Trunk and Face Muscles and Actions

Question 1

Frontalls

Answer 1

Raises Eyebrows

Question 2

Orbicularis oculi

Answer 2

Closes eyes; blinking and squinting

Question 3

Zygomaticus

Answer 3

Smiling

Question 4

Orbicularis oris

Answer 4

Closes mouth; purses and protrudes lips (kissing muscles)

Question 5

Masseter

Answer 5

Closes jaw and elevates mandible (prime mover)

Question 6

Temporalis

Answer 6

Closes jaw and elevates mandible (synergist)

Question 7

Buccinator

Answer 7

Compresses cheek

Question 8

Platysma

Answer 8

Depresses mandible;pulls lower lip back and down (antagonist to masseter and temporalis)

Question 9

Sternocleidomastoid (SCM)

Answer 9

Flexion of neck, rotates head

Question 10

Occipitalus

Answer 10

Wiggles ears

Question 11

Depressor labii

Answer 11

Frown

Question 12

Nasalis

Answer 12

Flaring nostrils

Question 13

Levator labii superibris aleque nasi (L.L.S.A.N.)

Answer 13

Elvis lip snarl

Question 14

Pectoralis major

Answer 14

Arm flexion; adducts

Question 15

Deltoid

Answer 15

Arm abduction; aids in flexion, extension

Question 16

Recuts abdominis

Answer 16

Flexes vertebral column (spine)

Question 17

External oblique

Answer 17

Rotates and laterally flexes the trunk

Question 18

Internal oblique

Answer 18

Rotate and laterally flexes the trunk

Question 19

Transversus abdominis

Answer 19

Compresses abdominal contents

Question 20

Trapezius

Answer 20

Extends and hyperextends neck; retracts scapula

Question 21

Latissimus dorsi

Answer 21

Arm extension; adducts

Question 22

Erector spinae

Answer 22

Extends the vertebral column; hyperextends spine