Exposure of left subclavian artery by supraclavicular approach does not require cutting of :
a) Sternocleidomastoid
b) Scalenus anterior
c) Scalenus medius
d) Omohyoid
Correct answer : c) Scalenus medius
Scalenus medius is located posterior to the subclavian artery. Hence there is no need to cut this to expose the subclavian artery.