Head/Neck/Face

Question 1

What are the actions of the SCM?

Answer 1

Unilat: lat flexion of neck to the same side
Rotate head to opposite side
Bilat: Neck flexion
Assist to elevate ribs during inhalation

Question 2

Where does the SCM originate?

Answer 2

Sternal Head: Top of manubrium
Clavicular Head: Medial 1/3 of clavicle

Question 3

Where does the SCM insert?

Answer 3

• Mastoid process of temporal bone
• Lat portion of superior nuchal line of occiput

Question 4

Actions of ALL scalenes

Answer 4

• Unilat: With ribs fixed, laterally flex the head and neck to same side
• Rotate head and neck to opposite side
• Bilat: Elevate ribs during inhalation
  Flex the head and neck

Question 5

Where does the Anterior Scalene originate?

Answer 5

Transverse processes of C3-C6

Question 6

Where does the Anterior scalenes insert?

Answer 6

First rib

Question 7

Where do the Middle Scalenes originate?

Answer 7

Transverse processes of C2-C7

Question 8

Where do middle scalenes insert?

Answer 8

First rib

Question 9

Where do the posterior scalenes originate

Answer 9

Transverse process of C6-C7

Question 10

Where do the posterior scalenes insert?

Answer 10

Second Rib

Question 11

What are the actions of the Masseter?

Answer 11

• Elevate the mandible
• May assist to protract the mandible

Question 12

Masseter origin

Answer 12

Zygomatic arch

Question 13

Masseter insertion

Answer 13

Angle and ramus of mandible

Question 14

Temporalis actions

Answer 14

• Elevate mandible
• Retract mandible

Question 15

Temporalis origin

Answer 15

Temporalis fossa and fascia

Question 16

Temporalis insertion

Answer 16

• Coronoid process
• Anterior edge of ramus of mandible