Transcript CHAPTER 14
CHAPTER 14
BLOOD www.cesnur.org
TISSUE TYPE ?
CONNECTIVE FUNCTIONS ?
TRANSPORTATION BETWEEN CELLS AND ENVIRONMENT/HOMEOSTASIS FORMED ELEMENTS: CELLS, PLATELETS LIQUID: PLASMA 8% BODY WT; 5 LITERS
HEMATOCRIT
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~ 45% RBC; 1% WBC & PLATELETS; 55% PLASMA
BLOOD CELL FORMATION
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HEMATAPOIETIC STEM CELLS/HEMOCYTOBLASTS HEMATAPOIETIC GROWTH FACTORS
RED BLOOD CELL FORMATION
MULTIPOTENT STEM CELLS COLONY-STIMULATING FACTORS (CYTOKINES AND/OR HORMONES) ERYTHROPOIETIN (EPO) THROMBOPOIETIN (TPO) INTERLEUKIN-7 (IL-7) GRANULOCYTE-MACROPHAGE COLONY-STIMULATING FACTOR (GM-CSF) GRANULOCYTE COLONY STIMULATING FACTOR (G-CSF) INTERLEUKIN-5 (IL-5) INTERLEUKIN-3 MACROPHAGE COLONY-STIMULATING FACTOR (M-CSF)
RED BLOOD CELLS
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RBC CHARACTERISTICS
7.5 µm DIAMETER BICONCAVE ?
HEMOGLOBIN ??
1/3 OF TOTAL VOLUME OXYHEMOGLOBIN = BRIGHT RED ??
DEOXYHEMOGLOBIN = DARKER RED NO NUCLEUS ??
NO RNA ??
NO REPLICATION ??
ENERGY FROM GLYCOLYSIS ONLY ??
RED BLOOD CELL
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MALE: 4.6 – 6.2 MILLION/MICROLITER FEMALE: 4.2 – 5.4 MILLION/MICROLITER CHILD: 4.5 – 5.1 MILLION/MICROLITER INCREASE OR DECREASE AFFECTS OXYGEN CARRYING CAPACITY OF BLOOD
RED BLOOD CELL
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RED BLOOD CELL PRODUCTION
VITAMIN B12 AND FOLIC ACID DNA SYNTHESIS VITAMIN B12 DEFICIENCY: PARIETAL CELLS (STOMACH) NOT PRODUCING INTRINSIC FACTOR (GIF); CAN’T ABSORB VITAMIN B12 IN SMALL INTESTINE IRON MOST REUSED WHEN RBC REPROCESSED SMALL AMOUNT ABSORBED ANEMIA ??
RED BLOOD CELL PRODUCTION
FIRST: YOLK SAC, LIVER, SPLEEN AFTER BIRTH: RED BONE MARROW
DESTRUCTION OF RBCs
DAMAGED RBC RUPTURE IN LIVER OR SPLEEN MACROPHAGES DESTROY DAMAGED RBC HEMOGLOBIN HEME BILIVERDIN BILIRUBIN: EXCRETED WITH BILIVERDIN AS BILE SALTS IRON BINDS TO TRANSFERRIN TISSUE HEMOGLOBIN HEMATOPOIETIC 80% STORED AS FERRITIN IN LIVER GLOBIN AMINO ACIDS METABOLIZED BY MACROPHAGES OR SENT TO BLOOD STREAM
NEUTROPHIL
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LYMPHOCYTE
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MONOCYTE
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EOSINOPHIL
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BASOPHIL
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DENDRITIC CELL
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DENDRITIC CELL
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WHITE BLOOD CELLS
GRANULOCYTES: GRANULAR CYTOPLASM NEUTROPHILS, EOSINOPHILS, BASOPHILS AGRANULOCYTES MONOCYTES, LYMPHOCYTES
WHITE BLOOD CELLS
NEUTROPHILS: FINE GRANULES, OLDER: 2-5 LOBED NUCLEUS (PMNs), YOUNGER: C SHAPED (BANDS), FIRST AT INFECTION, 54-62% OF CIRCULATING WBCs, PHAGOCYTIZE SMALL PARTICLES: BACTERIA, FUNGI, SOME VIRUSES EOSINOPHILS: COARSE UNIFROMLY SIZED GRANULES, BILOBED, MODERATE ALLERGIC REACTIONS, ATTACK PARASITIC WORMS, 1-3% OF WBCs
BASOPHILS: SIMILAR TO EOSINOPHILS (SIZE AND NUCLEI SHAPE) , FEW, IRREGULARLY SHAPED GRANULES, RELEASE HISTAMINE ? AND HEPARIN ?
AGRANULOCYTES
MONOCYTES: LARGEST, NUCLEI MANY SHAPES, CAN BECOME MACROPHAGES IN TISSUE, CONSUME: BACTERIA, DEAD CELLS AND DEBRIES, 3-9%; LIVE WEEKS TO MONTHS LYMPHOCYTES: SMALLEST WBC, LARGE ROUND NUCLEUS, T AND B CELLS; T: DIRECTLY ATTACK CELLS: BACTERIA, TUMOR, TRANSPLANTS; B CELLS: ANTIBODIES
DENDRITIC CELLS
PRESENT IN SURFACE TISSUES (SKIN); ACTIVATED AND GO TO LYMPH NODES TO STIMULATE T AND B CELLS; SIGNAL PHAGOCYTES;
DIFF
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DIAPEDESIS
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HISTAMINE
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CHEMOTAXIS
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CHEMOTAXIS
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WHITE BLOOD CELL COUNTS
4.5 – 10 THOUSAND PER MICROLITER LEUKOCYTOSIS MORE THAN 10,000 ACUTE INFECTION; VIGOROUS EXERCISE; EMOTIONAL DISTRESS; BODY FLUID LOSS; LEUKOPENIA LESS THAN 4,500 TYPHOID FEVER; FLU; MEASLES; MUMPS; CHICKENPOX; AIDS; POLIOMYELITUS; ANEMIA; LEAD, ARSENIC, MERCURY POISONING DIFF
MEGAKARYOCYTES
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PLATLETS
FORM FROM ??
FORM PLATLETS WHEN FRAGMENTS TRAVEL THROUGH LUNGS SMALL PACKETS OF CYTOPLASM/ ½ SIZE OF RBC LIVE 10 DAYS; AMEBOID MEVEMENT 130,000 – 160,000 PER MICROLITER STICK TO BROKEN SURFACES FOR REPAIR RELEASE SEROTONIN TO CONTRACT SMOOTH MUSCLE
PLATELETS
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PLASMA
ALBUMEN GLOBULIN
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CLEAR, STRAW COLORED ~92% H2O; AND NUTRIENTS; GASES; VITAMINS; HELP REGULATE FLUID AND ELECTROLYTE BALANCE AND Ph; HOMEOSTASIS
PLASMA PROTEINS
MOST ABUNDANT DISSOLVED SUBSTANCES IN PLASMA ALBUMIN 60%/WEIGHT BUT SMALLEST SYNTHESIZED IN LIVER IMPORTANT FOR OSMOTIC PRESSURE ??
COLLOID OSMOTIC PRESSURE REGULATE WATER COMPOSITION BLOOD VOLUME CONTROLS AFFECTS BLOOD PRESSURE ALSO ACT AS CARRIERS: BIND THINGS LIKE HORMONES, BILLIVERDIN, FATTY ACIDS,
GLOBULINS 36% ALPH AND BETA GLOBULINS SYNTHESIZED BY LIVER TRANSPORT LIPIDS, FAT-SOLUBLE VITAMINS GAMMA PRODUCED BY LYMPHATIC TISSUE ANTIBODIES FIBRINOGEN 4% BLOOD CLOTTING
GASES AND NUTRIENTS
BLOOD GASES ??
OXYGEN, CARBON DIOXIDE, NITROGEN PLASMA NUTRIENTS AMINO ACIDS, SIMPLE SUGARS, NUCLEOTIDES, LIPIDS FROM SMALL INTESTINE LIPIDS: TRIGLYCERIDES, PHOSPHOLIPIDS, CHOLESTEROL/ WATER SOLUBLE ????
MUST BE CARRIED BY PLASMA PROTEINS
NONPROTEIN NITROGENOUS SUBSTANCES (NPNs)
AMINO ACIDS, UREA, URIC ACID, CREATINE, CREATININE PRODUCED BY ??
PROTEIN CATABOLISM OR ABSORPTION OF AMINO ACIDS PROTEIN CATABOLISM NUCLEIC ACID CATABOLISM CREATINE METABOLISM FORMS CREATININE GENERALLY PROTEIN INTAKE AND EXCRETION OF NITROGENOUS WASTES IS EQUAL UNLESS KIDEYS ARE NOT WORKING CORRECTLY
PLASMA ELECTROLYTES
ELECTROLYTES BECOME IONS WHEN DISSOLVED IN H2O ABSORBED BY INTESTINES OR FORMED DURING METABOLISM SODIUM, POTASSIUM, MAGNESIUM, CHLORIDE, BICARBONATE, PHOSPHATE, SULFATE IONS SODIUM AND CHLORIDE ARE MOST ABUNDANT BICARBONATE: MAINTIANING OSMOTIC PRESSURE, AND PLAMSA pH
HEMOSTASIS
STOPPAGE OF BLEEDING BY: BLOOD VESSEL SPASM PLATLET PLUG CLOTTING /image.bloodline.net
BLOOD VESSEL SPASM
VASOSPASM: SMOOTH MUSCLE CONTRACTS WHY?
REFLEX A FEW SECONDS, DIRECT STIMULTATION LASTS 30 MIN PLATELETS RELEASE SEROTONIN WHICH AGMENTS THIS REACTION
PLATELET PLUG
PLATELETS ATTACH TO COLLAGEN EXPOSED UNDER EPITHELIAL LINING COLLAGEN CAUSES THE PRODUCTION OF MANY TINY SPINOUS PROCESSES ON PLATELETS SO STICK TOGETHER TO FORM A PLUG ONLY WORKS ON SMALLER BLOOD VESSEL BREAKS
BLOOD COAGULATION/CLOT
WOUND = EXTRINSIC FACTORS FOREIGN SURFACE (PLASTIC) = INTRINSIC FACTORS CASCADE: A SERIES OF REACTIONS THAT ALL STIMULATE THE NEXT REACTION.
DEPENDS ON AMOUNT OF PROCOAGULANTS AND ANTICOAGULANTS USUALLY MORE ANTICOAGULANTS
EXTRINSIC CLOTTING MECHANISM
WOUND: RELEASES TISSUE THROMOPLASTIN (FACTOR III) WHICH EVENTUALLY CONVERTS THROMBOPLASTIN USING CALCIUM AND FORMING PROTHROMBIN ACTIVATOR PROTHROMBIN ACTIVATOR CHANGES PROTHROMBIN (ALPHA GLOBULIN) TO THROMBIN
THROMBIN CHANGES FIBRINOGEN TO FIBRIN FIBRIN STICKS TO DAMAGED SURFACES, TRAPS CELLS AND PLATELETS = CLOT POSITIVE FEEDBACK ???
GENERALLY BLOOD ONLY COAGULATES WHERE IT IS STILL OR SLOW BLOOD NORMALLY CARRIES THROMBIN AWAY KEEPING ITS CONCENTRATION TOO LOW FOR COAGULATION AND ANTITHROMBININ BLOOD AND ON VESSEL WALLS KEEPS THROMBIN FROM FORMING
INTRINSIC FACTOR
WHEN EXPOSED TO COLLAGEN OR GLASS IT STIMULATES HAGEMAN FACTOR (FACTOR XII); ACTIVATES FACTOR XI; ACTIVATES FACTOR IX; ALONG WITH FACTOR VIII AND PHOSPHOLIPIDS ACTIVATES FACTOR X FACTOR X PLUS CALCIUM IONS PRODUCES PROTHROMBIN ACTIVATOR THEN LIKE EXTRINSIC FACTOR
BLOOD CLOTS FATE
DRIES AND SHRINKS PULLING EDGES IN PLATELETS RELEASE PLATELET-DERIVED GROWTH FACTOR (PDGF) STIMULATE FIBROBLASTS AND SMOOTH MUSCLE TO REPAIR DAMAGE FIBROBLASTS PRODUCE CONNECTIVE TISSUE FIBERS TO STRENGTHEN CLOT PLASMINOGEN PICKED UP BY FIBERS PLASMINOGEN ACTIVATOR FROM LYSOSOMES CAUSES PLASMINOGEN TO BECOME PLASMIN WHICH IS AN ENZYME THAT DIGESTS FIBRIN
THROMBOSSIS: ABNORMALLY FORMED BLOOD CLOT EMBOLUS: A CLOT THAT BREAKS FREE EMBOLISM: A BLOCKAGE DUE TO AN EMBOLUS ATHEROSCLEROSIS: ACCUMULATION OF FATS ALONG BLOOD VESSEL WALLS ??
PREVENTION OF CLOTS
SMOOTH ENDOTHELIUM ENDOTHELIAL CELLS SECRETE A PROSTAGLANDIN: PROSTACYCLIN PREVENTS PLATELETS FROM STICKING THROMBIN ABSORBED BY FIBRIN THREADS SO IT CAN’T SPREAD ANTITHROMBIN: ALPHA GLOBULIN BINDS THROMBIN AND PREVENTS ACTION ON FIBRINOGEN HEPARIN FROM: MAST CELLS AND BASOPHILS (ESPECIALLY LIVER AND LUNGS) ??
INTERFERES WITH PROTHROMBIN ACTIVATOR PRODUCTION
CLOTTING
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CLOTTING
US BLOOD TYPES
Blood Type & Rh How Many Have It Frequency O Rh Positive 1 person in 3 37.4% O Rh Negative 1 person in 15 6.6% A Rh Positive 1 person in 3 35.7% A Rh Negative 1 person in 16 6.3% B Rh Positive 1 person in 12 8.5% B Rh Negative 1 person in 67 1.5% AB Rh Positive 1 person in 29 3.4% AB Rh Negative 1 person in 167 0.6%
BLOOD TYPES
ANTIGEN: AGGLUTINOGEN: FOREGIN PROTEIN ANTIBODIES: AGGLUTININS: ATTACK FOREIGN PROTEINS AGGLUTINATION: WHEN WRONG BLOOD TYPES ARE TRANSFUSED ANTIBODIES ARE FORMED IN PLASMA 2 8 MONTHS AFTER BIRTH
BLOOD TYPES
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TRANSFUSIONS
TRANSFUSIONS OF SAME BLOOD IS BEST ??
O BLOOD HAS A AND B ANTIBODIES ??
SO SHOULD BE ADDED SLOWLY REMOVING PLASMA REMOVES ANTIBODIES
BLOOD TRANSFUSIONS
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Rh FACTOR
ANTIGEN D, C, c, E ARE THE MOST IMPORTANT BUT ABOUT 50 PROTEINS ARE INVOLVED + OR – REFERS TO THE D FACTOR ONLY
ERYTHROBLASTOSIS FETALIS
WHEN MOTHER IS – AND FATHER IS POSITIVE ??
IF BABY IS POSITIVE (MOTHER -) TREAT WITH IgG anti-D ANTIBODIES (Rho(D) Immune Globulin)
BLOOD TYPING GAME
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TYPE O
Type O "Hot".
Traits
Confident and Strong-Willed, Proud, Dedicated, Sociable, Energetic, Extroverted, Frank, Realist, Showy, Flighty, Generalist, Positive, Independent, Risk-Takers, Dislike taking orders, Insecure, Stubborn & Self Centered.
Make friends easily and go with flow and grasp opportunity. Quick to start a project or chase an idea. Are good at organizing activities. May have short attention span, and expresses strong emotions. May quickly take opposite views that are deep but not always durable. Classic entrepreneurs and movers and shakers.
Express their emotions but can be swayed by other blood types. Have an intrinsic elegance. Sociable and showy. May be good at adapting to circumstances. Words come easily to them. Not self conscious and will frankly reveal inner feelings. Ambitious, but may have issues with detail.
Like to be touch and be touched by others.
TYPE A
Type A "Cool" Population
Roughly 34% of the world is A +ve and 6% A -ve.
Traits
Obedient, Careful, Sympathetic, Self-Sacrificing, Polite, Honest, Loyal, Emotional, Introverted & Nervous.
Are reserved calm and even tempered. Sensitive to public opinion. May be Introverted, shy and nervous or ill at ease with others. May be Pessimistic. Value relationships and are loyal. Hesitant to change. Nature lovers and dislike crowds - need a private place or secret hideaway. Can be indecisive. Good at team work and obey rules.
Dislike to touch or be touched by others.
TYPE B
Type B "Active" Population
Roughly 9% of the world is B +ve and 2% B -ve.
Traits
Cheerful, Optimistic, Active, Sensitive, Kind, Forgetful, unorganized, Noisy, Egocentric Energetic and have the drive to reach towards goals. May be workaholics. Not the best team players and are individualistic. Do things at one's own pace. Strong personality adventurous. Likes to get one's own way. Are Sociable and enjoy entertaining.
Like to touch or be touched by others.
TYPE AB
Type AB "Care-Free" Population
Roughly 4% of the world is AB +ve and 1% AB -ve.
Traits
Social, Easy-going, Sympathetic, Diplomatic, Outgoing, Laid-back, Creative, Unpredictable, Artistic, Flexible, Moody and Brooding.
Blend of opposites. Shy with some and bold with some. Introvert and Extrovert. Unpredictable and may seem to have calm exterior. Strong creative strain. Good at spotting problems and skirting them. Like city environment. Get bored easily. Everything they do is compelling. Never take things for granted. Appear mysterious. Contribute harmoniously to society.
Dislike to touch or be touched by others.