sinoatrial node, initiates electric impulse,pacemaker
atrioventricular node, fibers relay impulses, bundle of his
btwn right atrium and right ventricle, right lower heart
obstruction of blood vessels by emolus
blood clot or undissolved matter circulating in bloodstream
inflamation of a vein
one cell thick vessels form bridge btwn arterial and venous circulation
area of arm anterior in front of and below elbow, several veins here, vein arrangements h and m
median cubital vein
near center of anticubital vein, first choice, usually larger, close to surface, staionary
tube like expand and contract, arteries,veins,capillaries.
smallest branches of arteries, join cappillaries
internal space of blood vessels where blood flows
longest vein in body
carry blood away from heart, thick walls, blood is under pressure, no bounce.
two divisions of circulation
pulmonary circulation: carries blood from right ventricle to lungs to remove carbon dioxide and pick up oxygen and returns oxygenated blood to left atrium. systemic circulation: serves the rest of the body carring oxygenated blood from left ventricle returns to right atrium with dirty blood.
only artery carries deoxygenated blood from heart to lungs
chambers of the heart
upper chamber: right and left atrium, recieves deoxygented blood. Lower chamber: right and left ventricle: pumps and delivers blood.