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Pig Heart Dissection

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Owyn Medina

on 13 November 2015

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Transcript of Pig Heart Dissection

Thank You!
Front Side
How Blood Flows
By: Breyenne Bellerand and Lisa Ferrara
Pig Heart Dissection
Back Side
to the superior and inferior vena cava,
then to the right atrium
through the tricuspid valve
to the right ventricle
through the pulmonic valve
to the pulmonary artery
to the lungs
to the pulmonary veins
to the left atrium
through the mitral valve
to the left ventricle
through the aortic valve
to the aorta
to the body
Blood from the body flows:

The blood picks up oxygen in the lungs, and then flows from the lungs:
How Blood Flows
contraction of the ventricles
complete relaxation of the ventricles
Making an incision into the heart we used the superior vena cava and pulmonary veins as guides for where to cut
Viewing the Chambers

Because the blood flowing through arteries is under a far higher amount of pressure than the blood in veins. Therefore, arteries need to be able to withstand that pressure.

Arteries appear bigger in size from the outside because yes they do need to be thicker and more elastic than veins because of the amount of blood and pressure in them.... but actually the inside "tube" if you will is actually smaller than that of vein... meaning if you cut then both in half you would see a bigger opening in a vein. This is because the blood leaving the heart must go all over the body needing to be under a higher pressure than when coming back to they heart. The smaller inside of the artery makes it easier for the body to keep the blood under pressure and moving
Note that arteries have a thick layer of tissues than veins. Why is this important and how does it affect the structure of the artery as compared to the vein?

You would get a heart attack otherwise known as a cardiac arrest.

What happens if a person's cardiac muscle was not contracting as a unit?
When it is cold out and your face turns red, blood is being directed to the skin in order to warm it. How do blood vessels perform this function?
Around some blood vessels there are small mussels these mussels can direct the blood flow trough your body. if they contract there will flow less blood, if thy relax there will flow more blood trough that part of your body.
Inside the Heart
Pulmonary Veins
Superior Vena Cava
Inferior Vena Cava
Left Ventricle
Right Ventricle
Right Atrium
Left Atrium
Right Ventricle
Left Ventricle
Right Atrium
Left Atrium
Pulmonary Trunk
Left Ventricle
Papillary Muscles
Left Ventricle
Bicuspid Valve
Right Ventricle
Right Ventricle
Full transcript