Sheep Heart Dissection Guide.docx - SHEEP HEART DISSECTION \u2013 Adapted from Homelearning.com Observation External Anatomy Most heart diagrams show the

Sheep Heart Dissection Guide.docx - SHEEP HEART DISSECTION...

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SHEEP HEART DISSECTION – Adapted from Homelearning.com Observation: External Anatomy Most heart diagrams show the left atrium and ventricle on the right side of the diagram. Imagine the heart in the body of a person facing you. The left side of their heart is on their left, but since you are facing them, it is on your right. 1. Identify the right and left sides of the heart. Look closely and on one side you will see a diagonal line of blood vessels that divide the heart. The half that includes all of the apex (pointed end) of the heart is the left side. Confirm this by squeezing each half of the heart. The left half will feel much firmer and more muscular than the right side. (The left side of the heart is stronger because it has to pump blood to the whole body. The right side only pumps blood to the lungs.) 2. Turn the heart so that the right side is on your right, as if it were in your body. Examine the flaps of darker tissue on the top of the heart. These ear-like flaps are called auricles . Find the large opening at the top of the heart next to the right auricle. This is the opening to the superior vena cava , which brings blood from the top half of the body to the right atrium (the atria are the top chambers in the heart). Stick a probe down this vessel.
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  • Fall '16
  • right ventricle, right atrium

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