Location and General Features of the Heart
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Transcript Location and General Features of the Heart
By: Samantha Peterson
Laura Soehngen
BJ Dean
Zach Palesch
Four Chambers
Left and Right Atrium- upper and receiving
chambers
Left and Right Ventricles- lower and
pumping chambers
Atrium means “entrance hall” in Latin
Ventricle means “little belly” in Latin
http://inspirations786.wordpress.com/2011/11/15/four-chambers-of-heart-islamic-polygamy-of-up-to-four-wives-andmiracle-of-allah/
Layers of Heart Wall
Endocardium- smooth thin layer of cells that helps to
reduce friction caused by blood that is constantly
moving through chambers
Pericardium- A sac that fits loosely over the heart
Myocardium- muscular wall constantly active and
needs a generous supply of oxygen and energy from
blood
http://paramedicine101.blogspot.com/2009/08/basic-cardiology-part-i.html
Inner Anatomy
http://science.howstuffworks.com/environmental/life/human-biology/heart2.htm
Outer Anatomy
SUPERIOR
VENA CAVA
AORTA
PULMONARY TRUNK
RIGHT
ATRIUM
PULMONARY VEINS
LEFT ATRIUM
RIGHT
VENTRICLE
LEFT VENTRICLE
http://quizlet.com/2507160/external-heart-anatomy-pics-flash-cards/
Valves of the Heart
There are 4 valves of the heart
Tricuspid valve: right side, 3 cusps
Mitral valve: 2 cusps
Pulmonary valve: between Right ventricle and
pulmonary artery, opens as Right ventricle contracts and
forces blood out to the lungs
Aortic valve: between the Left ventricle and the aorta ,
opens as Left ventricle contracts and forces blood out to
the body
Heart valves open
Cusps forced apart by pressure of blood pumped by
ventricle
Heart valve closed
Pressure causes the cusps to close and seal preventing
reverse blood flow
Bibliography
The Circulatory System by Regina Avraham
The Human Body by Steve Parker