Brachial Plexus Flashcards
Name the highlighted Nerve
dorsal scapular nerve
Name the highlighted Nerve
long thoracic n.
Name the highlighted Nerve
N. to subclavius
Name the highlighted Nerve
Suprascapular n.
Name the highlighted Nerve
lateral pectoral n.
Name the highlighted Nerve
upper subscapular n.
Name the highlighted Nerve
thoracodorsal n.
Name the highlighted Nerve
lower subscapular nerve
Name the highlighted Nerve
medial pectoral nerve
Name the highlighted Nerve
medial brachial cutaneous n.
Name the highlighted Nerve
medial antebrachial cutaneous nerve
Name the highlighted nerves from top to bottom
Musculocutaneous n.
Axillary n.
Median n.
Radial n.
Ulnar n.
“MAMRU”
Name these sections of the brachial plexus
ventral primary rami, C5-T1
Name these sections of the brachial plexus
Superior, middle, and inferior trunks
(learned upper, middle, and lower in anatomy)
Name these sections of the brachial plexus
Anterior and posterior divisions of the trunks
Name these sections of the brachial plexus
what spinal segments make up the subclavius nerve?
C5,C6
What does nerve to subclavius innervate?
subclavius muscle
which spinal segments make up the dorsal scapular nerve?
C5
what does dorsal scapular nerve innervate?
rhomboid muscles
levator scapulae muscle
what spinal segments make up long thoracic nerve?
C5-C7
what does long thoracic nerve innervate?
serratus anterior muscle
what spinal segments make up the supra-scapular nerve?
C5, C6
what does the supra-scapular n. innervate?
supraspinatus and infraspinatus muscles
what spinal segments make up the medial pectoralis nerve?
C8-T1
what does medial pectoralis nerve innervate?
pec major and pec minor
which spinal segments make up the lateral pectoralis nerve?
C5-C7
what does lateral pectoralis nerve innervate?
pec major
which spinal segments make up thoracodorsal nerve?
C6-C8
what does thoracodorsal n. innervate?
latissimus dorsi m.
which spinal segments make up the axillary nerve?
C5 and C6
what structure does the axillary nerve follow?
posterior circumflex humeral artery
what does axillary nerve innervate?
deltoid and teres minor muscles
skin of the arm/lateral shoulder
which is the longest branch of the brachial plexus?
radial nerve
which spinal segments make up the radial nerve?
C5-C8, T1 is inconsistent
what does radial nerve innervate?
extensor muscles of the forearm: extensor carpi radialis, extensor carpi ulnaris
extensor muscles of the Arm: triceps brachii
supinator, anconeus, brachioradialis m.
digital extensors
abductor pollicis longus
skin over posterolateral surface fo the arm, forearm, and hand
which spinal segments make up the musculocutaneous nerve?
C5 - C7
what does musculocutaneous n. innervate?
flexor muscles of the arm: biceps brachii, brachialis, coracobrachialis
skin over the lateral surface fo the forearm (lateral antebrachialcutaneous)
which spinal segments make up median nerve?
C6 - T1, but inconsistent contribution from C5
what does median nerve innevate?
flexor muscles of the forearm: flexor carpi radialis, palmaris longus, pronator quadratus, pronator teres muscles
digital flexors (through palmar interosseous nerve)
skin over anterolteral surface of the hand
which spinal segments make up the ulnar nerve?
C8, T1
what does ulnar nerve innervate?
flexor carpi ulnaris muscles
adductor pollicis
hypothenar muscles
small digit muscles
skin over medial surface of the hand
Name the sensory innervation of this region
axillary nerve
(sup lateral brachial cutaneous n.)
Name the sensory innervation of this region
supraclavicular nerves
(from cervical plexus C3-C4)
Name the sensory innervation of this region
Radial Nerve
Name the sensory innervation of this region
medial brachial cutaneous nerve
intercostobrachial nerve
Name the sensory innervation of this region
medial antebrachial cutaneous nerve
Name the sensory innervation of this region
lateral antebrachial cutaneous nerve
(terminal part of musculocutaneous nerve)
Name the sensory innervation of this region
ulnar nerve
Name the sensory innervation of this region
median nerve
Name the sensory innervation of this region
(Yeah, yeah I know I already had a card on this)
radial nerve
Which muscle does the musculocutaneous nerve first peirce?
coracobrachialis muscle