What does "ha'Cheilev ha'Mechaseh es ha'Kerev" refer to?
Rashi: It refers exclusively to the membrane that covers the Keres (the innards).
Ramban: Since the Torah adds the word "Kol", it incorporates the membrane and a second layer of Cheilev that covers the innards. 1
What does the Torah mean when it writes "ve'Eis ha'Yoseres al ha'Kaveid "?
Rashi: It means that Moshe was to burn some of the liver on the Mizbe'ach together with the lobe of the liver (the diaphragm).