Head, Neck & Face

Question 1

Origin and Insertion of SCM

Answer 1

Origin: top of manubrium; lateral 1/3 of clavicle
Insertion: mastoid process; lateral portion of superior nuchal line

Question 2

Actions of SCM

Answer 2

Unilaterally :laterally flex the head and neck to same side; rotate head and neck to opposite side
Bilaterally: flex the neck

Question 3

Origin and Insertion of Anterior Scalene

Answer 3

Origin: TVP of 3rd through 6th cervical vertebrae
Insertion: first rib

Question 4

Origin and Insertion of Middle Scalene

Answer 4

Origin: TVP of 2nd through 7th cervical vertebrae
Insertion: first rib

Question 5

Origin and Insertion of Posterior Scalene

Answer 5

Origin: TVP of 6th and 7th cervical vertebrae
Insertion: second rib

Question 6

Actions of all the Scalenes plus Anterior Scalenes other Action

Answer 6

Unilaterally: laterally flex the head and neck to same side; rotate the head and neck to opposite side
Bilaterally: elevate the ribs during inhalation
(Anterior Scalene: flex the head and neck)