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muscular cone-shaped organ the size of a fist, located behind the sternum (breast bone) and between the lungs. The pumping action of this organ circulates blood throughout the body.
The lower chambers of the heart that pump blood through the arteries from the heart back to the body tissues.
pulmonary and aortic valves located between the right ventricle and the pulmonary artery between the left ventricle and aorta
two-layer sac consisting of an external fibrous and internal serous layer. The serous layer secretes a fluid that facilitates movement of the heart. This layer also covers the heart and is called the epicardium.
blood vessels that carry blood AWAY from the heart; oxygen and nutrients from the heart to the body cells
largest artery in the body, originating at the left ventricle and descending through the thorax and abdomen
microscopic blood vessels that connect arterioles with venules. Materials are passed between the blood and tissue through capillary walls.
clear, straw-colored, liquid portion of blood in which cells are suspended. Plasma is ~90% water and comprises 55% of the total blood volume
white blood cells tat combat infection and response to inflammation; there are five types
one of the formed elements in the blood that is responsible for aiding in the clotting process
transparent, colorless, tissue fluid that, on entering the lymphatic system, is called lymph; contains lymphocyte and monocytes and flows in one-way direction to the heart.
small, spherical bodies composed of lymphoid tissue; filter lymph to keep substances such as bacteria and other foreign agents from entering the blood
located in the left-side of the abdominal cavity between the stomach and diaphragm; the largest lymphatic organ in the body; stores blood and destroys worn out RBCs
acute coronary syndrome (ACS)
sudden symptoms of insufficient blood supply to the heart indicating unstable angina or acute myocardial infarction
chest pain, which may radiate to the left arm and jaw, that occurs when there is an insufficient supply of blood to the heart muscle
atrial fibrillation (AFib)
a cardiac arrhythmia characterized by chaotic, rapid electrical impulses in the atria.
acute compression of the heart caused by fluid accumulation in the pericardial cavity
congestive heart failure (CHF)
inability of the heart to pump enough blood through the body to supply the tissues and organs with nutrients and oxygen
coronary artery disease (CAD)
a condition that reduces the flow of blood through the coronary arteries to the myocardium, denying the myocardial tissue of sufficient oxygen and nutrients to function fully; caused by artherosclerosis
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