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183 Cards in this Set

  • Front
  • Back

The 3 classification levels of blood

connective tissue > mesenchyme > mesoderm

why is blood a connective tissue

because of mesenchymal origin and composition

formed elements of blood

red blood cells, white blood cells, and platelets suspended in a semi-fluid matrix

erythrocytes

red blood cells

leukocytes

white blood cells

thrombocytes

platelets

blood plasma

semi fluid matrix around cells made of fibers and soluble proteins

response to injury

fibers and soluble proteins in blood matrix start clotting

percentage of each:


1. plasma


2. leukocytes


3. erythrocytes

1. 55%


2. 1%


3. 45%

define hematocrit

erythrocyte volume/concentration

hematocrit for:


1. males


2. females

1. 42% +/- 5%


2. 45% +/- 5%

what are the 4 physical characteristics of blood

1. color


2. pH


3. consistancy


4. volume


what do the colors of blood mean:


1. scarlet/ bright red


2. dark red

1. oxygenated


2. deoxygenated


What classification is blood according to pH

an alkaline


blood pH

7.35-7.45

what is the consistency of blood?

viscous

What are the 5 functions of blood

1. carry oxygen


2. transport


3. homeostatic maintenance


4. protection 5


5. vasodilation

what does blood transport

nutrients, waste, and hormones


how does blood maintain homeostasis

by maintaining temperature, pH, and fluid volume

how does blood protect

protects against blood loss and infection

define vasodilation

the widening of blood vessel walls from the relaxation of the smooth muscle in the walls

what is plasma made of

90% water, 8% proteins, 2% other

function of water in plasma

1. dissolving and suspending medium for solutes


2. absorbs heat


what proteins are in plasma?


1. albumin 60%


2. globulins 36%


3. clotting proteins 4%

Albumin


1. produced by what


2. function

1. liver


2. exterts osmotic pressure to maintain water balance between blood and tissues

globulins


consists of alpha, beta, and gamma

alpha, beta


1. produced by what


2. function

1. liver


2. transport proteins that bind to lipids, metal ions, and fat soluble vitamins

gamma


1.what are they


2. come from where?

1. antibodies


2. released by plasma cells during an immune response

clotting proteins


1. made of what


2. produced by what


3. function

1. fibrinogen and prothrombin


2. liver


3. act in blood clotting

what are some other things found in blood plasma

metabolic enzymes, antibacterial proteins, hormones, nitrogenous substances, nutrients, electrolytes, respiratory gases

non protein nitrogenous substances


1. define


2. examples

1. by products of cellular metabolism


2. lactic acid, urea, uric cid, creatine, and ammonium salts

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


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

repiratory gases

Oxygen and carbon dioxide

Oxygen in blood plasma

most are bounded to hemoglobin inside of erythrocytes

carbon dioxide in blood plasma

bound to hemoglobin in erythrocytes and a bicarbonate ion in dissolved plasma

Formed elements in blood

Erythrocytes, leukocytes, and thrombocytes

Do erythrocytes have organelles?

no, they are anucleate

Why are are erythrocytes anucleate?

to create a biconcave shape to increase surface area and oxygen binding

spectrin

supports the shape of erythrocytes and gives it flexibility

size of erythrocytes

7.5um x 2.0 um


what are erythrocytes made of?

97% hemoglobin

how do erythrocytes function

by anaerobic respiration


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

functions of erythrocytes

1. 20% CO2 transport


2. oxygen gas transport


3. other gas transport

hemoglobin

made of the protein globulin surrounded by an iron bound heme ground transports oxygen in the blood

hemoglobin in each


1. males


2. females

1. 14 gm/ 100 ml


2. 16 gm/ 100 ml


difference between each


1. oxyhemoglobin


2. deoxyhemoglobin


3. carbaminohemoglobin

1. loaded with O2


2. unloaded with out O2


3. has CO2


other gases in erythrocytes

Nitric Oxide (NO) and Carbon Monoxide (CO2)

Nitric oxide in erythrocytes

a local hormone that controls vasodilation

Carbon Monoxide in erythrocytes

permanently binds O2 to receptors

hematopoiesis/ erythropoiesis

the formation of red blood cells

succession of hematopoiesis

hemocytoblasts >proerythroblast (early and late stage)> normoblast>reticulocyte>erythrocyte

hemocytoblasts

blood stem cells in the blood sinusoids in of red bone marrow



*does about 1 oz of blood a day=100 RBS'c

Proerythroblast (early)

hormones and groeth factors transform the hemocytoblasts and they begin synthesizing ribosomes

Proerythroblast (late)

they begin synthesizing hemoglobin

Normoblast

cell has 34% hemoglobin and ejects out organelles

reticulocyte

has some ribosomes left and some will enters the blood (about 1-2%) and the rest will eject the remaining ribosomes

erthyrocyte

develops when reticulocytes eject remaining ribosomes and mature

2 hormones regulated by erythrocytes

erythropoietin (EPO) and testosterone

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

what dietary requirements do erythrocytes have?

1. Iron


2. B complex (B12 and folic acid)


3. amino acids/ protein


define transferrin

protein in the blood that binds to iron and transports it around the body

what is iron stored as in the body?

ferritin and hemosiderin

how long do erythrocytes last?

100-120 days

why do erythrocytes have a limited life span?

their lack of organelles

what happens to old RBCs

they are fragmented in the spleen, are engulfed by macrophages, and its components are recycled

recycled parts of old red blood cells

heme and globin

heme

iron containing compound that forms the non protein part of hemoglobin

Where is iron stored when it becomes ferritin or hemosiderin

the liver

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

urobilinogen

what bilirubin metabolized into and is eliminated in the feces

stercobilin

brown pigment in feces

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

globin

after it is taken apart from an old Red blood cell, it is catabolized into amino acids and absorbed

Anemia

reduced O2 levels causing weakness, shortness of breath, and paleness, and is a symptom/ addition to another illness

Reduced RBC anemias

1. hemorrhagic


2. hemolytic


3. aplastic

hemorrhagic

bleeding or abnormal blood flow that can be chronic or acute


hemolytic

the rupture or destruction of blood cells that can be caused by hemoglobin abnormalities, viruses, bacteria, or a transfusion reaction

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


Reduced hemoglobin disorders

microcytic and pernicious


microcytic

an iron deficiency having small red blood cells (microcytes)

Pernicious

caused by a B12 deficiency having large red blood cells (macrocytes) and may be associated with absorption

Abnormal hemoglobin disorders

thallasemias and sickle cell

thallasemias

a missing global chain caused by genetics and mostly seen in the Mediterranean and has no treatment

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

hydroxyurea

switches fetal HbF back on

Define polycemia

increased amount of RBCs


polycemia vera

a bone marrow cancer where the blood makes too many RBC, increases the hematocrit to 80%, increased viscosity, dizziness

treatment of polycemia vera

blood dilution

Are leukocytes empty cells like erythrocytes?

no they're complete cells


leukocyte blood volume

1%


What is diapedesis

the migration of leukocytes from capillary or blood vessel opening to interstitial tissues by amoeboid movements

chemotaxis

when WBCs migrate to areas because of chemicals released by damaged tissue or other cells (usually to fight bacterial infection)

leukocytosis

an increase in WBCs due to infection (higher than 11k)

What are the 2 types of WBCs

granulocytes and a granulocytes

what types of cells do granulocytes include?

1. neutrophils


2. eosinophils


3. basophils


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


eosinophils

bilobed WBCs that contain digestive enzymesto attack parasites and phagocytize antigens lasting about 8-12 days

how to eosinophils phagocytize antigens

they form antibody complexes caused to an allergic reaction

basophils

have a U shaped, lobed nucleus and contain vasodilator histamine that last for a few hours to days


types of agranulocytes

lymphocytes and monocytes


lymphocytes

have large, round nucleuses, found mostly in lymphatic tissues, have 2 types (T and B) and last from hours-years

T lymphocytes

immune reaction to viral and cancer cells

B lymphocytes

immune reaction that gives rise to plasma cells that produces antibodies

monocytes

macrophages that live for months

Leukopoesis

formation of WBCs hormonally stimulated by cytokines (interleukins and colony stimulating factors) because of an immune response

treatment used with hematopoietic factors

Erythropoietin and colony stimulating factors are used in stimulating new cell production in cancer and AIDS patients

luekopoietic factors

stimulate the division and differentiation of hemocytoblast into the stem lines lymphoid or myeloid

Lymphoid

stem cell that differentiates into the lymphocyte

myeloid

stem cell that differentiates into 2 different stem cell lines: monoblast and myelocytes

monoblasts

stem cells that mature into monocytes

myelocytes

stem cells that mature int neutrophils, eosinophils, or basophils

leukopenia

reduction of WBCs associated with glucocorticoids and anticancer

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

myelocytic leukemia

affects myelocytes and is slow and chronic

lymphocytic leukemia

affects lymphocytes and is fast and acute

mononucleosis

associated and caused by the EBV virus characterized by a fatigue, sick, and feverish feeling

what are platelets made of

fragments of megakaryocytes

function of platelets

contains granules for clotting, serotonin, calcium,enzymes, and platelet derived growth factors

formation of platelets

thrombopoietin simulates hemocytoblasts to become myeloids then megakaryocytes then platelets

megakaryocytes

sends cytoplasmic extensions through sinusoids of the marrow which break off as platelets in blood circulation

function in blood vessels

adheres to breaks or ruptures in the walls


lifespan of platelets

10 days


hemostasis


the process of halting and sealing a broken blood vessel wall stimulated by chemical signals sent by the ruptured cells of the wall

hemorrhage

any instance where RBCs migrate outside the confines of the vascular tree

steps in hemostasis repair

1. vascular spasm


2. platelet plug formation

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

platelet plug formation

seals the opening and prepares it for clotting

spicules

formed when platelets swell in an injured area and will adhere to exposed collagen fibers in the place of injury

Thromboxane A2

prostaglandin released by the platelets to stimulate the release of serotonin and ADP


function of serotonin in clotting

enhances vascorestriction

function of ADP in clotting

attracts more platelets to do likewise to form a plug with in minutes on the wound

prostacyclin

produced by endothelial cells and prevents platelet aggregation in non affected areas

Coagulation

process of transforming plasma into a gel

vitamin k

used by the liver to make procoagulants/ clotting factors

phases of coagulation

1. prothrombin activation


2. thrombin


3. fibrin

prothrombin activation step

uses phospholipid PF3 to produce the prothrombin activator in 2 pathways: intrinsic and extrinsic

intrinsic pathway

slow, involved process taking place in the blood


extrinsic pathway

faster process occurring in interstitial spaces

thromboplastin

tissue that accelerates the extrinsic pathway by allowing it to bypass many steps in the process

thrombin step

enzyme coming from the plasma protein prothrombin activated by the prothrombin activator

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

calcium

allows thrombin to activate fibrin stabilizing factor XIII

clot retraction

platelets in the clot retract using actin and myosin by squeezing out serum and pulling the edges of the opening together

Platelet derived growth factor

stimulates smooth muscle and fibroblast division forming a patch made of CT which will be replaced by new endothelium growth

fibrinolysis

the clot/patch removed and replaced by natural tissue

tissue plasminogen activator

secreted by endothelial cells to stimulate the activation of plasminogen (plasma protein) into plasmin

plasmin

enzyme that will digest a fibrin clot

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

vasospasm

with out it, blood flows too quickly past uninvolved areas for clotting to begin

antithrobin III

inactivates free thrombin preventing unwanted clot formation

protein c

inhibits the intrinsic pro coagulates

heparin

enhances antithrombin III

vitamin e quinone

naturally occurring coagulate

thromboembolytic

unwarranted clotting that persists in a closed blood vessel making blockages that can cause ischemia and tissue death

thrombus

a clot that persists in a closed blood vessel

ischemia and infarct

lack of blood supply to a tissue and tissue death

embolus

a thrombus that breaks free and migrates

what are some other factors that can cause blood stasis which facilitates blood clotting

inflammation and arteriosclerosis

treatments for thromboembolytic

aspirin, heparin, coumadin, warfarin, and bioflavinoids

how does aspirin help blood clotting

it is an anti-prostaglandin that inhibits thromboxane A2

Thrombocytopenia

when there is a reduced amount of blood platelets usually caused from bone marrow cancer, radiation, and chemo

liver disease

when the liver has no bile, fat digestion, vitamin k absorption, and there are no clotting factors

hemophilias

sex linked genetic disorder that lacks the anti hemolytic factor and can be treated with transfusion and clotting factors

transfusion


1. when is it required


2. what can it cause

1. when blood loss exceeds 30%


2. transfusion reactions

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

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


genetic factors of blood

multiple alleles and codominance create 4 types of blood


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

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


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


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


Rh factor

a type of protein on the surface of red blood cells that may or not be present in people

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


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

treatment for he Rh factor problem in pregnancies

using RhoGAM which agglutinates Rh factors and insist immune sensitization given prior to birthing

treatment for infants with erythroblastosis fetalis

blood transfusions

What is a CBC

complete blood count blood test that counts RBC, WBC, and platelets

RBCs

blood tests that assist in diagnosing types of anemia

types of RBCs

hematocrit, hemoglobin, mean corpuscular volume, mean corpuscular Hb, mean corpuscular Hb concentration

what does a hematocrit test

the % of RBCs in blood volume

prothrombin time

test to see how long it takes for blood to clot