Neck, Back, and Upper Extremity Innervation Flashcards
Includes muscle innervation, cutaneous innervation, plexi, and spinal roots
trapezius
CN11
latissimus dorsi
thoracodorsal nerve (a branch of the posterior cord of the brachial plexus)
rhomboids
dorsal scapular nerve
levator scapulae
dorsal scapular nerve and the anterior rami of C3 and C4
splenius
posterior rami of C3 and C4
erector spinae
dorsal rami
type of nerves in the dorsal roots?
sensory
(this is pre-spinal nerve; rami contain both)
type of nerves in the dorsal ramps of the spinal nerves?
both motor and sensory
what is in dorsal root ganglia
cell bodies of neurons
4 cutaneous branches of the cervical plexus
.
which ventral rami form cervical plexus
C1-C4
what is between middle and anterior scalene
trunks of the brachial plexus
what muscles are innervated by CN 11?
sternocleidomastoid and trapezius
phrenic nerve: target, ventral rami that form it, and location (on which muscle?)
Diaphragm
C3-C5
Anterior scalene
biceps brachii
musculocutaneous nerve (the most lateral of the terminal branches of the brachial plexus)
corachobrachialis
musculocutaneous nerve (the most lateral of the terminal branches of the brachial plexus)
what does long thoracic nerve supply, and which surgical procedure can injure it?
serratous anterior
mastectomy
where do we see trunks of brachial plexus?
posterior triangle of neck, between the anterior and middle scalenes
where do we see cords of the brachial plexus?
anterior, medial, and posterior
high in axilla, before “M”
where do we see terminal branches of the brachial plexus?
the “M” of the axilla
lateral to medial: the terminal branches of the brachial plexus
musculocutaneous
axillary (sort of behind the M)
median
radial (sort of behind the M)
ulnar
muscles innervated by musculocutaneous nerve
anterior brachium (biceps brachii, brachialis, corachobrachialis)
cutaneous regions innervated by musculocutaneous nerve
anterior brachium
muscles innervated by axillary nerve
deltoid, teres minor
cutaneous regions innervated by axillary nerve
skin over shoulder
muscles innervated by median nerve
.
cutaneous regions innervated by median nerve
digits 2 and 3 (carpal tunnel) …
muscles innervated by ulnar nerve
lateral forearm?
cutaneous regions innervated by ulnar nerve
.
muscles innervated by radial nerve
anterior forearm (flexor compartment)
cutaneous regions innervated by radial nerve
anterior forearm, digits 1 and 2?
long thoracic nerve
anterior serratous
thoracodorsal
latissimus dorsi …
suprascapular
scapular …
muscles of the face (innervation)
CN 7
branches of CN 7
supraorbital
infraorbital
mental
lesser occipital
greater occipital ?
supraorbital, infraorbital, and mental nerves are branches of…
trigeminal
pec major innervation
median and lateral pectoral nerves
deltoid innervation
axillary nerve
supraspinatous innervation
suprascapular nerve
C5 and C6
which ventral rami form axillary nerve
C5 and C6
biceps brachii innervation
musculocutaneous
brachialis innervation
musculocutaneous
radial
coracobrachialis innervation
musculocutaneous
musculocutaneous nerve ventral rami
C5, C6, C7
radial nerve ventral rami
C5 through T1
cutaneous innervation medial aspect of upper arm
medial brachial cutaneous nerve
cutaneous innervation upper shoulder and neck
suprascapular
cutaneous innervation shoulder
axillary
cutaneous innervation posterior upper arm
radial (same as posterior forearm)
cutaneous innervation posterior forearm
radial (same as posterior brachium)
cutaneous innervation anterior upper arm
medial antebrachial cutaneous (same as anterior forearm)
cutaneous innervation anterior forearm
medial antebrachial cutaneous (same as anterior upper arm)
cutaneous innervation lateral forearm
lateral antebrachial cutaneous nerve
which is a continuation of musculocutaneous nerve
location of ulnar nerve cubital fossa
b/w olecranon and medial epicondyle
flexor carpi radialis innervation
median nerve
flexor carpi ulnaris innervation
ulnar nerve
pronator teres innervation
median nerve
flexor digitorum superficialis innervation
median nerve
flexor digitorum profundus innervation
median AND ulnar nerves
flexor pollicis longus innervation
median nerve
pronator quadratus innervation
median nerve
median nerve innervates…
muscles of anterior forearm:
pronator teres
flexor carpi radialis
palmaris longus
flexor carpi ulnaris
flexor digitorum superficialis
flexor digitorum profundus
flexor pollicis longus
pronator quadratus

