circulatory system 9.3 blood & blood cells blood is a tissue of fluid & cells plasma ...
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Blood & Blood Cells Blood is a tissue of fluid & cells
plasma liquid part of blood dissolved salts, sugars, proteins, and more
cells red blood cells (RBC)
transport O2 in hemoglobin
white blood cells (WBC) defense & immunity
platelets blood clotting
Blood Cell production Stem cells
“parent” cells in bone marrow
differentiate into many different types of cells
white bloodcells
red bloodcells
white blood cells
Red blood cells Small round cells
produced in bone marrow 5 liters of blood in body 5-6 million RBC in drop of human blood last 3-4 months (120 days)
filtered out by liver ~3 million RBC destroyed each second
Blood clottingprotein fibersbuild the clot
emergency repair of circulatory system
plateletsseal the hole
chemicalemergencysignals
Blood typeblood type
antigenon RBC
antibodiesin blood
donationstatus
A type A antigenson surface of RBC anti-B antibodies __
B type B antigenson surface of RBC anti-A antibodies __
ABboth type A & type B
antigens on surface of RBC
no antibodies universal recipient
O no antigens on surface of RBC
anti-A & anti-B antibodies
universal donor
Matching compatible blood groups is critical for blood transfusions A person produces antibodies against foreign blood antigens
http://www.nobelprize.org/educational/medicine/bloodtypinggame/game/
Blood Typing Game
Vertebrate Heart 4-Chambered heart
atria (atrium) thin wall collection chamber receive blood
ventricles thick wall pump pump blood out
rightatrium
leftatrium
rightventricle
leftventricle
Mammaliancirculation
What do blue vs. red areas represent?What do blue vs. red areas represent?
pulmonary
systemic
systemic
AV
SL
AV
Heart valves 4 valves in the heart
flaps of connective tissue prevent backflow
Atrioventricular (AV) valve between atrium & ventricle keeps blood from flowing back
into atria when ventricles contract “lub”
Semilunar valves between ventricle & arteries prevent backflow from arteries into
ventricles while they are relaxing “dub”
AV
SL
AV
Lub-dub, lub-dub 4 valves in the heart
flaps of connective tissue prevent backflow
Heart sounds closing of valves “Lub”
force blood against closed AV valves
“Dub” force of blood against
semilunar valves
Heart murmur leaking valve causes hissing sound blood squirts backward through valve
http://sciencereviewgames.com/srg/games/gong.php?id=115
Grade or No Grade?
http://sciencelearn.org.nz/Contexts/See-through-Body/Sci-Media/Animation/Label-the-heart
Label the Heart
http://www.teachingideas.co.uk/science/circulatorysystem.htm
Come in one group at a time and have to go through the heart right
Floor Activity?
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