circulatory system
DESCRIPTION
CIRCULATORY SYSTEM. BLOOD. Functions of Blood. Transport O 2 , glucose , amino acids to cells CO 2 and urea from cells to lungs and kidneys Hormone messages from endocrine gland to target. Functions of Blood. Wound Healing Platelets and proteins (ex. fibrinogen fibrin ) - PowerPoint PPT PresentationTRANSCRIPT
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CIRCULATORY SYSTEM
BLOOD
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Transport ◦ O2, glucose, amino
acids to cells◦ CO2 and urea from
cells to lungs and kidneys
◦ Hormone messages from endocrine gland to target
Functions of Blood
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Wound Healing◦ Platelets and proteins (ex. fibrinogenfibrin)
http://www.youtube.com/watch?v=--bZUeb83uU
Functions of Blood
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Heating and Cooling◦ Vasoconstriction conserves heat to core◦ Vasodilation dissipates heat at the skin surface
Functions of Blood
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Immune System◦ Bacteria◦ Fungi◦ Viruses◦ Foreign tissue rejection
Functions of Blood
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Plasma◦ Straw coloured◦ Water concentration varies (hydration level)◦ Makes up 55% of blood volume◦ Dissolved O2, CO2
Components of Blood
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Red Blood Cells (erythrocytes)◦ Made in bone marrow◦ Squished spheres◦ No nucleus◦ Filled with hemoglobin which binds with O2
Components of Blood
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White Blood Cells (leukocytes)◦ Produced in bone
marrow◦ Mature in thymus◦ Have a nucleus◦ Macrophages engulf by
phagocytosis◦ Granulocytes &
Agranulocytes◦ http://
www.youtube.com/watch?feature=player_detailpage&v=PXUNEJkjQt4
Components of Blood
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Platelets (thrombocytes)◦ Cell fragments◦ Stick to wounds in the blood vessels to initiate
clot
Components of Blood
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Activity D5 – Quick Lab: Blood Components
http://media.pearsoncmg.com/intl/pec/school/synapse/biologysource/biology11/shell/resource.php?resource=ACT_ch11_D5_blood.htm
Try This! Computer
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Examining Blood Cells Microscope Activity
Microscopes
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Blood Doping???
D6 Case Study
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CIRCULATORY SYSTEMBLOOD VESSELS
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Arteries carry blood away from the heart Veins carry blood to the heart Capillaries form a network between arteries
and veins to distribute materials to cells and collect waste.
Blood Vessels
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Thick muscular walls Strong connective tissue Round diameter No valves High pressure
Arteries
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Some muscle Some connective tissue, thicker layer than muscle Thin walls Irregular diameter Low pressure Valves prevent backflow
Veins
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No muscle layer or connective tissue Walls one cell thick Medium to low pressure
Capillaries
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Using the microscope draw an artery & vein!!
Microscope
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Pg. 302 #1~3 Pg. 304 #1,2 Pg. 306 # 1~3 Pg. 308 #1~3 Pg. 309 #2,3,5,6,13,14,16,17
Homework