Term
|
Definition
| system inludes the heart and all the blood vessels of the body its function is to bring oxygen to all cells of the body and remove carbon dioxide |
|
|
Term
|
Definition
|
|
Term
|
Definition
| outer layer dense ct attached to the diaphragm sternum vertebral canal and 2 large vessels of the heart |
|
|
Term
|
Definition
| innermost layer also called (epicardium) actually covers the heart |
|
|
Term
|
Definition
|
|
Term
|
Definition
| formed by the the fibrous and parietal pericardium |
|
|
Term
|
Definition
| space between visceral and parietal layers with small amount of serous fluid to reduce friction between membranes as the heart moves inside them |
|
|
Term
|
Definition
| (visercal pericardium protects heart reduces friction (outermost) |
|
|
Term
|
Definition
| thick middle layer made mostly of cardiac muscle tissue to pump blood out of the heart chambers |
|
|
Term
|
Definition
| innermost layer made of specialized cardiac muscle fibers called purkinje fibers |
|
|
Term
|
Definition
| conduct nerve impluses through the heart |
|
|
Term
|
Definition
| two upper chambers receive blood returning to the heart |
|
|
Term
|
Definition
| earlike projections that cover each atria |
|
|
Term
| right and left ventricles |
|
Definition
| two lower chambers recieve blood from the atria contract and force blood out of the heart into the arteries |
|
|
Term
|
Definition
| a solid wall seperating the right atrium and ventricle from the left atrium and ventricle therefore blood on the right never mixes with blood on the left |
|
|
Term
|
Definition
| b/t the right atrium and right ventricle prevents backflow of blood that is moving in the right ventricle back into the right atrium it contains chordae tendinae |
|
|
Term
|
Definition
| strong fibrous strings that prevent the tricuspid valve from swinging back into the atrium controlled by the papillary muscle |
|
|
Term
|
Definition
| allows blood to leave the right ventricle and prevents backflow into the ventricular chamber as it exits the pulmonary truck (just a big artery) |
|
|
Term
|
Definition
| (mitral valve) prevents backflow of blood back into the left atrium from the left ventricle contains the chordinae tendineae |
|
|
Term
|
Definition
| aorta is the large artery exiting the left ventricle at the base of the aorta is the aortic valve which prevents backflow of blood (body) |
|
|
Term
|
Definition
| bicuspid and tricuspid valves (av valves) |
|
|
Term
|
Definition
| pulmonary and aortic valves (sl valves) |
|
|
Term
| superior and inferior vena cavas |
|
Definition
| largest vein brings blood to right atrium |
|
|
Term
|
Definition
| vessels that carry blood away from the heart under high pressure |
|
|
Term
|
Definition
| thinner tubes taht arise from the arteries |
|
|
Term
|
Definition
| innermost layer of endothelium that provides a smooth surface to prevent blood clotting secretes biochemicals |
|
|
Term
|
Definition
| it keeps platlets from sticking and secrete substances that dilate/ constrict blood vessels |
|
|
Term
|
Definition
| middle layer that makes up the bulk of the artery wall |
|
|
Term
|
Definition
| thin outer layer that attaches the artery to the surroundign tissue |
|
|
Term
|
Definition
| branches of the nervous system that invade smooth mucle of an artery/arteriole wall |
|
|
Term
|
Definition
| the smallest diameter blood vessel that connects arterioles to venules they are extensions of the arterioles they form a semipermeable layer (thin slits) where substances are exchanged b/t blood and tissue fluid surrounding cells |
|
|
Term
|
Definition
| oxygen dropped off carbon dioxide picked up nutrients |
|
|
Term
|
Definition
| when the vasomotor fibers stimulate the smooth muscle to contract which reduces the diameter of the vessel |
|
|
Term
|
Definition
| when the impulses to the vasomotor fibers is inhibited the smooth muscle relaxes and the diameter of the vessel increases |
|
|
Term
|
Definition
| smooth muscle that enericles capillary entrances which regulate blood distribution into the capillary it closes by contracting and opens by relaxing they open and close according to the needs of the cells they supply |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| the vessels that carry blood from the heart to the lungs and back to the heart (pulmonary truck and back to the left atrium) |
|
|
Term
|
Definition
| vessels that carry blood from the heart to all parts of the body and back again (aorta and back to the right atrium) |
|
|
Term
|
Definition
| supply to the heart tissues |
|
|
Term
|
Definition
| bring deoxygenated blood to the heart into the coronary sinus and right atrium |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| the series of events that make a complete heartbeat |
|
|
Term
|
Definition
1st sound - atria filling with blood relaxing, avs closed at the same time.
ventricles blood leaving contracted sls are open
2nd sound- atria blood leaves contraction avs are open
at the same time ventricles filling with blood relaxed sls are closed |
|
|
Term
|
Definition
| av valves close/ventricles cotnract |
|
|
Term
|
Definition
| sl valves are closed/ventricles relaxed |
|
|
Term
| cardiac conduction system |
|
Definition
| specialized cardiac muscle tissues that send impulses throughout the myocardium and coordinate the events of the cardiac cycle |
|
|
Term
| sinoatrial node (s-a node) |
|
Definition
| specialized cardiac mucle tissue beneath the epicardium at the top of the right atrium that stimulate cardiac muscle fibers to contract |
|
|
Term
|
Definition
| sa node the sa node stimulates one impules after another and forms a rhythmatic pattern of contractions about 70 to 80 times per minute in an adult |
|
|
Term
|
Definition
| specialized cardiac muscle tissue at the bottom right atrium near the septum it provides the conduction pathway b/t the sa node to the av node |
|
|
Term
|
Definition
| group of specialized muscle fibers found in the walls of the ventricles that conduct impuleses from the av bundle into the ventricle walls |
|
|
Term
|
Definition
| the force blood exerts against the inner walls of the blood vessels |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| contract, blood pusched through the semilunar valves increases pressure in teh associated arteries |
|
|
Term
|
Definition
| relax. as aterial pressure drops |
|
|
Term
|
Definition
brachiolic artery, average readig s/d
120/80 |
|
|
Term
|
Definition
| the sure of blood from a ventricular contraction distends the arterial wall and when the contraction end sthe wall recoils in an artery that runs close to the surface of the skiln is the pulse |
|
|
Term
|
Definition
|
|
