NUR 305 test 2 A

NUR 305 test 2 A - 1 Notes for Test 2 A o o Lymph nodes o...

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1 Notes for Test 2 A o Thyroid o Lymph nodes o Spleen o Liver o Bone Marrow o Blood components (RBC, WBC, and Platelets) Know page 482 o Plasma is a complex aqueous liquid containing a variety of organic and inorganic elements. o Serum is plasma that has been allowed to clot in the lab in order to remove fibrinogen and other clotting factors that may interfere with some diagnostic tests. o The plasma contains proteins “plasma proteins” that can be classified into two classes: (1) albumin and (2) globulins. Most are produced by the liver Albumin (60% of total plasma protein) -serves as a carrier molecule for both normal components of blood and drugs. Most essential role is to regulate the passage of water and solutes through the capillaries. Quick fact: blood pressure is greater in arterial than in venous blood vessels. Is the most rapidly moving protein. Maintain oncotic pressure Globulins – often classified by their properties in an electric field (serum electrophoresis). Alpha Globulins – those moving most closely to albumin Beta Globulins Gamma Globulins – those with the least movement
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Erythrocytes lack a nucleus and cytoplasmic organelles, so it cannot synthesize protein or carry out oxidative reactions (as a result it has a limited life span). o 1000 times more RBCs than WBCs Why can you live without a spleen but it increases your vulnerability to other phenomena? o Spleen – “grave yard” of RBC Spits on the bacteria that are caught in its “web” or filter The spit oxidizes gram positive bacteria so WBCs can eat the bacteria Can die with strep throat without spleen The person is immunosuppressed and must have vaccines to protect them against gram-positive diseases. Spleen : (page 486) o Site of fetal hematopoiesis, its mononuclear phagocytes filter and cleanse the blood, its lymphocytes mount an immune response to blood-borne microorganisms, and it serves as a blood reservoir. o Blood that circulates through the spleen first encounters the white splenic pump, which consists of masses of lymphoid tissue containing lymphocytes and macrophages. The white pulp forms clumps around the splenic arterioles and is the chief site of immune and phagocytic function within the spleen. Here blood-borne antigens encounter lymphocytes, initiating the immune response. Anti-coagulation should dominate in the normal body!!!! o Pumping fluid NOT clots Components needed to make a normal RBC? (page 493 chapter 20) o Iron: role is hemoglobin synthesis. Iron deficiency anemia (pale pink to red, small cell, and microcytic hypochromic anemia o Potassium : deficiency causes hemolytic anemia o Liver: stores iron for RBC (causes microcytic hypochromic anemia and Iron- deficiency anemia). o
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This note was uploaded on 07/12/2011 for the course NURSING 000 taught by Professor Clark during the Spring '11 term at Alabama.

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NUR 305 test 2 A - 1 Notes for Test 2 A o o Lymph nodes o...

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