Anterior/Posterior muscles of the neck

Question 1

Splenius Capitus M

Answer 1

Extends nek (bilaterally) 
flexes neck

posterior rami C3-5

Question 2

Anterior Scalene M

Answer 2

Flexes neck, laterally flexes neck
elevates first rib

anterior rami C4-5

Question 3

middle scalene

Answer 3

flexes neck, laterally flexes neck
elevates first rib

anterior rami C6-8

Question 4

Posterior scalene

Answer 4

laterally flex the neck
elevates the second rib

anterior rami C6-8