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a space called the pericardial cavity found between the parietal and visceral membranes, containing 5-30ml of pericardial fluid which lubricates the membranes allowing the heart to beat without friction
pulmonary and aortic valves that regulate the flow of blood from the ventricles into the great arteries
vascular system which supplies oxygen-rich blood to the heart by the aorta branching off into two main coronary blood vessels
left coronary artery
coronary artery with two branches that supplies blood to the left side of the heart
left anterior descending artery
a branch of the left coronary artery that supplies the apex, interventricular septum, and anterior walls of ventricles
a branch of the left coronary artery that supplies the LA and posterior wall of the LV
a thick tissue which is 80% water and 20% solid, made of a variety of cells, each with a different job; made by cells inside bones' delivers O2 and nutrients to cells and removes CO2 and wate, keeps body at right temp, carries hormones to cells, sends antibodies to fight infection, contains clotting factors helping blood to clot and tissues to heal
a disc-shaped cell with a thick rim and thin sunken center, 7.5um in diameter, 2um thick at rim, with a red pigment due to presence of hemoglobin (carries O2 and CO2); picks up O2 from lungs to deliver to tissues elsewhere; picks up CO2 from tissues to unload in lungs
a type of granulocyte which makes up 60-70% of WBCs; 4,150 cells/uL; 9-12um in diameter; nucleus has 3-5 lobes in S or C shaped array with fine reddish/violet granules in cytoplasm; carries out phagocytosis of bacteria and release of antimicrobial chemicals; number increases in bacterial infection
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