Exam #4 Chapter 12 part 2 (peripheral nerves)

Question 1

what spinal nerves does the cervical plexus originate from?

Answer 1

C1-C5

Question 2

what spinal nerves the does the brachial plexus originate from?

Answer 2

C5-T1

Question 3

what spinal nerves does the lumbar plexus originate from?

Answer 3

L1-L4

Question 4

what spinal nerves does the sacral plexus originate from?

Answer 4

L4-S4

Question 5

what plexus does the axillary nerve originate from?

Answer 5

the brachial plexus

Question 6

what muscles does the axillary nerve innervate?

Answer 6

the teres minor and deltoid

Question 7

what skin part of the skin does the axillary nerve innervate”?

Answer 7

inferior lateral shoulder (sensory)

Question 8

what plexus does the radial nerve originate from?

Answer 8

the brachial plexus

Question 9

what muscles does the radial nerve innervate? 9 (TBBEESEEE)

Answer 9

1) triceps brachii
2) brachialis (sensory only)
3) brachioradialis
4) extensor carpi radialis longus
5) exenternsor carpi radialis brevis
6) supinator
7) extensor digitorum
8) extensor digiti minimi
9) extensor carpi ulnaris

Question 10

what part of the skin does the radial nerve innervate?

Answer 10

posterior surface of arm and forearm and lateral two-thirds of dorsum of hand (sensory)

Question 11

what plexus does the musculocutaneous nerve originate from?

Answer 11

brachial plexus

Question 12

what muscles dose the musculocutaneous nerve innervate? (3) (BCB)

Answer 12

1) biceps brachii
2) coracobrachialis
3) brachialis

Question 13

what part of the skin does the musculocutaneous nerve innervate?

Answer 13

the lateral surface of the forearm (sensory)

Question 14

what plexus does the ulnar nerve originate from?

Answer 14

the brachial plexus

Question 15

what muscles does the ulnar nerve innervate? ()

Answer 15

adductor pollicis

Question 16

what part of the skin does the ulnar nerve innervate?

Answer 16

the medial third of hand, little finger and medial half of ring finger (sensory)

Question 17

what plexus does the median nerve originate from?

Answer 17

brachial plexus

Question 18

what muscles does the median nerve innervate? (4) (pfpf)

Answer 18

1) pronator teres
2) flexor carpi radialis
3) palmaris longus
4) flexor digitorum superficialis

Question 19

what part of the skin does the median nerve innervate?

Answer 19

lateral two thirds of palm of hand, thumb, index finger and middle fingers and lateral half of ring finger and dorsal tips of same fingers (sensory)

Question 20

what plexus does the obturator nerve originate from?

Answer 20

lumbosacral plexus

Question 21

what muscles does the obturator nerve innervate? (5) (OAAAG)

Answer 21

1) obturator externus
2) adductor magnus (adductor part)
3) adductor longus
4) adductor brevis
5) gracilis

Question 22

what part of the skin does the obturator nerve innervate?

Answer 22

superior medial side of thigh (sensory)

Question 23

what plexus does the femoral nerve originate from?

Answer 23

lumbosacral plexus

Question 24

what muscles does the femoral nerve innervate? (7) (PIPVVVR)

Answer 24

1) psoas major
2) iliacus
3) pectineus
4) vastus lateralis
5) vastus intermedius
6) vastus medialis
7) rectus femoris

Question 25

what part of the skin does the femoral nerve innervate/

Answer 25

anterior and lateral branches supply the anterior and lateral thigh. saphenous branch supplies the medial leg and foot

Question 26

what plexus does the tibial nerve originate from?

Answer 26

the lumbosacral plexus

Question 27

what muscles does the tibial nerve innervate? (10) (BSSAPGSTPF)

Answer 27

1) bicepts femoris (long head)
2) semitendinosus
3) semimembranosus
4) adductor magnus (hamstring part)
5) plantaris
6) gastrocnemius
7) soleus
8) tibialis posterior
9) popliteus
10) flexor digitorum longus

Question 28

what part of the skin does the tibial nerve innervate?

Answer 28

none

Question 29

what plexus does the medial and lateral plantar nerves originate from?

Answer 29

lumbosacral plexus (tibial nerve)

Question 30

what muscles does the medial and lateral plantar nerves innervate?

Answer 30

plantar muscles of the foot

Question 31

what part of the skin does the medial and lateral plantar nerves innervate?

Answer 31

sole of foot (sensory)

Question 32

what plexus does the sural nerve originate from?

Answer 32

lumbosacral plexus (tibial nerve)

Question 33

what muscles does the sural nerve innervate?

Answer 33

none

Question 34

what part of the skin does the sural nerve innervate?

Answer 34

lateral and posterior one-third of leg and lateral side of foot

Question 35

what plexus does the common fibular (peroneal) nerve originate from?

Answer 35

the lumbosacral plexus

Question 36

what muscles does the common fibular (peroneal) nerve innervate?

Answer 36

biceps femoris (short head)

Question 37

what part of the skin does the common fibular (peroneal) nerve innervate?

Answer 37

lateral surface of knee

Question 38

what plexus does the deep fibular (peroneal) nerve?

Answer 38

lumbosacral plexus (common fibular (peroneal) nerve)

Question 39

what muscles does the deep fibular (peroneal) nerve innervate? (5) (TFEEE)

Answer 39

1) tibialis anterior
2) fibularis tertius
3) extensor digitorum longus
4) extensor hallucis longus
5) extensor digitorum brevis

Question 40

what part of the skin does the deep fibular (peroneal) nerve innervate?

Answer 40

the great and second toes

Question 41

what plexus does the superficial fibular (Peroneal) nerve originate

Answer 41

the lumbosacral plexus (common fibular (peroneal) nerve)

Question 42

what muscles does the superficial fibular (peroneal) nerve innervate? (2) (FF)

Answer 42

1) fibularis longus

2) fibularis brevis

Question 43

what part of the skin does the superficial fibular (peroneal) nerve innervate?

Answer 43

dorsal anterior third of leg and dorsum of foot