- The deer heart had been in a freezer since November, and I did the dissection in February, so the 2 or 3 months in a freezer may have affected the quality of the heart. 

https://www.instructables.com/Heart-Dissection/

https://media.vwr.com/emdocs/scied/470219-676_BKLT_Heart_Dissection.pdf

https://www.biologycorner.com/anatomy/circulatory/heart/heart_dissection.html

https://www.youtube.com/watch?v=UjVmYIr74zg

https://www.themeateater.com/cook/butchering-and-processing/how-to-clean-a-venison-heart

I would like to thank my science teacher, for setting me up on this platform, and lending me some of the tools I needed.