THE HEAD - Box

Blood will flow retrogradely into the artery from the ext carotid artery on the other side through communications between its branches. When ext carotid or subclavian arteries are ligated – desc br of occipital a = main collateral circln. Carotid triangle – impt surgical approach to carotid syst of a, the IJV, CN X and XII, and cerv symp trunk. ................
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