chapter 11 Flashcards
aorta
largest artery in the body
apex of the heart
lower tip of the heart
arteriole
small artery
artery
largest type of blood vessel
atrioventricular bundle
specialized muscle fibers connecting the atria with the ventricles and transmitting electrical impulses between them
atrioventricular node
specialized tissue in the wall between the atria
atrium
one of two upper chambers of the heart
capillary
smallest blood vessel
carbon dioxide
gas released by body cells
coronary arteris
blood vessel that branch from the aorta and carry oxygen rich blood to the heart muscle
deoxygenated blood
blood that is oxygen poor
diastole
relaxation phase of the heartbeat
electrocardiogram
record the electricity flowing through the heart
endocardium
inner lining of blood vessels
endothelium
innermost lining of blood vessels
mitral valve
valve between the left atrium and the left ventrucke
murmur
abnormal swishing sound caused by improper closure of the heart valves
myocardium
muscular middle layer of the heart
normal sinus rhythm
heart rhythm originating the sinoatrial node with the rate in patients at rest of 60 to 100 beats per minute
oxygen
gas that enters the blood through the lungs and travels to the heart to be pumped via arteries to all body cell
pacemaker
specialized nervous tissue in the right atrium that begins the heartbeat
pericardium
double layered membrane surrounding the heart
pulmonary artery
artery carrying oxygen poor blood from the heart to the lungs
pulmonary circulation
flow of blood from the heart to the lungs and back to the heart