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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 Presentation
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CIRCULATORY SYSTEM
BLOOD
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
Wound Healing◦ Platelets and proteins (ex. fibrinogenfibrin)
http://www.youtube.com/watch?v=--bZUeb83uU
Functions of Blood
Heating and Cooling◦ Vasoconstriction conserves heat to core◦ Vasodilation dissipates heat at the skin surface
Functions of Blood
Immune System◦ Bacteria◦ Fungi◦ Viruses◦ Foreign tissue rejection
Functions of Blood
Plasma◦ Straw coloured◦ Water concentration varies (hydration level)◦ Makes up 55% of blood volume◦ Dissolved O2, CO2
Components of Blood
Red Blood Cells (erythrocytes)◦ Made in bone marrow◦ Squished spheres◦ No nucleus◦ Filled with hemoglobin which binds with O2
Components of Blood
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
Platelets (thrombocytes)◦ Cell fragments◦ Stick to wounds in the blood vessels to initiate
clot
Components of Blood
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
Examining Blood Cells Microscope Activity
Microscopes
Blood Doping???
D6 Case Study
CIRCULATORY SYSTEMBLOOD VESSELS
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
Thick muscular walls Strong connective tissue Round diameter No valves High pressure
Arteries
Some muscle Some connective tissue, thicker layer than muscle Thin walls Irregular diameter Low pressure Valves prevent backflow
Veins
No muscle layer or connective tissue Walls one cell thick Medium to low pressure
Capillaries
Using the microscope draw an artery & vein!!
Microscope
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