The Heart Dissection
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The Heart Dissection. The Heart. Pocket Valve. Right Atrium. Left Atrium. Atrio-Ventricular Valve. Left Ventricle. Tendons. Right Ventricle. Septum. Aorta. Pulmonary Artery. Stick two fingers into Aorta and Pulmonary Artery. Septum. Find Aorta and Pulmonary Artery.

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The heart dissection

The Heart

Pocket Valve

Right Atrium

Left Atrium

Atrio-Ventricular Valve

Left Ventricle


Right Ventricle



Pulmonary Artery

The heart dissection

Stick two fingers into Aorta and Pulmonary Artery


Find Aorta and Pulmonary Artery

Feel for Septum between fingers

The heart dissection

Step 2: Change angle of scalpel blade, and cut down chambers on one side of heart.

Step 3: Change angle of scalpel blade again, and cut down into chambers on other side of heart, freeing septum

Step 1: CAREFULLY cut down into septum (About 5mm)

Step 4: Open up heart

Cross section of Heart

CAUTION! Scalpels are designed for cutting flesh – be VERY careful with them.

Chamber of Heart


The heart dissection

…if you feel queasy, go outside and take a few deep breaths.

  • Find the following:

  • Valves

  • Tendons

  • Identify the following:

  • Pulmonary artery

  • Pulmonary vein

  • Aorta

  • Vena cava

  • You can try pushing a finger through these vessels to follow the course of the blood through the heart

How can you distinguish the left ventricle from the right ventricle?

Make a LABELLED drawing of what you observe

And remember…