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Chapter 12 (cardiac cycle (divided into two cycles, systol and distole,…
Chapter 12
cardiac cycle
divided into two cycles, systol and distole
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both atria fill at the same time at the same time both ventricles fill at same time when heart contracts
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heart contractions
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valves are located at each end of a chamber because circulatory system is pressurized system and the valves prevent any backwards blood flow
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left ventricle is thicker because it pumps blood to the whole body while the right ventricle only pumps blood to the lungs
RH Factors
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Rh disease of newborn when mother has antibodies towards Rh positives, if pregnant those antibodies attack baby and could ive baby low blood count and then to no oxygen
transport and supply
review
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resistance of blood vessels body is six times more than resistance of the pulmonary vasculature 15-3-/8-15
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regular aerobic exercises increases density these blood vessels number of anastomoses increase as do number of locations
important with blockage of CORONARY ARTERIES because mahy have alternate routes of travel to prevent muscle damage
type a blood
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since person was born with type A blood no antibodies in his or her plasma but are anti-B antibodies
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myocytes
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even though takes longer to arrive scence infection neutrophils number greater and destroys bacteria
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chpt.12
right artrium
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blood travels from right atrium through one-way, atrioventicular valve, called tricuspid valve and into right ventricle
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chain of events are between antibody and antigen, this created an atigen-antibody reaction
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tricuspid valve prevents backflow of blood into right atrium
so blood flow through pulmonary semilunar valve to pulmonary arteries
right pulmonary artery goes to right lung, left pulmonary artery goes to left lung where vessels get smaller, eventually ending in capillaries around each air sac (alveolus) blood then returns to heart via left and right pulmonary veins
there are 50 different RB however the main focus is A, B, Rh antigens
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