T2- Brachial Plexus Flashcards
M. innervated from dorsal Scap
rhomboid major
Rhomboid minor
Levator scap
(C5) - Root
dorsal scap N origin
C5 - Root
M. innervated by the suprascapular N
Supraspinatus
Infraspinatus
GH JT
The suprascapular N innervates what JT
GH JT
Origin of the suprascapular N
C4,5,6
Truck
M. innervated by the subclavis N
Subclavious
Sternoclavicular JT
(C4,5,6- Trunk)
The SC JT is innervated by what N ?
subclavis N
C4,5,6- trunk
Lateral Pectoralis N origin
Lateral chord of C5,6,7
What M are innervated by the lateral pectoralis N
Pactoralis Major
Lat. Cord- C5,6,7
M. innervated by the Musculocutaneous N
M. of the anterior compartment:
Coracobrachialis
Bicep brachii
Brachialis
Skin on the lateral part of the forearm
2 N off the Superior trunk
Subclavis
Supraspinatus
N off the lateral cord
Lateral Pectoralis
N off the middle trunk
None
N off the inferior trunk
None
Nerves off the posterior cord
upper subscapular
thoracodorsal
lower subscapular
M innervated by the upper subscapular N
(superior) subscapularis M
C5- Post trunk
M innervated by the Lower subscapular N
(inf ) subscapularis N
Teres Major
(C6-Trunk)
Root of the upper subscapular N
C5 (posterior trunk)
Root of the lower subscapular N
C6 (posterior trunk)
M innervated by the thoracodorsal N
Latissimus
(C6,7,8) posterior trunk
What two branches come off of the posterior cord ?
Axillary ( C5-T1)
Radial (C5-T1)
M. innervated by the axillary N (C5-T1)
GH JT
teres minor
Deltoid
Skin of superior lateral arm
What jt does the axillary N innervate
GH JT
What two nerves innervate the GH JT
Axillary
suprascapular
M. innervated by the radial N
M of the posterior compartment: Triceps ( lat, long, medial) Brachioradialis anconeus Extensor carpi radialis longus Extenor carpi radialis brevis
Branches from the medial cord
medial pectoral
medial brachii cutaneous
Medial antebrachial cutaneous
What are the nerve roots of the medial cord
C8,T1
_____ cord off the anterior division of the inferior trunk
medial cord
_____ cord off the posterior division of the middle trunk
Posterior cord
_____ cord off the anterior division of the superior trunk
lateral cord
The medial cord will give off the _____ branch
Ulnar
Median N is derived from the _______ cord
lateral cord & medial cord
Musculocutaneous N is derived from the _____ cord
lateral cord
Roots of the musculocutaneous N
(C5,6)
Roots of the axillary N
C5,6
Roots of the median N
C5-T1
Roots of the radial N
C5-T1
Roots of the Ulnar N
C8,T1
The posterior cord gives off the ______ Branches
axiallary & Radial Branches
Cutaneous N of the axillary N
Superior lateral brachial cutaneous N (C5,6)
Cutaneous innervation of the inferior deltoid
superior lateral brachial Cutaneous N
from the axillary N.
Cutaneous N from the radial N
Inferior lateral brachial Cutaneous N
Lateral brachial cutaneous N is the terminal part of the ______N
Musculocutaneous N
Lateral brachial Cutaneous N gives sensory form the _____ to the _____
lateral epicondyle - radial portion of the wrist
Median N is a branch of the _____ cords
Lateral chord
Medial Chord
Brachial PLexus is derived from ______ Rami
ventral rami
The brachial plexus leaves the CNS btw what two muscles
anterior and middle scalenes
Terminal branch of the musculocutaneous N
lateral anti brachial cutaneous