Nerves

Question 1

What nerves make up the brachial plexus + their nerve roots?

Answer 1

Musculocutaneous C5-C7
Axillary C5-C6
Radial C5-T1
Median C5-T1
Ulnar C8-T1

Question 2

What makes up the M of the brachial plexus?

Answer 2

Musculocutaneous
Median
Ulnar

Question 3

nerve roots of musculocutaneous nerve

Answer 3

C5-C7

Question 4

nerve roots of axillary nerve

Answer 4

C5-C6

Question 5

nerve roots of median nerve

Answer 5

C5-T1

Question 6

nerve roots of radial nerve

Answer 6

C5-T1

Question 7

nerve roots of ulnar nerve

Answer 7

C8-T1

Question 8

Where is the motor supply of the musculocutaneous nerve?

Answer 8

Anterior arm:
Biceps brachii
Brachialis
Coracobrachialis

Question 9

Where is the motor supply of the axillary nerve?

Answer 9

Deltoid
Teres minor

Question 10

Where is the motor supply of the median nerve?

Answer 10

Anterior forearm:
Pronator teres
Flexor carpi radialis
Palmaris longus

Thenar muscles:
Oppenens pollicis
ABductor pollicis brevis
Flexor pollicis brevis

Question 11

Where is the motor supply of the radial nerve?

Answer 11

Posterior arm:
Triceps brachii

Posterior forearm:
Brachioradialis
Extensor carpi radialis longus + brevis
Extensor carpi ulnaris
Extensor digti minimi
Extensor digitorum
Anconeus

Supinator
Extensor indicis
Extensor pollicis longus + brevis
ABductor pollicis longus

Question 12

Where is the motor supply of the ulnar nerve?

Answer 12

Flexor carpi ulnaris
Ulnar half of flexor digitorum profundus

Interossi
Hypothenar eminence
Bipennate lumbricals

Question 13

Where is the sensory supply of the musculocutaneous nerve?

Answer 13

Becomes lateral cutaneous nerve of forearm
Lateral forearm

Question 14

Roots of long thoracic nerve

Answer 14

C5-C7

Question 15

What does the long thoracic nerve supply?

Answer 15

Serratus anterior

Question 16

Roots of lateral pectoral nerve

Answer 16

C5-C7

Question 17

Roots of median pectoral nerve

Answer 17

C8-T1

Question 18

Where is the sensory supply of the axillary nerve?

Answer 18

Regimental badge area

Question 19

Where is the sensory supply of the median nerve?

Answer 19

Radial 3 1/2 digits of palmar hand
Tips of those fingers on dorsum

Question 20

Where is the sensory supply of the radial nerve?

Answer 20

Posterior arm + forearm
Radial 3 1/2 digits of dorsum of hand NOT finger tips

Question 21

Where is the sensory supply of the ulnar nerve?

Answer 21

Ulnar 1 1/2 digits of hand plantar + dorsum

Question 22

What does damage to the upper brachial plexus cause?
Presentation

Answer 22

Erb’s palsy
Waiters tip position - C5+C6 affected - oppose actions

Question 23

What does damage to the lower brachial plexus cause?
Presentation

Answer 23

Klumpke’s palsy
Claw hand - C8 + T1 affected - opposite actions

Question 24

Nerves of the lumbosacral plexus + roots

Answer 24

I Get Leftovers On Friday
Iliolinguinal L1
Genitofemroal L1-L2
Lateral femoral cutaneous L2-L3
Obturator L2-L4
Femoral L2-L4

Question 25

Where is the sensory supply of the Obturator nerve?

Answer 25

Skin over medial thigh

Question 26

Where is the sensory supply of the iliolinguinal nerve?

Answer 26

Skin over genitaial + upper medial thigh

Question 27

Where is the sensory supply of the lateral femoral cutaneous nerve?

Answer 27

Anterolateral thigh to knee

Question 28

Where is the sensory supply of the femoral nerve?

Answer 28

**anterior femoral cutaneous branch** - anterior thigh **Saphenous branch** - medial leg

Question 29

Where is the motor supply of the Obturator nerve?

Answer 29

Medial thigh: Adductor brevis Adductor longus Adductor Magnus Gracilis Obturator externus

Question 30

Where is the motor supply of the femoral nerve?

Answer 30

Anterior thigh: Vastus lateralis Vastus intermedialis Vastus medialis Iliacus Rectus femoris Sartorius

Question 31

Nerve roots of ilioliguinal nerve

Answer 31

L1

Question 32

Nerve roots of Genitofemoral nerve

Answer 32

L1-L2

Question 33

Nerve roots of lateral cutaneous nerve

Answer 33

L2-L3

Question 34

Nerve roots of obturator nerve

Answer 34

L2-L4

Question 35

Nerve roots of femoral nerve

Answer 35

L2-L4

Question 36

What is the lumbar plexus formed from?

Answer 36

Anterior rami L1-4 spinal nerves

Question 37

Nerves of the sacral plexus + roots

Answer 37

**Salmon Is So Perfectly Pink** **S**uperior gluteal L4-S1 **I**nferior gluteal L5-S2 **S**ciatic L4-S3 **P**osteior femroal cutaneous S1-S3 **P**udendal S2-S4

Question 38

Nerve roots of superior gluteal nerve

Answer 38

L4-S1

Question 39

Nerve roots of inferior gluteal nerve

Answer 39

L5-S2

Question 40

Nerve roots of sciatic nerve

Answer 40

L4-S3

Question 41

Nerve roots of posterior femoral cutaneous nerve

Answer 41

S1-S3

Question 42

Where is the motor supply of the superior gluteal nerve nerve?

Answer 42

Abductors: Gluteus medius Gluteal minimus Tensor fascia lata

Question 43

Where is the motor supply of the inferior gluteal nerve?

Answer 43

Gluteus maximus

Question 44

Where is the sensory supply of the posterior femoral cutaneous nerve?

Answer 44

Posterior thigh + leg

Question 45

Where is the sensory supply of the super and inferior gluteal nerve?

Answer 45

No sensory branches

Question 46

What does the sciatic nerve divide into + where?

Answer 46

Tibial nerve Common peroneal nerve At superior popliteal fossa

Question 47

Where is the motor supply of the tibial nerve?

Answer 47

Hamstring muscles: - semitendinosus - semimembranosus - biceps femoris (long head) - ischia part of ADuctor magnus

Question 48

Where is the motor supply of the common peroneal nerve?

Answer 48

Biceps femoris (short head)

Question 49

What is the sacral plexus formed by?

Answer 49

Anterior rami S1-S5 Receives contribution from L4+L5 via lumbosacral trunk