Whether the flesh of Christ was derived from Adam?

Objections

Objection 1 : It would seem that Christ's flesh was not derived from Adam. For the Apostle says (1 Cor. 15:47): "The first man was of the earth, earthly: the second man, from heaven, heavenly." Now, the first man is Adam: and the second man is Christ. Therefore Christ is not derived from Adam, but has an origin distinct from him.
Objection 2 : Further, the conception of Christ should have been most miraculous. But it is a greater miracle to form man's body from the slime of the earth, than from human matter derived from Adam. It seems therefore unfitting that Christ should take flesh from Adam. Therefore the body of Christ should not have been formed from the mass of the human race derived from Adam, but of some other matter.
Objection 3 : Further, by "one man sin entered into this world," i.e. by Adam, because in him all nations sinned originally, as is clear from Rm. 5:12. But if Christ's body was derived from Adam, He would have been in Adam originally when he sinned: therefore he would have contracted original sin; which is unbecoming in His purity. Therefore the body of Christ was not formed of matter derived from Adam.