Circulatory System9.3

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

Hemoglobin Protein which carries O2

250,000 hemoglobins in 1 red blood cell

O2

O2O2

O2

Blood clottingprotein fibersbuild the clot

emergency repair of circulatory system

plateletsseal the hole

chemicalemergencysignals

Blood donation

clotting clotting

clotting clotting

clotting clotting clotting

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

Label the Heart!

Mammalian heart

Coronary arteries

to neck & head& arms

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

Circulation Olympics!

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?