peripheral anatomy

Question 1

What are the 3 nerve branches of the trigeminal nerve

Answer 1

ophthalmic, maxillary, mandibular

Question 2

what does the glossopharyngeal nerve innervate?

Answer 2

oropharynx, soft palate, posterior portion of the tongue, pharyngeal surface of epiglottis

Question 3

which nerve, when blocked, blocks the gag reflex and posterior pharynx (helpful for nasal intubation)

Answer 3

glossopharyngeal

Question 4

What 4 things does the SLN innervate?

Answer 4

base of tongue, posterior side of epiglottis, aryepiglottic fold, arytenoids.

Question 5

The SLN can be blocked by ___ ____

Answer 5

mucosal saturation

Question 6

What does the RLN innervate?

Answer 6

vocal folds and trachea

Question 7

what does the cervical plexus innervate?

Answer 7

muscles, joints and skin in the anterior neck

Question 8

the cervical plexus innervates ventral rami, C__-__

Answer 8

C1-C4

Question 9

The brachial plexus is divided into what 5 things? (hint:randy travis)

Answer 9

ventral rami(roots), trunks, divisions, cords, branches.

randy travis drinks cold beer

Question 10

Brachial Plexus: how many of each?

roots, trunks, divisions, cords, branches

Answer 10

5, 3, 6, 3, 4

Question 11

Brachial plexus: where are the roots, trunks, and divisions found anatomically?

Answer 11

posterior triangle of the neck, supraclavicular

Question 12

Brachial plexus: where are the cords and branches found anatomically?

Answer 12

axilla, infraclavicular

Question 13

brachial plexus: what spinal levels do the 5 rami (roots) involve?

Answer 13

C5-T1

Question 14

brachial plexus: the superior trunk is found at C__, the middle is ___, and inferior is ___

Answer 14

superior C5-C6
middle C7
inferior C8-T1

Question 15

The trunks of the brachial plexus are enveloped in ____ ____

Answer 15

fascial sheath

Question 16

The interscalene space emerges between the ___ and ___ scalene muscle

Answer 16

anterior and middle

Question 17

brachial plexus: injection into the nerve sheath commonly produces what?

Answer 17

complete block of upper extremity

Question 18

brachial plexus: Of the 6 divisions, 3 are ___ and 3 are ____

Answer 18

ventral (anterior) and dorsal (posterior)

Question 19

Brachial plexus: each cord divides into __ branches and become ____

Answer 19

2, peripheral nerves

Question 20

brachial plexus: the lateral cord becomes which two nerves?

Answer 20

musculocutaneous and lateral root of median nerve

Question 21

brachial plexus: the medial cord because which two nerves?

Answer 21

medial root of medial nerve and ulnar nerve

Question 22

brachial plexus: the posterior cord becomes which two nerves?

Answer 22

axillary and radial

Question 23

what is the motor response to radial nerve stimulation

Answer 23

wrist extension, metacaropo-phalangeal extension, thumb abduction

Question 24

what is the motor response to musculocutaneous nerve stimulation

Answer 24

biceps flexion

Question 25

which nerve passes into the forearm through the carpel tunnel?

Answer 25

median nerve

Question 26

what is the motor response to median nerve stimulation

Answer 26

wrist flexion, fingers' flexion, thumb opposition

Question 27

what is the motor response to ulnar nerve stimulation

Answer 27

ulnar deviation of the wrist, metacarpo-phalangeal flexion, thumb adduction

Question 28

the lumbosacral plexus is formed by ventral rami of what spinal levels?

Answer 28

L1-S5 | may include T12

Question 29

iliohypogastric nerve is formed from ___

Answer 29

T12-L1

Question 30

ilioinguinal nerve is formed from ___

Answer 30

T12-L1

Question 31

genitofemoral nerve is formed from ___

Answer 31

L1-L2

Question 32

pudendal nerve is formed from anterior divison of ___

Answer 32

S2-S4

Question 33

lateral femoral curaneous nerve is from posterior divison of _____

Answer 33

L2-L3

Question 34

posterior femoral cutaneous nerve is formed from anterior and posterior ____

Answer 34

S1-S3

Question 35

obturator nerve is from anterior division ___

Answer 35

L2-L4

Question 36

femoral nerve is from posterior division ___

Answer 36

L2-L4

Question 37

sciatic nerve is formed by the junction of???

Answer 37

tibial nerve (anterior) L4-S3 (largest) and common peroneal nerve (posterior) L4-S2

Question 38

what are the 5 nerves that innervate the foot?

Answer 38

common peroneal, saphenous, superficial peroneal, sural, deep peroneal

Question 39

what is the motor response to superficial peroneal nerve stimulation?

Answer 39

abduction of foot, eversion of foot

Question 40

what is the motor response to deep peroneal nerve stimulation ?

Answer 40

toes toward calf (dorsiflexion?)

Question 41

what is the response to tibial nerve stimulation

Answer 41

plantar flexion of foot and toes | inversion of foot