55890206 | Hemoglobin | iron-containing protein in red blood cells that carries oxygen for delivery to cells | |
| 55890207 | Bohr shift | A lowering of the affinity of hemoglobin for oxygen caused by a drop in PH; facilitates the release of oxygen from hemoglobin in the vanity of active tissues. |
