Whether the angels exercise functions of life in the bodies assumed?

Objections

Objection 1 : It would seem that the angels exercise functions of life in assumed bodies. For pretence is unbecoming in angels of truth. But it would be pretence if the body assumed by them, which seems to live and to exercise vital functions, did not possess these functions. Therefore the angels exercise functions of life in the assumed body.
Objection 2 : Further, in the works of the angels there is nothing without a purpose. But eyes, nostrils, and the other instruments of the senses, would be fashioned without a purpose in the body assumed by the angel, if he perceived nothing by their means. Consequently, the angel perceives by the assumed body; and this is the most special function of life.
Objection 3 : Further, to move hither and thither is one of the functions of life, as the Philosopher says (De Anima ii). But the angels are manifestly seen to move in their assumed bodies. For it was said (Gn. 18:16) that "Abraham walked with" the angels, who had appeared to him, "bringing them on the way"; and when Tobias said to the angel (Tob. 5:7,8): "Knowest thou the way that leadeth to the city of Medes?" he answered: "I know it; and I have often walked through all the ways thereof." Therefore the angels often exercise functions of life in assumed bodies.
Objection 4 : Further, speech is the function of a living subject, for it is produced by the voice, while the voice itself is a sound conveyed from the mouth. But it is evident from many passages of Sacred Scripture that angels spoke in assumed bodies. Therefore in their assumed bodies they exercise functions of life.
Objection 5 : Further, eating is a purely animal function. Hence the Lord after His Resurrection ate with His disciples in proof of having resumed life (Lk. 24). Now when angels appeared in their assumed bodies they ate, and Abraham offered them food, after having previously adored them as God (Gn. 18). Therefore the angels exercise functions of life in assumed bodies.
Objection 6 : Further, to beget offspring is a vital act. But this has befallen the angels in their assumed bodies; for it is related: "After the sons of God went in to the daughters of men, and they brought forth children, these are the mighty men of old, men of renown" (Gn. 6:4). Consequently the angels exercised vital functions in their assumed bodies.