Superficial Muscles of the Neck (MT)

Question 1

Sternocleidomastoid origin

Answer 1

Manubrium of the Sternum and Medial 1/3 of the clavicle

Question 2

Sternocleidomastoid Insertion

Answer 2

Lateral aspect of Mastoid process of the temporal bone

Question 3

Sternocleidomastoid innervation

Answer 3

CN XI

Question 4

Sternocleidomastoid action

Answer 4

1. Rotates the head opposite the contracted side
2. Laterally Flexes the neck to the contracted side
3. Bilaterally flexes the neck

Question 5

Trapezius origin

Answer 5

• External Occipital Protuberence of the Skull

- C1-T12 Spinous Processes

Question 6

Trapezius insertion

Answer 6

• Clavicle (upper fibers)
• Acromion (middle fibers)
• Scapular Spine (lower fibers)

Question 7

Trapezius Innervation

Answer 7

Subtrapezial Nerve Plexus

- (CN XI and C3 and C4 Ventral rami)

Question 8

Trapezius action

Answer 8

Move the shoulders

Question 9

Digastric Anterior Belly Origin

Answer 9

Digastric Fossa of Mandible

Question 10

Digastric Anterior Belly Insertion

Answer 10

Digastric Tendon to the Hyoid Bone

Question 11

Digastric Anterior Belly Innervation

Answer 11

Mylohyoid n.

Question 12

Digastric Anterior Belly action

Answer 12

Lowers Mandilbe or Raises Hyoid

Question 13

Digastric Posterior Belly origin

Answer 13

Mastoid Process

Question 14

Digastric Posterior Belly insertion

Answer 14

Digastric Tendon to the Hyoid Bone

Question 15

Digastric Posterior Belly innervation

Answer 15

CN VII

Question 16

Digastric Posterior Belly action

Answer 16

Elevates and Retracts Hyoid