Anatomy The following is true about scalenus anterior muscle – A It is attached to the tubercle of second rib B It is anterior to the transverse cervical artery C It is pierced by the phrenic nerve D It separates the subclavian vein from the subclavian artery 💡 Explanation The following is true about scalenus anterior muscle - ✓ Correct Answer: D. It separates the subclavian vein from the subclavian artery