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183 Cards in this Set
- Front
- Back
The 3 classification levels of blood |
connective tissue > mesenchyme > mesoderm |
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why is blood a connective tissue |
because of mesenchymal origin and composition |
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formed elements of blood |
red blood cells, white blood cells, and platelets suspended in a semi-fluid matrix |
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erythrocytes |
red blood cells |
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leukocytes |
white blood cells |
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thrombocytes |
platelets |
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blood plasma |
semi fluid matrix around cells made of fibers and soluble proteins |
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response to injury |
fibers and soluble proteins in blood matrix start clotting |
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percentage of each: 1. plasma 2. leukocytes 3. erythrocytes |
1. 55% 2. 1% 3. 45% |
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define hematocrit |
erythrocyte volume/concentration |
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hematocrit for: 1. males 2. females |
1. 42% +/- 5% 2. 45% +/- 5% |
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what are the 4 physical characteristics of blood |
1. color 2. pH 3. consistancy 4. volume
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what do the colors of blood mean: 1. scarlet/ bright red 2. dark red |
1. oxygenated 2. deoxygenated
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What classification is blood according to pH |
an alkaline
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blood pH |
7.35-7.45 |
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what is the consistency of blood? |
viscous |
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What are the 5 functions of blood |
1. carry oxygen 2. transport 3. homeostatic maintenance 4. protection 5 5. vasodilation |
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what does blood transport |
nutrients, waste, and hormones
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how does blood maintain homeostasis |
by maintaining temperature, pH, and fluid volume |
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how does blood protect |
protects against blood loss and infection |
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define vasodilation |
the widening of blood vessel walls from the relaxation of the smooth muscle in the walls |
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what is plasma made of |
90% water, 8% proteins, 2% other |
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function of water in plasma |
1. dissolving and suspending medium for solutes 2. absorbs heat
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what proteins are in plasma?
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1. albumin 60% 2. globulins 36% 3. clotting proteins 4% |
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Albumin 1. produced by what 2. function |
1. liver 2. exterts osmotic pressure to maintain water balance between blood and tissues |
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globulins
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consists of alpha, beta, and gamma |
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alpha, beta 1. produced by what 2. function |
1. liver 2. transport proteins that bind to lipids, metal ions, and fat soluble vitamins |
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gamma 1.what are they 2. come from where? |
1. antibodies 2. released by plasma cells during an immune response |
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clotting proteins 1. made of what 2. produced by what 3. function |
1. fibrinogen and prothrombin 2. liver 3. act in blood clotting |
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what are some other things found in blood plasma |
metabolic enzymes, antibacterial proteins, hormones, nitrogenous substances, nutrients, electrolytes, respiratory gases |
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non protein nitrogenous substances 1. define 2. examples |
1. by products of cellular metabolism 2. lactic acid, urea, uric cid, creatine, and ammonium salts |
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nutrients 1. define 2. examples |
1. materials absorbed by digestive tract and transported for use throughout the body 2. glucose, simple carbs, amino acids, fatty acids, glycerol, triglycerides, cholesterol, vitamins
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electrolytes 1. define 2. examples |
1. cations and anions that help to maintain plasma osmotic pressure and normal blood pH 2. Na, K, Ca, Mg, Cl, P, Sulfate, Bicarbonate |
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repiratory gases |
Oxygen and carbon dioxide |
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Oxygen in blood plasma |
most are bounded to hemoglobin inside of erythrocytes |
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carbon dioxide in blood plasma |
bound to hemoglobin in erythrocytes and a bicarbonate ion in dissolved plasma |
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Formed elements in blood |
Erythrocytes, leukocytes, and thrombocytes |
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Do erythrocytes have organelles? |
no, they are anucleate |
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Why are are erythrocytes anucleate? |
to create a biconcave shape to increase surface area and oxygen binding |
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spectrin |
supports the shape of erythrocytes and gives it flexibility |
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size of erythrocytes |
7.5um x 2.0 um
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what are erythrocytes made of? |
97% hemoglobin |
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how do erythrocytes function |
by anaerobic respiration
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amount of erythrocytes in each 1. female 2. male 3. adults |
1. 5.1-5.8 M/mm3 2. 4.3-5.2 M/mm3 3. 2.5 trillion per adult |
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functions of erythrocytes |
1. 20% CO2 transport 2. oxygen gas transport 3. other gas transport |
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hemoglobin |
made of the protein globulin surrounded by an iron bound heme ground transports oxygen in the blood |
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hemoglobin in each 1. males 2. females |
1. 14 gm/ 100 ml 2. 16 gm/ 100 ml
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difference between each 1. oxyhemoglobin 2. deoxyhemoglobin 3. carbaminohemoglobin |
1. loaded with O2 2. unloaded with out O2 3. has CO2
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other gases in erythrocytes |
Nitric Oxide (NO) and Carbon Monoxide (CO2) |
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Nitric oxide in erythrocytes |
a local hormone that controls vasodilation |
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Carbon Monoxide in erythrocytes |
permanently binds O2 to receptors |
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hematopoiesis/ erythropoiesis |
the formation of red blood cells |
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succession of hematopoiesis |
hemocytoblasts >proerythroblast (early and late stage)> normoblast>reticulocyte>erythrocyte |
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hemocytoblasts |
blood stem cells in the blood sinusoids in of red bone marrow
*does about 1 oz of blood a day=100 RBS'c |
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Proerythroblast (early) |
hormones and groeth factors transform the hemocytoblasts and they begin synthesizing ribosomes |
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Proerythroblast (late) |
they begin synthesizing hemoglobin |
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Normoblast |
cell has 34% hemoglobin and ejects out organelles |
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reticulocyte |
has some ribosomes left and some will enters the blood (about 1-2%) and the rest will eject the remaining ribosomes |
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erthyrocyte |
develops when reticulocytes eject remaining ribosomes and mature |
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2 hormones regulated by erythrocytes |
erythropoietin (EPO) and testosterone |
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erythropoietin 1. produced where 2. when is it produced 3. function 4. examples of what causes it to be released |
1. kidney 2. when there is hypoxia 3. stimulates stem cells to mature faster to increase blood cells 4. hemorrhage, increased O2 demand, reduced O2 availability, pneumonia |
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what dietary requirements do erythrocytes have? |
1. Iron 2. B complex (B12 and folic acid) 3. amino acids/ protein
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define transferrin |
protein in the blood that binds to iron and transports it around the body |
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what is iron stored as in the body? |
ferritin and hemosiderin |
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how long do erythrocytes last? |
100-120 days |
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why do erythrocytes have a limited life span? |
their lack of organelles |
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what happens to old RBCs |
they are fragmented in the spleen, are engulfed by macrophages, and its components are recycled |
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recycled parts of old red blood cells |
heme and globin |
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heme |
iron containing compound that forms the non protein part of hemoglobin |
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Where is iron stored when it becomes ferritin or hemosiderin |
the liver |
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bilirubin 1. what is it 2. function |
1.the yellow pigment that the heme degrades to in the liver 2. binds to globuline and is stored in the liver until it is used in bile |
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urobilinogen |
what bilirubin metabolized into and is eliminated in the feces |
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stercobilin |
brown pigment in feces |
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succession of iron (I Talk Fast But Got Us Snickers) |
1. Iron 2. Transferrin 3. Ferritin or Hemosiderin 4. Bilirubin 5.Globulin 6. Urobilinogen 7. Stercobilin |
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globin |
after it is taken apart from an old Red blood cell, it is catabolized into amino acids and absorbed |
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Anemia |
reduced O2 levels causing weakness, shortness of breath, and paleness, and is a symptom/ addition to another illness |
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Reduced RBC anemias |
1. hemorrhagic 2. hemolytic 3. aplastic |
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hemorrhagic |
bleeding or abnormal blood flow that can be chronic or acute
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hemolytic |
the rupture or destruction of blood cells that can be caused by hemoglobin abnormalities, viruses, bacteria, or a transfusion reaction |
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aplastic |
the inhibition of red bone marrow to make new RBCs that can be caused by bacterial infection or radiation and can be accompanied by clotting disorders
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Reduced hemoglobin disorders |
microcytic and pernicious
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microcytic |
an iron deficiency having small red blood cells (microcytes) |
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Pernicious |
caused by a B12 deficiency having large red blood cells (macrocytes) and may be associated with absorption |
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Abnormal hemoglobin disorders |
thallasemias and sickle cell |
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thallasemias |
a missing global chain caused by genetics and mostly seen in the Mediterranean and has no treatment |
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sickle cell 1.caused by what 2. what is it 3. what does it cause 4. inheritance type 5. treatments 6. benfit |
1. a base substitution mutation (genetic) 2. deformed RBC shape 3. reduced O2, clotting, pain, strokes 4. pleiotrophic 5. blood transfusion or hydroxyurea 6. immunity for malaria |
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hydroxyurea |
switches fetal HbF back on |
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Define polycemia |
increased amount of RBCs
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polycemia vera |
a bone marrow cancer where the blood makes too many RBC, increases the hematocrit to 80%, increased viscosity, dizziness |
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treatment of polycemia vera |
blood dilution |
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Are leukocytes empty cells like erythrocytes? |
no they're complete cells
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leukocyte blood volume |
1%
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What is diapedesis |
the migration of leukocytes from capillary or blood vessel opening to interstitial tissues by amoeboid movements |
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chemotaxis |
when WBCs migrate to areas because of chemicals released by damaged tissue or other cells (usually to fight bacterial infection) |
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leukocytosis |
an increase in WBCs due to infection (higher than 11k) |
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What are the 2 types of WBCs |
granulocytes and a granulocytes |
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what types of cells do granulocytes include? |
1. neutrophils 2. eosinophils 3. basophils
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neutrophils |
contain anitbiotic like proteins (enzymes, perioxidases, and defensins) that go to inflammed areas to kill bacterial or fungal infections through phagocytosis and can live from 6 hours- a few days
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eosinophils |
bilobed WBCs that contain digestive enzymesto attack parasites and phagocytize antigens lasting about 8-12 days |
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how to eosinophils phagocytize antigens |
they form antibody complexes caused to an allergic reaction |
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basophils |
have a U shaped, lobed nucleus and contain vasodilator histamine that last for a few hours to days
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types of agranulocytes |
lymphocytes and monocytes
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lymphocytes |
have large, round nucleuses, found mostly in lymphatic tissues, have 2 types (T and B) and last from hours-years |
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T lymphocytes |
immune reaction to viral and cancer cells |
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B lymphocytes |
immune reaction that gives rise to plasma cells that produces antibodies |
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monocytes |
macrophages that live for months |
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Leukopoesis |
formation of WBCs hormonally stimulated by cytokines (interleukins and colony stimulating factors) because of an immune response |
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treatment used with hematopoietic factors |
Erythropoietin and colony stimulating factors are used in stimulating new cell production in cancer and AIDS patients |
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luekopoietic factors |
stimulate the division and differentiation of hemocytoblast into the stem lines lymphoid or myeloid |
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Lymphoid |
stem cell that differentiates into the lymphocyte |
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myeloid |
stem cell that differentiates into 2 different stem cell lines: monoblast and myelocytes |
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monoblasts |
stem cells that mature into monocytes |
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myelocytes |
stem cells that mature int neutrophils, eosinophils, or basophils |
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leukopenia |
reduction of WBCs associated with glucocorticoids and anticancer |
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leukemias |
cancerous WBCs accumulating in bone marrow that deliver immature white blood cells into the blood while pushing out other lines causing arenas, hemorrhage, and reduced immunity |
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myelocytic leukemia |
affects myelocytes and is slow and chronic |
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lymphocytic leukemia |
affects lymphocytes and is fast and acute |
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mononucleosis |
associated and caused by the EBV virus characterized by a fatigue, sick, and feverish feeling |
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what are platelets made of |
fragments of megakaryocytes |
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function of platelets |
contains granules for clotting, serotonin, calcium,enzymes, and platelet derived growth factors |
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formation of platelets |
thrombopoietin simulates hemocytoblasts to become myeloids then megakaryocytes then platelets |
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megakaryocytes |
sends cytoplasmic extensions through sinusoids of the marrow which break off as platelets in blood circulation |
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function in blood vessels |
adheres to breaks or ruptures in the walls
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lifespan of platelets |
10 days
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hemostasis
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the process of halting and sealing a broken blood vessel wall stimulated by chemical signals sent by the ruptured cells of the wall |
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hemorrhage |
any instance where RBCs migrate outside the confines of the vascular tree |
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steps in hemostasis repair |
1. vascular spasm 2. platelet plug formation |
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vascular spasm |
vascorestriction occurs to reduce blood flow and in smooth muscle trauma chemicals are released by ruptured cells and pain reflexes to reduce further damage |
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platelet plug formation |
seals the opening and prepares it for clotting |
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spicules |
formed when platelets swell in an injured area and will adhere to exposed collagen fibers in the place of injury |
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Thromboxane A2 |
prostaglandin released by the platelets to stimulate the release of serotonin and ADP
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function of serotonin in clotting |
enhances vascorestriction |
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function of ADP in clotting |
attracts more platelets to do likewise to form a plug with in minutes on the wound |
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prostacyclin |
produced by endothelial cells and prevents platelet aggregation in non affected areas |
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Coagulation |
process of transforming plasma into a gel |
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vitamin k |
used by the liver to make procoagulants/ clotting factors |
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phases of coagulation |
1. prothrombin activation 2. thrombin 3. fibrin |
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prothrombin activation step |
uses phospholipid PF3 to produce the prothrombin activator in 2 pathways: intrinsic and extrinsic |
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intrinsic pathway |
slow, involved process taking place in the blood
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extrinsic pathway |
faster process occurring in interstitial spaces |
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thromboplastin |
tissue that accelerates the extrinsic pathway by allowing it to bypass many steps in the process |
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thrombin step |
enzyme coming from the plasma protein prothrombin activated by the prothrombin activator |
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fibrin step |
thrombin activates the polymerization of fibrinogen into insoluble fibrin strands making a lattice like structure which traps formed elements and makes the plasma gel like |
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calcium |
allows thrombin to activate fibrin stabilizing factor XIII |
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clot retraction |
platelets in the clot retract using actin and myosin by squeezing out serum and pulling the edges of the opening together |
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Platelet derived growth factor |
stimulates smooth muscle and fibroblast division forming a patch made of CT which will be replaced by new endothelium growth |
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fibrinolysis |
the clot/patch removed and replaced by natural tissue |
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tissue plasminogen activator |
secreted by endothelial cells to stimulate the activation of plasminogen (plasma protein) into plasmin |
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plasmin |
enzyme that will digest a fibrin clot |
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Blood clot limiting factors |
prevent unwanted blood clotting and controls the size of clots including vasospasm, antithrombin III, protein c, heparin, and vitamin e quinone |
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vasospasm |
with out it, blood flows too quickly past uninvolved areas for clotting to begin |
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antithrobin III |
inactivates free thrombin preventing unwanted clot formation |
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protein c |
inhibits the intrinsic pro coagulates |
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heparin |
enhances antithrombin III |
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vitamin e quinone |
naturally occurring coagulate |
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thromboembolytic |
unwarranted clotting that persists in a closed blood vessel making blockages that can cause ischemia and tissue death |
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thrombus |
a clot that persists in a closed blood vessel |
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ischemia and infarct |
lack of blood supply to a tissue and tissue death |
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embolus |
a thrombus that breaks free and migrates |
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what are some other factors that can cause blood stasis which facilitates blood clotting |
inflammation and arteriosclerosis |
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treatments for thromboembolytic |
aspirin, heparin, coumadin, warfarin, and bioflavinoids |
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how does aspirin help blood clotting |
it is an anti-prostaglandin that inhibits thromboxane A2 |
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Thrombocytopenia |
when there is a reduced amount of blood platelets usually caused from bone marrow cancer, radiation, and chemo |
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liver disease |
when the liver has no bile, fat digestion, vitamin k absorption, and there are no clotting factors |
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hemophilias |
sex linked genetic disorder that lacks the anti hemolytic factor and can be treated with transfusion and clotting factors |
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transfusion 1. when is it required 2. what can it cause |
1. when blood loss exceeds 30% 2. transfusion reactions |
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transfusion reactions 1. what happens to RBCs 2. what does it cause 3. what happens to hemoglobin 4. treatments |
1. they agglutinate (clump together) and lyse 2. reduced O2, clotting, ischemia, fever, nausea, vomiting 3. it is released and accumulatesin the kidney tubules causes renal shutdown and death 4. with alkaline fluids to dissolve hemoglobin with diuretics |
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stored blood 1. mixed with what 2. why is it mixed with those 3. temperature and amount of days 4. what is heparin 5. autologous sotrage |
1. citrate and oxalate salts to combine with Ca 2. to inhibit clotting 3. 4C for up to 35 days 4. added during transfusions 5. used during elective surgeries
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genetic factors of blood |
multiple alleles and codominance create 4 types of blood
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A type 1.what antigen 2. what antibodies 3. can receive what type of blood? |
1. A antigen 2. anti B antibodies 3. type A and O |
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B type 1.what antigen 2. what antibodies 3. can receive what type of blood? |
1. B antigen 2. Anti A antibodies 3. type B and O
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AB type 1.what antigen 2. what antibodies 3. can receive what type of blood? |
1. A and B antigen 2. no antibodies 3. all types
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O type 1.what antigen 2. what antibodies 3. can receive what type of blood? |
1. no antigens 2. anti A and anti B antigens 3. O type
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Rh factor |
a type of protein on the surface of red blood cells that may or not be present in people |
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steps of coming in contact with someone who is Rh- when you're Rh+ |
1. makes immune system create anti Rh antibodies 2. creates angulation reaction
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pregnancy with Rh 1. dangerous when? 2. what causes the sensitizing 3. what happens |
1. to second child of Rh- woman bearing Rh+ kids 2. combining of fetal blood and mothers blood 3. mother's immune system will make Rh- antibodies which will go into fetal circulation causing erythroblastosis fetalis |
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treatment for he Rh factor problem in pregnancies |
using RhoGAM which agglutinates Rh factors and insist immune sensitization given prior to birthing |
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treatment for infants with erythroblastosis fetalis |
blood transfusions |
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What is a CBC |
complete blood count blood test that counts RBC, WBC, and platelets |
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RBCs |
blood tests that assist in diagnosing types of anemia |
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types of RBCs |
hematocrit, hemoglobin, mean corpuscular volume, mean corpuscular Hb, mean corpuscular Hb concentration |
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what does a hematocrit test |
the % of RBCs in blood volume |
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prothrombin time |
test to see how long it takes for blood to clot |