the system made up of the heart (cardio) and the blood vessels (vascular); the circulatory system.
the two upper chambers of the heart. There is a right atrium (which receives the unoxygenated blood returning from the body) and a left atrium (which receives oxygenated blood returning from the lungs).
the two lower chambers of the heart. There is a right ventricle (which sends oxygen-poor blood to the lungs) and a left ventricle (which sends oxygen-rich blood to the body).
the superior vena cava and the inferior vena cava. These two major veins return blood from the body to the right atrium.
structure that opens and closes to permit the flow of a fluid in only one direction.
cardiac conduction system
a system of specialized muscle tissues which conduct electrical impulses that stimulate the heart to beat.
any blood vessel carrying blood away from the heart.
blood vessels that supply the muscle of the heart (myocardium).
the vessels that carry blood from the right ventricle of the heart to the lungs.
the large neck arteries, one on each side of the neck, that carry blood from the heart to the head.
the major artery supplying the leg.
artery of the upper arm; the site of the pulse checked during infant CPR.
artery of the lower arm. It is felt when taking the pulse at the wrist.
posterior tibial artery
artery supplying the foot, behind the medial ankle.
dorsalis pedis artery
artery supplying the foot, lateral to the large tendon of the big toe.
the smallest kind of artery.
a thin-walled, microscopic blood vessel where the oxygen/ carbon dioxide and nutrient/ waste exchange with the body's cells takes place.
any blood vessel returning to the heart.
vessels that carry oxygenated blood from the lungs to the left atrium of the heart.
fluid portion of the blood.
red blood cells
carry oxygen to and carbon dioxide away from the cells.
white blood cells
produce substances that help the body fight infection.
rhythmic beats caused as waves of the blood move through and expand the arteries.
components of the blood; membrane-enclosed fragments of specialized cells.
the radial, brachial, posterior, tibial, and dorsalis pedis pulses, which can be felt at peripheral (outlying) points of the body.
the carotid and femoral pulses, which can be felt in the central part of the body.
the pressure caused by the blood exerting force against the walls of blood vessels. Usually arterial blood pressure is measured.
systolic blood pressure
pressure created in the arteries when the left ventricle contracts and forces blood out into circulation.
diastolic blood pressure
pressure in the arteris when the left ventricle is refilling.
supply of oxygen to and removal of wastes from the cells and tissues of the body as a result of the flow of blood through the capillaries.
inadequate perfusion of the cells and tissues of the body caused by insufficient flow of blood through the capillaries. aka shock