Heart Dissection

BaseBase

ApeApexx

AuriclesAuricles

Rt.

Lt.

Ear-Ear-shaped shaped

extensionextension

s of thes of the atria.atria.

The auricles wrap around The auricles wrap around to the to the anterioranterior side of the side of the heart.heart.

Anterior

The Coronary The Coronary VesselsVessels

Coronary arteries and Coronary arteries and veins supply blood to the veins supply blood to the heart itself. This is called heart itself. This is called

coronary circulationcoronary circulation

AnterioAnterior Viewr View

Coronary Arteries and Coronary Arteries and VeinsVeins

Oxygenated Oxygenated blood goes blood goes into the heart wall into the heart wall through coronary through coronary

arteriesarteries

DeoxygenatedDeoxygenated blood blood returns from the heart returns from the heart wall through coronary wall through coronary

veinsveins

Locating the Locating the Major VesselsMajor Vessels

Anterior View--Aortic ArchAnterior View--Aortic Arch

Aorta

Arising from the left ventricle of the heart is the largest artery of the body, the aorta. Rt

.Lt.

Anterior View--Aortic Anterior View--Aortic ArchArch

brachiocephalic artery

Rt.

Lt.

Lt. Lt. common common carotidcarotid

Supply blood to

the upper chest, neck,

arms, and head

Aorta

Aorta: Posterior Aorta: Posterior ViewView

Aorta

LtLt..

RtRt..

Posterior View--Vena Cavae

Superior Superior Vena Vena CavaCavaInferior

Vena Cava

Lt.

Rt.

Posterior View--Pulmonary Posterior View--Pulmonary ArteryArtery

Left Left PulmonarPulmonary Arteryy Artery

Lt.

Rt.

Posterior View--Pulmonary Posterior View--Pulmonary VeinsVeins

Pulmonary veins are inferior to pulmonary Pulmonary veins are inferior to pulmonary arteriesarteries..

LtLt..

RtRt..

Right Pulmonar

y Vein

Left Pulmonary Vein

LtLt..

RtRt..

Open Open heartheart

Posterior half

Anterior half

Rt.

Lt.

Sep

tum

Lt. AtriumRt. Atrium

aort

a

RtRt..

Lt.Lt.

Rt. Ventricle

Lt. Ventricle

Sep

tum

aort

a

Sep

tum

aort

a

Width of right

ventricular wall

Width of left

ventricular wall

Lt.Lt.RtRt..

Chordae tendine

ae

Tricuspid valve

Cusp of valve

Papillary

muscles

Septu

m

Lt.Lt.RtRt..

Mitral valve

Septu

m

Lt.Lt.RtRt..

Septu

m

cusp

Lt.Lt.RtRt..

Chordae

tendinae

Chordae

tendinae

Lt.Lt.RtRt..

Check pointCheck point

You should be able to trace pathway of blood

(begin with Right Atrium and end with the vena cava)