Sentence:  The "brachial artery" may be exposed and tied in any part of its course, the border of the biceps and coraco-brachialis serving as a guide to its situation. When the arm is drawn away from the side, and slightly <WSD>everted</WSD>, the hand being supinated, the seat of the operation is fairly brought into view. 
Meaning of the word marked with <WSD> tags:  To turn inside out (like a pocket being emptied) or outwards.