components of blood create a new folder in ebackpack- cardiovascular system upload 12.02 “intro to...
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Components of Blood
Create a new folder in eBackpack-Cardiovascular System
Upload 12.02 “Intro to Blood Notes”
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Erythrocytes(Red Blood Cells)
Anatomy-biconcave
Physiology-more surface area to carry oxygen
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ErythrocytesAnatomy
-1/3 hemoglobin by volume
Physiology-protein pigment which results in red color of blood and helps transport oxygen
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Erythrocytes
Anatomy-lack nuclei
--elastic and flexible
-formed in red bone marrow
Physiology-cannot reproduce
-can pass through narrow capillaries
-4,200,000 – 6,200,000 per mm3
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ErythrocytesAnatomy
-live about 120 days
Physiology
-become less elastic and get damaged when passing through capillaries
-macrophages (especially in the liver) destroy injured or old rbc’s
The macrophage destroys the red blood cells that no longer have their biconcave shape. This person probably has malaria.
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Erythrocytes under the microscope
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Leucocytes(White Blood Cells)
Anatomy5 types1. neutrophil
Physiology
Phagocitize (engulf) small particles
Click on the picture to watch the video
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LeukocytesAnatomy
2. Eosinophil
Physiologykills parasites and helps control inflammation and allergic reactions
Can you identify this parasite?
It’s called a pin worm and it is commonly found in your anus! They make you itch.
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LeukocytesAnatomy
Basophil
Physiology
releases heparin (prevents blood clots)and histamine (during an allergy it causes runny nose and watery eyes)
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LeukocytesAnatomy
Monocyte
Physiologyphagocytizes large particles
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LeukocytesAnatomy
Lymphocyte
Physiologyprovides immunity
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Leukocytes
Anatomyformed in red bone marrow
Physiology5,000-10,000 mm3
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Thrombocytes(Platelets)
AnatomyCell fragment
lack a nuclei
live for 10 days
formed in red bone marrow
half the size of rbc
PhysiologyControls blood loss from broken blood vessels
130,000-360,000 mm3
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Important fact
*Rbc’s, wbc’s and platelets make up 45% of the blood and are collectively known as the “formed elements”
erythrocyte (left), thrombocyte(center), and leukocyte (right)
Electron microscope image
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Blood Plasma
Anatomy
92 % water
8% dissolved organic molecules
Physiology
transports nutrients, gases, and vitamins
regulates fluid and electrolyte balance
maintains favorable pH
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Important fact
Plasma makes up 55% of the blood.
You are now ready to complete the introductory homework.