Flashcards in Cardiovascular System Deck (72):
largest artery in the body
apex of the heart
lower tip of the heart
largest type of blood vessel; carries blood away from the heart to all parts of the body.
atrioventricular bundle (bundle of HIS)
specialized muscle fibers connecting the atria with the ventricles and transmitting electrical impulses between them.
specialized tissue in the wall between the atria. Electrical impulses pass from the pacemaker (SA node) through the AV node and the atrioventricular bundle or bundle of His toward the ventricles.
one of the two upper chambers of the heart
smallest blood vessel. Materials pass to and from the bloodstream through thin capillary walls.
blood vessels that branch from the aorta and carry oxygen-rich blood to the heart muscle.
blood that is oxygen poor
relaxation phase of the heartbeat
record of electricity flowing through the heart. Represented by waves or deflections called P, QRS, or T.
inner lining of the heart
innermost lining of blood vessels
valved between the left atrium and left ventricle; bicuspid valve
abnormal swishing sound caused by improper closure of the heart valves
muscular, middle layer of the heart
normal sinus rhythm
heart rhythm originating in the sinoatrial node with a rate in patients at rest of 60 to 100 bpm.
(sinoatrial node) specialized nervous tissue in the right atrium that begins the heartbeat. An artificial cardiac pacemaker is an electronic apparatus implanted in the chest to stimulate heart muscle that is weak and not functioning.
double-layered membrane surrounding the heart
artery carrying O2 POOR blood from the heart to the lungs
flow of blood from the heart to the lungs and back to the heart
valve positioned between the right ventricle and the pulmonary artery.
one of two pairs of vessels carrying oxygenated blood from the lungs to the left atrium of the heart.
beat of the heart felt through the walls of the arteries.
partition or wall dividing a cavity. Such as between the right and left atria (interatrial septum) and right and left ventricles (intraventricular septum)
sinoatrial node (SA node)
pacemaker of the heart
instrument to measure blood pressure.
flow of blood form body tissue to the heart and then from the heart back to body tissues.
contraction phase of heartbeat
located between the right atrium and right ventricle; it has three leaflets, or cusps
structure in veins or in the heart that temporarily closes an opening so that blood flows in only one direction
thin-walled vessel that carries blood from the body tissues and lungs back to the heart
largest vein in the body. The superior and inferior venae cavae return blood to the right atrium of the heart
one of two lower chambers of heart
yellowish plaque, fatty substance
atrium, upper heart chamber
ventricle, lower heart chamber
abnormal heart rhythms
congenital heart disease
abnormalities in the heart at birth
coarctation of the aorta
narrowing of the aorta
patent ductus arteriosus (PDA)
passageway between the aorta and the pulmonary artery remains open after birth
small hole int he wall between the atria or the ventricles
tetralogy of Fallot
Congenital malformation involving 4 distinct heart defects 1. pulmonary artery stenosis 2. ventricular septal defect 3. shift of aorta to right 4. hypertrophy of the right ventricle.
congestive heart failure
heart is unable to pump its required amount of blood
coronary artery disease
disease of the arteries surrounding the heart
deep vein thrombosis
blood clot (thrombus) forms in a large vein, usually in a lower limb
high blood pressure
peripheral arterial disease
blockage of arteries carrying blood to the legs, arms, kidneys and other organs.
recurrent episodes of pallor and cyanosis primarily in fingers and toes.