Nerve and Action

Question 1

Lavator Labii Superioris

Answer 1

N: Facial n.
A: Raise the upper lip

Question 2

Buccinator

Answer 2

N: Facial n.
A: Retract commissure of the mouth and flatten the checks

Question 3

Masseter

Answer 3

N: Mandibular division of CN V (Trigeminal)
A: Closes the mouth

Question 4

Occibitomandibularis

Answer 4

N: Facial n.
A: Open the mouth

Question 5

Cricoarytenoideus Dorsalis

Answer 5

N: Reccurent Laryngeal n.
A: Open the glottis

Question 6

Cricoarytenoideus Lateralis

Answer 6

N: Reccurent Laryngeal n.
A: Close the glottis

Question 7

Supraspinatus

Answer 7

N: Suprascapular n.
A: Extend the shoulder, cranial shoulder stabilizer

Question 8

Infraspinatus

Answer 8

N: Suprascapular n.
A: Abduct the arm

Question 9

Deltoideus

Answer 9

N: Axillary n.
A: Flex shoulder and Abduct the arm

Question 10

Subscapularis

Answer 10

N: Subscapular and axillary n.
A: Adduct the humerus, medial shoulder stabilizer

Question 11

Biceps Brachii

Answer 11

N: Musculocutaneous n.
A: Flex the elbow, extend the shoulder and carpus

Question 12

Triceps Brachii (all heads)

Answer 12

N: Radial n.
A: Extend the elbow; flex the shoulder (long head only)

Question 13

Extensor Carpi Radialis

Answer 13

N: Radial n.
A: Extend carpus and flex the elbow

Question 14

Ulnaris Lateralis

Answer 14

N: radial n.
A: Flex carpus and extend the elbow

Question 15

Common Digital Extensor

Answer 15

N: Radial n.
A: Extend the digit and carpus, flex the elbow

Question 16

Flexor Carpi Radialis

Answer 16

N: Median n
A: Flex carpus and extend the elbow

Question 17

Superficial Digital Flexor

Answer 17

N: Ulnar n.
A: Flex the digit and carpus, and extend the elbow

Question 18

Deep Digital Flexor

Answer 18

N: Median and Ulnar n.
A: Flex the digit and carpus, and extend the elbow

Question 19

Interosseus

Answer 19

N: Palmar MC n.
A: Support the Fetlock