muscular cone-shaped organ the size of a fist, located behind the sternum and between the lungs. The heart consits of two upper chambers the right atrium and left atrium. Two lower chambers right and left ventricles. The left atrium receives blood returning from the body through the veins. The left artium receives blood from the lungs. the left venricle pumps blood through the arteries from the heart back to the body tissue; the right ventricle pumps blood to the lungs. The atrial septum separates the atria and the ventricular septum separates the ventricles.
consist of the tricuspid and mitral valves. Valves keep blood flowing one direction.
pulmonary and aortic valves located between the right ventricle and the pulmonary artery and between the left ventricle and the aorta, respectively
two-layer sac surronding the heart, consisting of an external fibrous and an internal serous layer
three layers of the heart
epicardium, myocardium, endocardium
covers the heart
middle, thick, muscular layer
inner lining of the heart
tubelike structures that carry blood throughout the body
blood vessels that carry blood away from the heart. all arteries, with the exception of the pulmonary artery, carry oxygen and other nutrients from the heart to the body cells.
in contrast carries carbon dioxide and other waste products from the hear to th lungs
largest artery in the body, originating at the left ventricle and descending through the thorax and abdomen
blood vessels that carry blood back to the heart.
largest veins in the body.
microscopic blood vessels that connect arterioles with venules.
composed of plasma and formed elements, such as erythrocytes, leukocytes, and thrombocytes
clear, straw-colored, liquid portion of blood in which cells are suspended. Plasma is approximately 90% water comprises approximately 55% of the total blood volume
red blood cells that carry oxygen. Erythrocytes develop in bone marrow.
white blood cells that combat infection and respond to inflammation. There are five types of white blood cells.
one of the formed elements in the blood that is responsible for aiding in the clotting process
clear, watery fluid portion of the blood that remains after a clot has formed
transparent, colorless, tissue fluid that, on entering the lymphatic system, is called lymph. Lymph contains lymphocytes and monocytes and flows in a one-way direction to the heart. Lymph is similar to blood plasma.
similar to veins, lymphatic vessels transport lymph from body tissues to the chest, where it enters the cardiovascular system. The vessels begin as capillaries spread throughout the body then merge into larger tubs that eventually become ducts in the chest. They provide a one-way flow for lymph gathered from the tissues to ducts in the chest, where lymph enters through the veins into the circulatory system.
small, spherical bodies composed of lymphoid tissue. They may be singular or grouped together along the path of the lymph vessels. The nodes filter lymph to keep substances such as bacteria and other foreign agents from entering the blood. They also produce lymphocytes.
located in the left side of the abdominal cavity between the stomach and the diaphragm. In adulthood, the spleen is the largest lymphatic organ in the body. Blood, rather that lymph, flows through the spleen. Blood is cleansed of microorganisms in the spleen. The spleen stores blood and destroys worn out red blood cells.
one of the primary lymphatic organs, it is located anterior to the ascending aorta and posterior to the sternum between the lungs. It plays an important role in the development of the body's immune system, particularly from infancy to puberty. Around puberty the thymus gland atrophies so that most of the gland is connective tissue.
vessel (usually refers to blood vessel)
lymph, lymph tissue
yellowish, fatty plaque
electricity, electrical cavity
insturment used to record; record
abnormal reduction in number
tumor composed of blood vessels
narrowing of a blood vessel
aortic stenosis (a-OR-tik ste-NO-sis)
narrowing, pertaining to aorta
harderning of the arteries
hardening of fatty plaque
condition of a slow heart
enlargement of the heart
disease of the heart muscle
inflammation of the inner lining of the heart
deficiency of blood flow
inflammation of the heart muscle
inflammation of the sac surronding the heart
inflammation of the vein
inflammation of many arteries
condition of a rapid heart (more than 100 bpm)
inflammation of a vein associated with a clot
inflammation of a valve of the heart
tumor of blood
multiple myeloma (MUL-te-pl mi-e-LO-ma)
tumors of bone marrow
abnormal reduction of all (blood) cells
abnormal condition of a (blood) clot
blood clot attached to an interior wall of an artery or vein
inflammation of lymph nodes
disease of the lymph nodes
tumor of lymphatic tissue
enlargement of the spleen
tumor of th thymus gland
acute coronary syndrome
sudden symptoms of insufficient blood supply to the heart indicating unstable angina
ballooning of a weakened portion of an arterial wall
angina pectoris (an-JI-na PEK-to-ris)
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.
any disturbance or abnormality in the heart's normal rhythmic pattern
atrial fibrilation (AFib) (A-tre-al fi-bri-LA-shun)
a cardiac arrhythmia characterized by chaotic, rapid electrical impulses in the atria.
cardiac arrest (KAR-de-ak a-REST)
sudden cessation of cardiac output and effective circulation, which requires CPR
cardiac tamponade (KAR-de-ak tam-po-NAD)
acute compression of the heart caused by fluid accumulation in the pericardial cavity
coarctation of the aorta (ko-ark-TA-shun a OR-ta)
congenital cardiac condition characterized by a narrowing of the aorta
congenital heart disease (kon-JEN-i-tal hart di-ZEZ)
heart abnormality present at birth
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 a blood through the coronary arteries to th myocardium
coronary occlusion (KOR-o-nar-e o-KLU-zhun)
obstruction of an artery of the heart.
deep vein thrombosis (DVT)
condition of thrombus in a deep vein of the body
hypertensive heart disease (HHD)
disorder of the heart caused by persistent high blood pressure
intermittent claudication (in-ter-MIT-nt klaw-di-KA-shun)
pain and discomfort in calf muscles while walking
mitral valve stenosis (MI-tral ste-NO-sis)
a narrowing of the mitral valve from scarring; usually caused by episodes
myocardial infarcation (MI)
deathof a portion of the myocardium caused by lack of oxygen resulting from an interrupted blood supply
peripheral arterial disease (PAD)
disease of the arteries in the arms and legs, resulting in narrowing or complete obstruction of the artery
rheumatic heart disease
damage to the heart muscle of heart valves caused by one or more episodes of rheumatic fever
distended or tortuous veins usually found in the lower extremities
reduction in the number of red blood cells.