SCALENES

• Origin

C2-C7 Vertebrae

• Insertion

First and Second Ribs

• Agonist(s)

Sternocleidomastoid

Levator Scapulae

• Antagonist(s)

- Trapezius

- Rhomboids

- Serratus anterior

- Pectoralis major

• Function

Elevation of Ribs during Inspiration and Flexion of Neck