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Hema part 3
| Question | Answer |
|---|---|
| What are T-Cells (lymphocytes) | destroys body’s own cells that have been taken over by virus or bacteria |
| What are B-Cells (lymphocytes) | produces antibodies (Antibodies – specialized proteins that attach to foreign invaders. Helps the body recognize and rid itself of the invaders.) |
| Thrombocytes or Platelets | -Are actually nuclear fragments of large, specialized cells called Megakaryocytes that are found in the bone marrow -Generally appear mottled, and lavender in staining - Important for clot formation |
| Steps of hemostasis? | 1)Vessel constricts 2)Thrombocytes (platelets) stick to exposed collagen fibers 3)Platelets crowd and form a platelet plug 4)Fibrinogen most abundant plasma clotting factor protein in plasma 5)Last stage is forming the Thromus (clot) |
| Practice: Study of blood? | Hematology |
| Practice: What is the function of Erythrocytes? | Transports and carries oxygen and carbon dioxide |
| Practice: Which Leukocyte is associated with immunity/antibodies? | Lymphocytes |
| Practice: What are the function of thrombocytes? | To create clots |
| Practice: What is the pH of blood? | 7.4 |
| Common venipuncture sites? | -Jugular vein -Cephalic vein -Saphenous vein -Medial femoral (cat) |
| Vacutainer | tubes are designed to create a “vacuum” to facilitate the collection of a predetermined amount of blood |
| Purple top (PTT) | Added: EDTA (anticoagulante) -CBC -Cell counts -Cell morphology |
| Tiger top (SST) | No additive but does contain separator gel -Chemistries -Most serology |
| Smaller # (gauge) = SMALLER needle T/F | False, Smaller # (gauge) = BIGGER needle |
| What gauge needle is used most often for vaccinations and routine blood draws? | 22 gauge (blue) |
| What gauge needle is used most often for SQ fluids? | 18 gauge (green) |
| What needle can be used to allow for greater flexibility when drawing blood? | Butterfly needles |
| How should you dispose of hazardous materials? | ALWAYS dispose of needles and biohazards properly!!!! (Sharps container) |
| Practice: To obtain a large sample of blood quickly you should draw from the cephalic vein T/F | False, to obtain a large sample quickly you should draw from the jugular vein. |
| Practice: The first step in hemostasis is that the blood vessel constricts T/F | True |
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