Nerves Flashcards
What nerves make up the brachial plexus + their nerve roots?
Musculocutaneous C5-C7
Axillary C5-C6
Radial C5-T1
Median C5-T1
Ulnar C8-T1
What makes up the M of the brachial plexus?
Musculocutaneous
Median
Ulnar
nerve roots of musculocutaneous nerve
C5-C7
nerve roots of axillary nerve
C5-C6
nerve roots of median nerve
C5-T1
nerve roots of radial nerve
C5-T1
nerve roots of ulnar nerve
C8-T1
Where is the motor supply of the musculocutaneous nerve?
Anterior arm:
Biceps brachii
Brachialis
Coracobrachialis
Where is the motor supply of the axillary nerve?
Deltoid
Teres minor
Where is the motor supply of the median nerve?
Anterior forearm:
Pronator teres
Flexor carpi radialis
Palmaris longus
Thenar muscles:
Oppenens pollicis
ABductor pollicis brevis
Flexor pollicis brevis
Where is the motor supply of the radial nerve?
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
Where is the motor supply of the ulnar nerve?
Flexor carpi ulnaris
Ulnar half of flexor digitorum profundus
Interossi
Hypothenar eminence
Bipennate lumbricals
Where is the sensory supply of the musculocutaneous nerve?
Becomes lateral cutaneous nerve of forearm
Lateral forearm
Roots of long thoracic nerve
C5-C7
What does the long thoracic nerve supply?
Serratus anterior
Roots of lateral pectoral nerve
C5-C7
Roots of median pectoral nerve
C8-T1
Where is the sensory supply of the axillary nerve?
Regimental badge area
Where is the sensory supply of the median nerve?
Radial 3 1/2 digits of palmar hand
Tips of those fingers on dorsum
Where is the sensory supply of the radial nerve?
Posterior arm + forearm
Radial 3 1/2 digits of dorsum of hand NOT finger tips
Where is the sensory supply of the ulnar nerve?
Ulnar 1 1/2 digits of hand plantar + dorsum
What does damage to the upper brachial plexus cause?
Presentation
Erb’s palsy
Waiters tip position - C5+C6 affected - oppose actions
What does damage to the lower brachial plexus cause?
Presentation
Klumpke’s palsy
Claw hand - C8 + T1 affected - opposite actions
Nerves of the lumbosacral plexus + roots
I Get Leftovers On Friday
Iliolinguinal L1
Genitofemroal L1-L2
Lateral femoral cutaneous L2-L3
Obturator L2-L4
Femoral L2-L4
Where is the sensory supply of the Obturator nerve?
Skin over medial thigh
Where is the sensory supply of the iliolinguinal nerve?
Skin over genitaial + upper medial thigh
Where is the sensory supply of the lateral femoral cutaneous nerve?
Anterolateral thigh to knee
Where is the sensory supply of the femoral nerve?
anterior femoral cutaneous branch - anterior thigh
Saphenous branch - medial leg
Where is the motor supply of the Obturator nerve?
Medial thigh:
Adductor brevis
Adductor longus
Adductor Magnus
Gracilis
Obturator externus
Where is the motor supply of the femoral nerve?
Anterior thigh:
Vastus lateralis
Vastus intermedialis
Vastus medialis
Iliacus
Rectus femoris
Sartorius
Nerve roots of ilioliguinal nerve
L1
Nerve roots of Genitofemoral nerve
L1-L2
Nerve roots of lateral cutaneous nerve
L2-L3
Nerve roots of obturator nerve
L2-L4
Nerve roots of femoral nerve
L2-L4
What is the lumbar plexus formed from?
Anterior rami L1-4 spinal nerves
Nerves of the sacral plexus + roots
Salmon Is So Perfectly Pink
Superior gluteal L4-S1
Inferior gluteal L5-S2
Sciatic L4-S3
Posteior femroal cutaneous S1-S3
Pudendal S2-S4
Nerve roots of superior gluteal nerve
L4-S1
Nerve roots of inferior gluteal nerve
L5-S2
Nerve roots of sciatic nerve
L4-S3
Nerve roots of posterior femoral cutaneous nerve
S1-S3
Where is the motor supply of the superior gluteal nerve nerve?
Abductors:
Gluteus medius
Gluteal minimus
Tensor fascia lata
Where is the motor supply of the inferior gluteal nerve?
Gluteus maximus
Where is the sensory supply of the posterior femoral cutaneous nerve?
Posterior thigh + leg
Where is the sensory supply of the super and inferior gluteal nerve?
No sensory branches
What does the sciatic nerve divide into + where?
Tibial nerve
Common peroneal nerve
At superior popliteal fossa
Where is the motor supply of the tibial nerve?
Hamstring muscles:
- semitendinosus
- semimembranosus
- biceps femoris (long head)
- ischia part of ADuctor magnus
Where is the motor supply of the common peroneal nerve?
Biceps femoris (short head)
What is the sacral plexus formed by?
Anterior rami S1-S5
Receives contribution from L4+L5 via lumbosacral trunk
