The flesh that was resurrected is the same flesh that he possessed before his death.
Jesus received his physical body from Mary, a decendant of David. Thus he was of the seed of David. The scriptures teach that after his resurection that he is still of the seed of David, hense it is the same flesh.
Acts chapter 2
29] Men and brethren, let me freely speak unto you of the patriarch David, that he is both dead and buried, and his sepulchre is with us unto this day.
 Therefore being a prophet, and knowing that God had sworn with an oath to him, that of the fruit of his loins, according to the flesh, he would raise up Christ to sit on his throne;
 He seeing this before spake of the resurrection of Christ, that his soul was not left in hell, neither his flesh did see corruption.
 This Jesus hath God raised up, whereof we all are witnesses.
Romans chapter 1 (compare this with 2 Timothy 2:8)
1] Paul, a servant of Jesus Christ, called to be an apostle, separated unto the gospel of God,
 (Which he had promised afore by his prophets in the holy scriptures,)
 Concerning his Son Jesus Christ our Lord, which was made of the seed of David according to the flesh;
 And declared to be the Son of God with power, according to the spirit of holiness, by the resurrection from the dead:
2 Timothy chapter 2
 Consider what I say; and the Lord give thee understanding in all things.
 Remember that Jesus Christ of the seed of David was raised from the dead according to my gospel:
 Wherein I suffer trouble, as an evil doer, even unto bonds; but the word of God is not bound
While it is the same flesh, it exists in a glorified state.
Philippians Chapter 3
 For our conversation is in heaven; from whence also we look for the Saviour, the Lord Jesus Christ:
 Who shall change our vile body, that it may be fashioned like unto his glorious body, according to the working whereby he is able even to subdue all things unto himself.