Landmarks for nerves and blood vessels

Question 1

Points of Attachment and Action of Anterior Scalene muscle

Answer 1

C3 to C6 vertebrae to the scalene tubercle at the 1st rib

Elevates the upper ribs, flexion and ipsilateral inclination of the cervical spine

Question 2

Why is the anterior scalene muscle a landmark

Answer 2

Artery runs in front of it, vein behind it

Also between the two scalene muscles the roots of the brachial plexus both emerge

Question 3

Points of Attachment and Action of Middle scalene

Answer 3

C2 to C7 to the upper surface of the 1st rib behind the subclavian artery