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contents of blood plasma (3) |
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water, proteins, other solutes |
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normal blood plasma value |
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fucking DEFINE: homeostasis |
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keeping many of the constituents of blood plasma within narrow limits |
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Do RBC have a nucleus? do they have organelles? |
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what is the structure function relationship in regards to |
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the structure of the RBC allows it to have more S.A. which helps it bind moar O2 |
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explain how cyanide and CO poisoning works |
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Definition
both cyanide and CO bind the iron in heme, which prevents the hemoglobin from carrying 02. our body can't do fucking SHIT with CO or cyanide |
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explain the entire fucking process of hemopoeisis. where it becomes anuclear |
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Hemocytoblast (blood stem cell)>myeloid stem cell>progenitor cells, blast cells. >Bone marrow> proerythroblast>erythroblast>normoblast (nucleus ejected here)>reticulocyte>circulation>mature RBC |
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3 factors needed for erythropoesis (I.V.F) |
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Definition
iron, vitamin b12, folic acid |
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what causes a hemocytoblast to commit to erythrocyte path |
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what is the lifespan of an RBC |
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what will stimulato EPO-esis, explain the cycle |
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decreased blood o2>kidney ^regs epo secretion>bone marrow is like wtf ok guess I'll make moar RBCs>moar RBCs released into blood |
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what is the general definition for anemias |
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Definition
decreased 02 to the tissues |
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3 reasons why an anemic pt would actually have less o2 in their body |
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overall fewer RBCs, low hemoglobin (iron deficiency anemia), abnormal HB (sickle cell, thalessemia B) |
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Thalassemia B-abnormal amounts of what? and the RBCs have what 2 qualities? |
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Definition
abnormal amounts of HB. the RBCs are MIRCROcytic (small), and hypoCHROMIC (pale). |
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sickle cell anemia, also what causes it, and what the RBCs "more" |
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abnormally shaped blood cells can't move through bloodstream easily, this makes it harder to get o3 to tissue. cause. what causes it is a wrong AA results in abnormal HBs
the RBCs are moar fragile "hemolytic" |
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polycythemia, doing what gives this condition |
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happens when a vessel is damaged |
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release of chemicals platlets, which leads to platlet aggregation |
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5 chemicals favoring plug formation |
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Definition
1.von willebrand factor 2. serotonin 3. ADP 4.TxA2 (thrombaxane) 5. clotting factors |
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2 chems limiting clot formation |
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Definition
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draw out clotting pathway after thrombib |
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Definition
Thrombin>activates fibrinogen into loos fibrin and XIII into XIIIa>XIIIA actives loose fibrin into STABILIZED fibrin |
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what factor comes from activated platelets that is an important cofactor for clotting |
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intrinsic pathway-intrinsic to what, what gets activated due to contact to what? |
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Definition
intrinsic to blood, factor XII is activated due to CONTACT to collagen |
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extrinsic pathway-requires what from where |
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Definition
requires tissue factor from subendothelial cells in vessel wall |
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common pathway-where do the 2 pathways converge |
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Definition
they both converge on the activation of factor x |
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is the intrinsic or extrinsic pathway activated 1st? |
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when the extrinsic pathway gets activated what gets activated next on what pathway, what does this allow the intrinsic pathway to do without contact activation and factor XII |
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Definition
thrombin's positive feedback effects on the intrinsic pathway
it allows the intrinsic pathway to be activated without contact activation and factor XII |
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liver's role in blood clotting? |
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Definition
bile salts>Vitamin K>V.K. in bloof makes clotting factors. |
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1cleaves fibrinogen to fibrin 2activates clotting factors 3stimulates platelet activation |
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inactivates clotting factor which is done by activating protein c |
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antithrombin-comes from? weak or strong? made stronger where? |
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liver, weak, stronger with heperain arounf |
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heparin-what kind of cells are these pretty much |
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receptor that binds thrombin and activates protein C-->INactivates 2 clotting factors |
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Tissue plasminogen activator (TPA) |
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plasmin turns fibrin into? |
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thromboembolytic conditions-a clot forms..if it breaks loose its a what? whats it called if its lodged in the lungs |
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Definition
clot thats loose is an embolus, in lungs its a pulmonary embolism |
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Term
if there is a patent foramen ovale..where might an embolism occur? |
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Definition
in the arterial systemic system |
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