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A&P II -blood

A&PII-chapter 10-blood

plasma is made of 90% of what? water
the color of plasma straw-colored
blood is composed of plasma 55% and cells(formed elements? 45%
3 main formed elements red blood cells,white blood cells, platelets
RBC's main function carries oxygen to all the cells
this gives blood its red color hemoglobin
another name for red blood cells erythrocytes
anemia decrease in the oxygen-carrying ability of the blood.
excessive or abnormal increase in the number of erythrocytes polycythemia
another name for white blood cells leukocytes
blood cell formation is called hematopoesis
never let monkeys eat bananas is a phrase to help remember what? neutrophils,lymphocytes,monocytes,esonophils,basophils
normal range of hemoglobin 12-18g
abnormally shaped hemoglobin sickle cell anemia
leukocytosis white count above 11,000, usually indicates infection
leukopenia abnormally low leukocyte levels
leukemia bone marrow becomes cancerous, turns out excess WBC
neutrophils function as phagocytes at active sites of infection
eosinophils function to kill parasitic worms and and a role in allergy atttacks
basophils release histamine at sites of inflammation
lymphocytes functions as part of the immune response
monocytes important in fighting chronic infection
hematopoiesis takes place here red bone marrow
erythrocyte production rate is controlled by a hormone called erythropoietin.
erythropoietin kidneys produce most erythropoietin as response to reduced oxygen levels in the blood
formation of WBC's and platelets colony stimulating factors and interleukins prompt bone marrow to generate leukocytes
thrombopoietin stimulates production of platelets
3 phases of hemostasis vascular spasms, platelet plug formation, coagulation
vascular spasms vasoconstriction causes blood vessel to spasms, spasms narrow the blood vessel, decreasing the blood loss
platelet plug formation collagen fibers are exposed by a break in a blood vessel, platelets become sticky and cling to fibers, anchored platelets release chemicals to attract more platelets and then the plug is formed.
coagulation injured tissues release tissue factor(TF), PF3 interacts with TF to trigger a clotting cascade, prothrombin activator converts prothrombin to thrombin., fibrin forms a clot
amount of time it takes blood to clot average 3-6 minutes
thrombus a clot in an unbroken blood vessel
embolus a thrombus that breaks away and floats freely in the blood stream.
thrombocytopenia platelet deficiency
hemophilia normal clotting factors are missing, hereditary bleeding disorder
AB blood has A and B antigens and no antibodies
B blood B antigen and antibodies A
A blood A antigens and B antibodies
O blood no antigens and antibodies A and B
Created by: anewkirk



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