| Question |
Answer |
| Functions of Blood: |
Transportation (gases, wastes); Protection (WBC, antibodies); Regulation (fluid, volume, pH) |
| Hemopoiesis: |
Production of blood |
| Pluripotent stem cell: |
Potential to develop into multiple cell types; in red bone marrow |
| Discoid; No DNA, not true cells, live 120 days; Most abundant |
Red Blood Cells |
| Oxygen from lungs to tissues/cells |
Function of RBCs |
| Hemoglobin: |
Small protein chain; Primarily made of iron |
| Least abundant; retain all organelles; true cells; defense; in blood a few hours then sent to tissues; larger size |
White Blood Cells |
| 2 Categories of WBCs: |
Granulocytes; Agranulocytes |
| 3 types of Granulocytes: |
Neutrophils; Eosinophils; Basophils |
| Neutrophils: |
Most abundant WBC; phagocytize; fight bacteria |
| Eosinophils: |
Count fluctuates; fight allergens; parasites; worms |
| Basophils: |
Release histamine, vasodilator (increases blood flow); Releases heparine (anticoagulent prevents clotting) |
| 2 types of Agranulocytes: |
Lymphocytes; monocytes |
| Lymphocytes: |
Abundant; Smallest size; Destroy cancerous/virus cells; Kill foreign cells (transplants); coordinate immune system |
| Monocytes: |
Large; phagocytize; get rid of dead neutrophils; activate immune system; macrophages (specific function) |
| Live 4-5 days: |
Granulocytes |
| Live weeks to decades: |
Lymphocytes |
| Can live years: |
Monocytes |
| Platelets (Thrombocytes): |
No neucleus (not true cells); fragments of stem cells |
| Functions of platelets: |
Secrete vasoconstrictors: blood clot |
| Hemostasis: |
Stops bleeding (sensation of bleeding); attract neutrophils & monocytes to site of inflammation; help stimulate other tissue for blood vessel repair |
| 55% of blood mixture: |
Plasma |
| <1% of blood mixture: |
Buffy coat; WBCs & Platelets |
| 42% of blood mixture: |
Red Blood Cells |
| Plasma: |
proteins and non-proteins |
| 3 Plasma proteins: |
Fibrinogen; Alubmin; Globulin |
| Fibrinogen: |
Sticky protein; Helps blood clots |
| Albumin: |
Most abundant; Influences blood pressure, blood volume & flow; Maintains pH; Transports solutes |
| Globulin: |
Alpha Beta Gamma; Transportation; Some blood clotting; Immunity |
| 92% of H20; Electrolytes; Nutrients; wastes (urea); Hormones; Gases |
Non-protein of Plasma |
Science Vocab 147928
