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41 Cards in this Set
- Front
- Back
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receives O2-poor blood from vena cava
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right atrium
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pumps O2-poor blood through pulmonary arteries to lungs for O2
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right ventricle
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receives O2-rich blood from pulmonary veins
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left atrium
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pumps O2-rich blood into aorta and all arterial branches
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left ventricle
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valve on right between atrium and ventricle
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tricuspid
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valve on left between atrium and ventricle
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bicuspid
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"lub-dub" sound of heartbeat
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closing of tricuspid (R) and bicuspid (L) valves
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myocardium
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heart tissue, striated and involuntary
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coronary vessels
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supply heart tissue with blood
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purkinje fibers
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stimulate contraction of myocardium
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sinoatrial node
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SA node, pacemaker - group of cells in R atrium that initiate contraction responsible for heartbeat
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Function of Cardiovascular System
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circulates blood to cells & organs; is pumped by heart to allow for exchange of gases, nutrients, and wastes
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blood vessels
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transport O2-rich/poor blood, include:
*arteries *veins *capillaries |
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arteries
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thick, smooth muscles that carry O2-rich blood away from heart - except pulmonary artery branch into arterioles
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veins
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thin, superficial smooth muscles that carry blood toward heart and HAVE VALVES
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capillaries
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microscopic vessels permeable to gasses
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blood
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liquid connective tissue composed of:
*plasma *red blood cells (RBC) *white blood cells (WBC) |
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erythrocyte
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red blood cells - formed in bone marrow, carries O2 on hemoglobin, life span 120 days
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leukocytes
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white blood cells - formed in marrow and lymph nodes, forms antibodies against foreign antigens
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clotting
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involves platelets, thrombin & fibrin... or their precursors which sound conveniently similar
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systemic circulation
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blood to all parts of the body from L ventricle to R atrium
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pulmonary circulation
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blood flow to lungs & back through pulmonary veins
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coronary circulation
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blood flow to coronary arteries
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hepatic portal circulation
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veins from digestion, spleen & pancreas to hepatic portal vein of liver and drained into vena cava
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cerebral circulation
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blood flow to the brain
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EKG
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electrocardiogram - graph of systole (contraction) & diastole (relaxation) of heart
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blood pressure
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systolic (peak arterial pressure)/diastolic (lowest arterial pressure) 120/80 mmHg normal
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pathway of blood to heart from body
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vena cava - RA - tricuspid valve - RV - pulmonary valve - pulmonary arteries - lungs
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pathway of blood to heart from lungs
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pulmonary vein - LA - bicuspid valve - LV - aortic semilunar valve - aorta - body
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hypertension
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HTN - high BP, systolic 140+ diastolic 90+
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anemia
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iron def, decrease in O2-carrying capacity of blood
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leukemia
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cancer of WBC, overproduction of certain leukocytes
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arteriosclerosis
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thickening of arterial walls
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murmur
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leaking heart valve, congenital
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aneurysm
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bulge in artery wall
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angina pectoris
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pain in chest and arm caused by myocardial ischemia
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varicose veins
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swelling of vein caused by inefficient valves
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atherosclerosis
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form of arteriosclerosis, plaque buildup in arteries from cholesterol and lipids leading to decreased blood flow; massage contraindicated
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myocardial infarction
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insufficient blood supply resulting in necrotic cardiac muscle tissue, caused by atherosclerosis of coronaries
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phlebitis
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inflammation of vein caused by obesity and inactivity
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Raynaud's disease
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peripheral vasoconstriction, cause unknown
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