Blood Flashcards
what type of tissue is blood
connective tissue
what is blood composed of
plasma and formed elements
what are the formed elements of blood
RBC, WBCs, platelets
functions of blood
1) transports o2, co2, nutrients, wastes, heat, and hormones
2) plays a part in regulation pH, body temp, and water content of cells
3) prevents blood loss through clotting and fights against infections and bacteria through WBCs
viscosity of blood
greater than water
temperature of blood
38 C, 100.4 F
pH of blood
7.35-7.45
percentage of total blood volume occupied by RBCs; measures the percentage of RBCs in the whole blood
hematocrit
blood cells are formed from what cells
pluripotent stem cells
what are the pluripotent stem cells
myeloid stem cells and lymphoid stem cells
stem cells that give rise to RBCs, platelets, and all WBCs except for lymphocytes
myeloid stem cells
stem cells that give rise to lymphocytes
lymphoid stem cells
contains the o2 carrying protein Hgb
red blood cells
life cycle of RBCs
about 120 days
erythropoiesis
production of RBCs
functions of WBCs
combat inflammation and infection
describe WBCs
nucleated cells and do not contain Hgb
2 principal types of WBCs
granular and agranular
granular WBCs (3)
neutrophils, eosinophils, basophils
agranular WBCs (2)
lymphocytes and monocytes
which particular WBCs are active in phagocytosis
neutrophils and macrophages
WBCs responsible for phagocytosis
neutrophils
WBCs that combat the effects of histamine in allergic reactions, phagocytize antigen-antibody complexes and destroy certain parasitic worms
eosinophils
WBCs that liberate heparin, histamine and serotonin in allergic reactions that intensify overall inflammatory response
basophils
