happy valentine’s day give me one good reason we shouldn’t talk about…
TRANSCRIPT
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Happy Valentine’s Day
Give me one good reason we shouldn’t talk about…
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BLOOD
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Give life…Donate blood
We donate blood…
Some of us willingly
and others unwillingly.
But either way it looks
like this and it doesn’t
really hurt.
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• And after they are finished they have another unit of blood that someone will desperately need due to surgery, an accident, or even childbirth.
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FACT
46.5 gallons: amount of blood you could donate if you begin at age
17 and donate every 56 days until you reach 79 years old.
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Rarest Blood Type?
• The rarest blood type is the one not on the shelf when it’s needed by a patient.
• If you are really curious it is type AB-.
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Blood Facts
Blood temp = 38 degrees C (100.4 F)
Slightly Alkaline = 7.35 - 7.45 pH
Your total blood volumeFemales =Males =
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Medical Terminology
Cardiovascular systemcardio--vascular
Hematologyhemato- / hemo-
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Blood Functions
Transportgases, nutrients, wastes, hormones
RegulatepH, body temp.
Protectclots, WBCs, proteins
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Blood Component Overview
PlasmaRed Blood CellsWhite Blood CellsPlatelets
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Plasma
“Liquid” portion of blood 90% Water by volume
Plasma Proteins Albumins- maintain osmotic pressure Globulins- defense proteins (i.e. antibodies)
Fibrinogen- blood clotting
Dissolved substances Metabolites, Gases, Enzymes, Hormones, Wastes
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Plasma
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FACT
Blood or plasma that comes from people who have been paid cannot be used in human
transfusion.
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“Erythrocytes” or RBCs
Produced in red bone marrow (locations?)
Biconcave shape (>surface area : volume)
Lack nucleiPacked with cytosol and hemoglobinOxygen & Carbon dioxide carrierLife span = 120 days
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Illegal method of training…
Blood DopingDraw blood --> Train --> Draw blood…
Physiological response?Prior to competition…
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FACT
Anemic patients often need blood transfusions to increase their red
blood cell levels.
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“Leukocytes” or WBCs
Produced in bone marrow for Defense
Granular (contain cytoplasmic vesicles)
Agranular (B cells, T cells, killer cells)
Phagocytosis (bacteria & viruses) Life span = a few days
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Human White Blood Cell
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White Blood Cells
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FACT
Granulocytes, a type of white blood cell, roll along blood vessel
walls in search of bacteria to engulf and destroy.
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Platelets
“Bits” of cytoplasmLack nucleiCoagulation or clotting functionClot small vessels = platelets + fibrin threads
Life span = 5 - 9 daysHeparin, Coumadin, Aspirin (inhibit clotting)
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FACT
Cancer, transplant and trauma patients, and patients undergoing
open-heart surgery most often require platelet transfusions.
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ABO Blood Group System
Offspring receives two allelesFour general blood types =Antigens: Type ___ has ___ antigens
Antibodies: Type ___ has ___ antibodies
Rh factor =
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FACT
• Blood centers often run short of types O and B red blood cells.
• Think critically… 2 key reasons.
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Links to more video footageBlood Circulation in Veinshttp://www.fotosearch.com/crt778/001203cf/
Platelet Circulationhttp://www.fotosearch.com/ung140/u17433116/
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Blood Component Review(fill in boxes with at least 2 pieces of information)
Plasma Red Blood Cells
White Blood Cells
Platelets