EXAM 3- Blood Disorders Vocab. Only (Ch 7) Flashcards
plasma
- pale-yellow liquid component of blood that normally holds the blood cells in whole blood in suspension.
- 55% of the body’s total blood volume.
- intravascular fluid part of extracellular fluid (all body fluid outside of cells)
hemoglobin
oxygen carrying protein containing iron that allows RBC’s to deliver O2 from lungs to all body tissues
erythrocytes
Red blood cells
globulin
and iron binding protein in hemoglobin
heme
nonprotein, iron-containing pigment together with globulin makes up hemoglobin
erythropoeisis
production of red blood cells. usually in flat bon ares-ribs,sternum, hip and skull bones
erythropoetin
a hormone, made by kidneys that stimulates RBC growth or production.
anemia
.(textbook) p152
-a condition of reduced red blood cells caused
hypoxia
(textbook) p152
- lack of oxygen
hemolysis
.(textbook) p153
-red blood cell death
renal failure(anemia of renal disease
when kidneys don’t produce adequate erythropoietin. Need serum iron labs done for determination.
pernicious anemia
- also called Vitamin B12 deficiency anemia
- inadequate B12 aborption by the protein called intrinsic factor which is made in the stomach
intrinsic factor
produced in the stomach and carries B12 to the small intestine where its absorbed in the blood stream.
splenectomy
removal of the spleen
polycythemia vera
increased RBC mass and WBC and platelet count with no physiological stimulus
- men 45-65
- unknown etiology
hemoglobinopathies
are disorders, or mutations, affecting the structure, function and production of hemoglobin. usually inherited. most common sickle cell and thalassemia.
sickelcell anemia
genetic(autosomal recessive), with abnormal hemoglobin(hemaglobinS) resulting in deformed sickle shaped rbc’s
thalassemia
- genetic
- group of inherited blood disorders with deficient synthesis of alpha or beta chains
- have mild to severe symptoms
platlets
clotting elements of blood produced in the bone marrow
hemostasis
reduced blood flow
-hemostasis requires-platletes,prothrombin,thrombin, vitsmnK, calcium for the arrest of bleeding or clotting.
thrombocytopenia
- platelet disease in GI and ureogential hemmorages and severe nose bleeds
- low platelets count in the blood. This causes bleeding into the tissues, bruising, and slow blood clotting after injury.
petechia
tiny red or purple spots caused by minute blood vessels that rupture in the skin
ecchymosis(BRUISE)
a discoloration of the skin resulting from bleeding underneath, typically caused by bruising.
coagulation factors
Clotting factors are proteins needed for normal blood clotting. With fewer platelets and clotting factors in the blood, serious bleeding can occur. DIC can cause internal and external bleeding. Internal bleeding occurs inside the body.
- formed in the LIVER
- VII, IX, X, and prothrombin require Vitamin K in order to clot