47-1 Flashcards
aorta
the largest artery in the human body; carries blood from the left ventricle to systemic circulation
aortic vavle
the semilunar valve on the left side of the heart
arteriole
a branch of an artery that gives rise to capillaries
artery
a vessel that carries blood away from the heart to the body’s organs
atherosclerosis
a disease characterized by the buildup of fatty materials on the interior walls of the arteries
atrioventricular node
a group of nerves in the heart that functions in the heartbeat
atrioventricular valve
a one-way valve separating each atrium from the ventricle beneath it
atrium
an anterior chamber of the heart
blood pressure
the force that blood exerts against the walls of a blood vessel
capillary
the smallest vessel in the blood vessel network
cardiovascular system
the blood, the heart, and the blood vessels
circulatory system
the system that distributes oxygen and nutrients to cells in all parts of the body
coronary circulation
a subsystem of systemic circulation that supplies blood to the heart
diastole
a phase in the heartbeat during which the ventricles relax and the blood flows in from the atria
diastole pressure
the pressure maintained in the blood when the ventricles are relaxed
hepatic portal circulation
the system of blood movement through the digestive tract and liver
hypertension
high blood pressure
inferior vena cava
the large vein carrying blood from the lower part of the body
lymph
lymph the clear fluid that bathes each cell and transfers needed substances and wastes back and forth between the blood and the cells; fluid of the lymphatic system
lymphatic system
a series of one-way vessels that carry intercellular fluid from tissues to the bloodstream
lymphocyte
a type of white blood cell in two primary forms, T cells and B cells
mitral valve
bicuspid valve; the atrioventricular valve on the left side of the heart
pacemaker
the sinoatrial node that regulates the contraction of the heart
pericardium
the tough saclike membrane that surrounds the heart
