# Now I want
"Because of this, I want" or "However, I want."
# is the head of
"has authority over". Paul uses "head" for authority in verse 3 and also to refer to a person's actual head in verse 4 and following. Since the verses are so close together, it is likely that Paul intentionally used "head" in this way.
# a man is the head of a woman
"men are to have authority over women" or "the husband is to have authority over the wife"