Blood Collection, Processing and Quality Control Adapted ...
BLOOD adapted from biologycorner
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Transcript of BLOOD adapted from biologycorner
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Functions of Blood
• Transportation
• Defense against disease
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.
Function: Transportation
• Blood transports oxygen from the respiratory system to each cell
• Blood transports nutrients from the digestive system to each cell
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Function: Transportation
Blood carries waste from cells to excretory organs
carbon dioxide goes from cells to the lungs
Other waste products go to kidneys
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Function: Defense against disease• White blood cells help to combat
disease
• http://www.youtube.com/watch?v=KxTYyNEbVU4
• http://www.youtube.com/watch?v=Z_mXDvZQ6dU
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Function: Defense against disease
• Carries antibodies to fight disease
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Blood and Blood CellsBlood is a type of CONNECTIVE TISSUE
It has two basic components:
• CELLS (rbc, wbc, platelets) = 45%
• Plasma (water, proteins, waste, carbon dioxide, oxygen, hormones, enzymes, etc) = 55%
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Three Types of Blood Cells
red blood cells (erythrocytes)
white blood cells (leukocytes)
platelets (thrombocytes)
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Erythrocytes• Contain hemoglobin• Formed in red bone
marrow• Transport oxygen
and carbon dioxide
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What do you suppose happens to your body when the erythrocyte count is too low?
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Anemia
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• What do you suppose happens to your body when the erythrocyte count is too high?
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It is a myth that deoxygenated blood appears blue.
The blood on the left is oxygenated, the right is deoxygenated blood (from a vein) Blood is never never blue.
Source: Wikipedia Commons
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WHITE BLOOD CELLS
(Leukocytes)●Formed in red bone marrow or in lymph
tissue
●Destroy invading organisms
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• What do you suppose happens to your body when the leukocyte count is too low?
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Difficult to fight infection
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What do you suppose is happening to your body when the leukocyte count is high?
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• You may be fighting an infection
• If the count is extremely high or low this can indicate leukemia
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• There are FIVE different kinds of WBCs
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Neutrophil
(nucleus has several lobes)
Active phagocytes
60% of WBC
Present in the pus of
wounds
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BasophilProduces
Heparin and
Histamines
Important in
Inflammatory
Reaction
1% WBC
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Eosinophil
Mainly
attack
parasites
2% WBC
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Monocyte
(larger cell, horseshoe shaped nucleus)
Become
macro-
phages
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Lymphocyte(nucleus is dark and takes up almost
whole cell; almost no cytoplasm seen)
Defense
against
invaders
Yield
Antibodies
30% WBC
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Left: Lymphoctye | Right: Neutrophil
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Platelets (thrombocytes)
• Tiny fragments of bone
marrow cells (not an
actual cell)• Help form blood clots
and help repair blood
vessels
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• What do you suppose can happen to your body when thrombocyte count is too low?
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Clotting is impaired
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THROMBUS – blood clot (abnormal)
EMBOLUS – when the clot moves to another place.
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What is DVT? Video: Deep Vein Thrombosishttp://www.youtube.com/watch?src_vid=gGrDAGN5pC0&annotation_id=annotation_115462&feature=iv&v=uS1RGbW8UbQ What is a Pulmonary Embolism?