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Circulatory Circulatory SystemSystem
CirculationCirculation
Heart structureHeart structure
100’s of free ppt’s from 100’s of free ppt’s from www.pptpoint.com library library
Function:To transport materials
around the body
Oxygen
Carbon dioxide
Digested food
Hormones
Waste chemicals - urea
Heat
Double CirculationDouble Circulation
Left side
Oxygenated blood from the lungs enters the heart and is pumped to the body organs and tissues
Right side
Deoxygenated blood from the body is returned to the heart to be pumped to the lungs
Systemic – to the organs of the body
Pulmonary system – up to the lungs
OXYGENCARBON DIOXIDE
Structure of the heartStructure of the heart
You need to be able to label all parts of the heart
LEFT SIDERIGHT SIDE
Left ventricle – has a thicker muscle wall than right side – why?
Right ventricle
valve
right atrium ?
Blood from lungsBlood from ?
Body organs
LEFT SIDERIGHT SIDE
Left ventricleRight ventricle
valve
right atrium Left atrium
Blood from lungsBlood from ?
Blood to the ?Blood to the ?
Beating heart – Beating heart – blood flowblood flow
The valves prevent the backflow of blood.
How do the valves work?
How many can you see?
Atrium and ventricle muscles force the blood through and out of the heart
out
in in
Can you see the 4 valves?
VALVE between the atrium and ventricle
Ventricle wall
Ventricle chamber
The endThe end
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