Which of the following anatomic structures is indicated by the number 2 in Figure 2-7? (A) Talus (B) Medial malleolus (C) Lateral malleolus (D) Lateral tibial condyle (Cornuelle & Gronefeld, pp 193-195) correct answer(B) Medial malleolus The four major arteries supplying the brain include the 1. brachiocephalic artery. 2. common carotid arteries. 3. vertebral arteries. (A) 1 and 2 only (B) 1 and 3 only (C) 2 and 3 only (D) 1, 2, and 3 correct answer(C) 2 and 3 only What process is best seen using a perpendicular CR with the elbow in acute flexion and with the posterior aspect of the humerus adjacent to the image recorder? (A) Coracoid (B) Coronoid (C) Olecranon (D) Glenoid correct answer(C) Olecranon What are the positions most commonly employed for a radiographic examination of the sternum? 1. Lateral 2. RAO 3. LAO (A) 1 and 2 only (B) 1 and 3 only