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Definition
transportation system, heart, blood vessels |
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physical pressure on fluid, measured in mmHg |
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vessel carrying unoxygenated blood away from heart to lungs |
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vessel carrying oxygenated blood to heart from lungs |
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vessel carrying oxygenated blood from heart to the rest of the body |
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vessel carrying unoxygenated blood back to the heart from the rest of the body |
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area between systemic veins and right atrium |
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chamber where blood first enters the heart from the vena cava |
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right atrioventricular valve |
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Definition
valve between right atrium and right ventricle, also known as the tricuspid valve, hyaline cartilage electrically isolates atrium from ventricle |
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chamber where unoxygenated blood enters after being pumped from the right atrium |
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pulmonary semilunar valve |
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Definition
valve opening to the pulmonary trunk of the pulmonary veins from the right venrticle |
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chamber where oxygenated blood enters the heart from the pulmonary veins |
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left atrioventricular valve |
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Definition
valve between left atrium and left ventricle, also known as bicuspid valve or mitral valve, hyaline cartilage ring that electrically isolates the left atrium from the left ventricle |
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chamber where oxygenated blood enters after being pumped in by the left atrium |
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valve opening to the aorta from the left ventricle |
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thin layer of epithelium lining the chambers of the heart |
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later of cardiac muscle in the wall of the hearts chambers |
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layer of connective tissue surrounding the myocardium |
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cavity which the heart grows into like a fist pushing into a water balloon, filled with serous fluid |
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visceral serous pericardium |
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Definition
part of the pericardium which is somewhat fused to the epicardium |
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parietal serous pericardium |
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Definition
part of the pericardium facing the fibrous pericardium |
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tough layer of connective tissue surrounding the entire heart containing collegen fibers |
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irritation in the pericardium can lead to increased serous fluid and inflammation which will cause pressure as a result of the non stretchy fibrous pericardium, can be fatal |
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sino atrial node, pacemaker of the heart |
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conducting cells between SA node and AV node |
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atrioventricular node, causes a slight delay in the contraction impulse between atrium and ventricle to ensure atrium contracts first |
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bundle of fibers running through the interventricular septum from the AV node to the right and left bundle branches |
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fibers running up the walls of the right and left ventricle |
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fibers extending from the right and left bundle branches |
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cardiac tissue between right and left atrium |
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cardiac tissue between right and left ventricle |
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pathway between right and left atrium fused shortly before birth |
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remainence of the closing of foramen ovale |
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reflects atrial depolarization |
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Definition
reflects ventricular depolarization |
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reflects ventricular repolarization |
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lowest pressure, ventricular filling |
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highest pressure, ventricular ejection |
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end diastolic volume - volume of blood in ventricle at end of diastole |
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end systolic volume - volume of blood in ventricle at end of ejection |
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stroke volume - # of mL/beat pumped (EDV-ESV) |
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cardiac output - amount of blood pumped per minute (HR x SV) |
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tunica intema, innermost later of blood vessel walls |
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smooth muscle just outside tunica interna, thicker on arteries than on veins |
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tunica adventitia, connective tissue, contains capillaries which provide blood supply to vessels |
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blood vessels response to change in pressure - arteries have low vascular compliance, veins have high vascular compliance |
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small holes or pores like the choroid plexus |
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bigger, large holes, large enough for proteins and bacteria to move through like lymph capillaries |
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blood hydrostatic pressure - out |
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Definition
interstitial fluid hydrostatic pressure - in |
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blood osmotic pressure - in |
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Definition
interstitial fluid osmotic pressure - out |
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net filtration pressure - (out - in) or (BHP+IFOP) - (BOP+IFHP) - only 85% of fluid returns to system |
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capillaries that drain excess fluid back to bloodstream through sinusoid capillaries |
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reticular fiber that filters lymph fluid before returning it to the blood stream |
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controls BHP on capillaries - constriction decreases BHP, dialation increases BHP |
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excess interstitial fluid build up - causes: increased BHP, decreased BOP, increased cap. perm (inflam response- allows protien out of blood), decreased lymph drainage |
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capillary that has no precapillary sphincter |
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