If transubstantiation is true, did Jesus eat some of His own body and drink some of His own blood?

Jesus sent disciples to prepare a place so He could eat the Passover with them. (Luke 22:8). He did eat with them at this meal (Mark 14:18). I could not find any indication that after having blessed and broken the bread and, declaring that is was his body and distributing it to the disciples, Jesus Himself ate some of it. Since this was a repurposing of the Passover, which Jesus expressed eagerness to eat with them, it seems at least possible that He did partake. There is some more direct indication, however, that He did partake of the wine: > Verily I say unto you, I will drink no more of the fruit of the vine, until that day that I drink it new in the kingdom of God. - Mark 14:25. My questions are for those who hold to the doctrine of transubstantiation: 1) Did Jesus partake of the elements of this first Lord's Supper and, if so, 2) Did He eat His own flesh and drink His own blood?