circulation
Terms
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- veins
- vessels that carry blood to the heart from the venules
- heart
- the hollow muscular organ located behind the sternum and between the lungs
- cardiovascular system
- The cardiovascular system carries needed substances to cells and carries waste products away from cells.
- white blood cells
- diease fighting cells in blood
- sphygmomanometer
- a pressure gauge for measuring blood pressure
- capillaries
- the sites of exchange between blood and interstitial fluid; made of a single layer of epithelial cells; exchange of fluid through these occurs by diffusion and pressure flow through clefs with ateries and by osmotic pressure for veins.
- pressure
- the act of pressing
- force
- a push or pull
- blood pressure
- the pressure of the circulating blood against the walls of the blood vessels
- blood transfusion
- Artificial transfer of blood into the blood stream.
- heart attack
- a sudden severe instance of abnormal heart function
- atherosclerosis
- Clogging, narrowing, and hardening of the body's large arteries and medium-sized blood vessels.
- hypertension
- a common disorder in which blood pressure remains abnormally high (a reading of 140/90 mm Hg or greater)
- pacemaker
- a specialized bit of heart tissue that controls the heartbeat
- lymph nodes
- several small, oval structures that filter lymph from the lymph vessels; major locations include the cervical, axillary, and inguinal regions
- lymphatic system
- the interconnected system of spaces and vessels between body tissues and organs by which lymph circulates throughout the body
- lymph
- a thin coagulable fluid (similar to plasma but) containing white blood cells (lymphocytes) and chyle
- red blood cells
- Oxygen and Carbon Dioxide carrying cells
- plasma
- colorless watery fluid of blood and lymph containing no cells and in which erythrocytes and leukocytes and platelets are suspended
- ventricle
- a chamber of the heart that receives blood from an atrium and pumps it to the arteries
- diffusion
- the process whereby particles of liquids, gases, or solids intermingle as the result of their spontaneous movement caused by thermal agitation and in dissolved substances move from a region of higher to one of lower concentration
- atrium
- any chamber that is connected to other chambers or passageways (especially one of the two upper chambers of the heart)
- fibrin
- a white insoluble fibrous protein formed by the action of thrombin on fibrinogen when blood clots
- coronary arteries
- Carry oxygen rich blood from the aorta to the myocardium of the heart itself
- valve
- a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it
- aorta
- largest artery in the body
- arteries
- vessels that carry blood from the heart to arterioles
- hemoglobin
- iron containing substance that is found in teh red blood cells and allows the cells to pick up oxygen
- platelets
- clogs blood at a of an injury