HEART DISSECTION

• Heart Dissection : 8 Steps (with Pictures) - Instructables
  
• Heart Dissection Walk Through (biologycorner.com)
  
• Microsoft Word - SOP Performing a heart dissection final_DB.docx (asta.edu.au)
  
• Sheep Heart Dissection Lab for High School Science | HST (homesciencetools.com)
  

DISSECTION PROCEDURES

1. All students must wear goggles and gloves if touching animal matter.
   
   
2. Scalpels are sharp. Watch teacher for correct use.
   
   
3. When finished, please wrap all waste and gloves in newspaper and put in special garbage bag.
   
   
4. Wipe down tables with disinfectant spray.
   
   
5. Wash your hands with soap and water.  Add sanitizer gel.

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Blood from the tissues → superior and inferior vena cava → right atrium → tricuspid valve → right ventricle → pulmonary semilunar valve → pulmonary artery → lungs → pulmonary veins → left atrium → bicuspid (mitral) valve → left ventricle → aortic semilunar valve → aorta → body tissue.

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There are many things to look and learn about inside the heart. Some of the things you might try to find include:

• Valves -- the tricuspid and bicuspid valve are easily visible and divide the atriums from the ventricles.
• Chordae Tendinae -- the "heartstrings," which pull on valves to open or close them. Try it out with a pair of tweezers.
• Papillary Muscle -- just like in our limbs, tendons need muscles to pull them, and those are the densely packed papillary muscles. These are fascinating, as unlike our other muscles, they are not attached to the skeletal structure.
• Compare Ventricle Walls -- if you look at the right and left ventricles, one is much thicker than the other. Can you see which one? In the left ventricle, the heart has to contract to move blood throughout the whole body, so it has to have more muscle than the right, which brings blood a short distance to the lungs.

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