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Red Blood Cells (erythrocytes)
- Filled with hemoglobin
- Oxyhemoglobin transports oxygen and carbaminohemoglobin transports carbon dioxide
- RBC production is regulated by erythropoietin (senses oxygen)
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White Blood Cells (leukocytes)
- Protect the body from infection by destroying disease
- Classified as granulocytes and agranulocytes.
- Granulocytes: neutrophils, basophils, & eosinophils
- Nongranulocytes: lymphocytes & monocytes
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Platelets (thrombocytes)
- Prevent blood loss
- Produced in red bone marrow
- Thrombocytosis: production of platelets
- Involved in hemostasis
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Blood Types
- Type A: contains A antigen; can only receive A, O blood & can donate to type A, AB.
- Type B: contains B antigen; can only receive B, O blood & can donate to type B, AB.
- Type AB: contains both A & B antigen, can receive A, B, AB, O blood; can only donate to AB (universal recipient)
- Type O: contains no antigens, can receive O blood, can donate to type O, A, B, AB blood. (universal donar)
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Serum
- Blood plasma minus clotting proteins
- Thickness of the blood
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Approximate number of RBC in one microliter of blood
4-6 million
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How are BASOPHILS and LYMPHOCYTES different?
Basophils are granulocytes and lymphocytes are angranulocytes.
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What type of blood receives all types of blood? (Universal Recipient)
Type AB blood
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What type of blood can be donated to all types of blood?
Type O blood
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Granulocytes
- Produced in red bone marrow
- Basophils
- Eosinophils
- Neutrophils
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Angranulocytes
- Produced in lymphatic tissue
- Lymphocytes
- Monocytes
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Pernicious Anemia
Inadequate absorption of Vitamin B12
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Rh factor
- another type of antigen on the red blood cell
- must be considered when blood is transfused
- Rh (-) person cannot receive Rh (+) blood
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Rh-positive
- has the Rh antigen on the RBC membrane
- does not have anti-Rh antibodies in the plasma
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If a baby is born with HDN (hemolytic disease of the newborn), it means
The baby is Rh-positive & the mother is Rh-negative
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Which blood type receives neither A or B blood?
Type O
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Globulin
- Non-synthetic plasma protein
- Gamaglobulin- assists in fighting infection; antibiotic that is thick & painful
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Hematology
The study of blood
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Three general functions of blood:
- Transport: delivers oxygen from the lungs to every cell in the body; nutrients, ions, hormones, etc use blood as a vehicle.
- Regulation: regulation of fluid and electrolyte balance, acid-base balance and body temperature.
- Protection: Protects the body from infection; contains clotting factors that help protect from blood loss.
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Sickle Cell Anemia
- Decreased oxygenated cells & cell death
- C shape or sickle shaped
- blocked blood flow through tiny blood vessels
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What needs to be present when thrombin is formed?
Clotting
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Hemolysis
The destruction of red blood cells which leads to the release of hemoglobin from within the red blood cells into the blood plasma.
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Bilirubin
- Bile pigments that are tightly bound to albumin (various clotting factors, antibodies, & complement proteins)
- Removed from the liver into bile which reach the intestines & excreted from the body in the feces.
- What makes stool brown.
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Blood formation
- Myeloid hemopoiesis - formation in the red bone marrow - ends of long bones such as the femur and in flat & irregular bones such as the sternum, craniam bones, vertebrae, & pelvis
- Lymphoid homopoiesis - formation in the lymphatic organs
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Deficiency in WBC
Leukopenia
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What is it called when you cannot produce enough blood cells & what can it lead to?
- Myelosuppression
- It leads to anemia/aplastic anemia
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Dead neutrophils (WBC) :
Pus
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Agglutination
antigen-antibody reaction that occurs when blood is mismatched.
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Hemostasis
- Process that stops bleeding
- Involves three events::
- Blood vessel spasm: contraction of smooth muscle in blood vessel that causes decrease in blood flow to the vessel
- Formation of the platelet plug: diminishes bleeding at the injured site when blood vessel is torn.
- Blood clotting/coagulation: seals off the opening in the injured blood vessel and stops the bleeding.
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Buffy Coat
- Small layers of cells between the plasma and the RBC
- consists of WBC and platelets
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