Brachial Plexus Flashcards
Whats the innervatino for the dorsal scapular nerve?
Rhomboids occassionally supplies the levator scap
Whats the origin of the dorsal scapula?
Posterior aspect of c5 with frequent contribution from c4
Long thoracic origin
Posterior aspect of anterior rami of c5,c6,c7
What structures are innervated by the long thoracic nerve?
Serratus anterior
Whats the origin of the suprascapular nerve?
C5, c6 and often c4
Whats the innervation of the suprascapular nerve?
Supraspinatous and infraspinatous muscles; glenohumeral (shoulder) joint
Whats the origin for the subclavian nerve?
Superior trunk, recieving fibers from c5, c6 and often c4
Whats the innervation of the subclavian nerve?
Subclavius and sternocoavicular joint
Whats the origin of the lateral pectoral nerve?
Side branch of lateral cord, recoeving fibers from c5, c6, c7
Whats the innervation of the lateral pectoral nerve?
Primary pectoralis major, but some lateral pectoral merve fibers pass to pactorakis minor via branch to medial pectoral nerve
Whats the origin of the musculocuntaneuous?
The terminal branches of c5-c7
Whats the innervation of the musculatenous?
Muscles of anterior compartment of arm
Whats the origin of the median?
Lateral root of median nerves is a terminal branch of lateral cord (c6, c7) fibers; median root of median nerve is a terminal branch of median cord (c8, T1 fibers)
Whats the innervation of the median?
Muscles of anterior forearm compartnment , five intrinsic muscles thenar half of palm and palmar skin
Whats the origin of medial pectoral?
Side branches of medial cord of C8, t1
Whats the innervation of the medial pectoral?
Pectoralis minor and sternocostal part of pectoraois major
Whats the origin of medial cutaneous nerve of the arm?
Side branches of medial cord, recieiving fibers from c8, t1
Whats the innervation of the medial cutaneous nerve of arm?
Skin of medial side of arm, as far distal as medial epicondyle of humerus and olecranon of ulna
Whats the origin of the median cutaneous nerve of the forearm?
Side branches of medial cord, recieving fibers from c8, t1
Whats the innervation of the medial cutaneous nerve of the forearm?
The skin of medial side of forearm, as far distal as wrist
Whats the origin of the ulnar?
The larger terminal branch of medial cord recieving fibers from c8, t1 and often c7
Whats the innervation of the ulnar?
Flexor carpi ulnaris and ulnar half of flexor digitorum profundis(forearm); most intrinsic muscles of hand; skin of hand medial to axis line of digit 4
Whats the origin of the upper subscapular?
Side branch of posterior cord recieving fibers from c5
Whats the innervation of the upper subscapular?
Superior portion of subscapularis
Whats the origin of the lower subscapular?
Side branch of posterior cord, recieving fibers from c6
Whats the innervation of the lower subscapular?
Inferior portion of subscapularis and teres major
Whats the origin of the thoracodorsal?
Side branch of posterior cord, recieving fibers from c6, c7, c8
Whats the innervation of the thoracodorsal?
Latissimus dorsi
Whats the origin of the axillary?
Terminal branch of posterior cord, recieving fibers from c5,c6
Whats the innervation of the axillary?
Glenuhumeral (shoulder) joint, teres minor and deltoid muscles,mskin of superolateral arm
Whats the origin of the radial?
Larger terminal branch of posterior cord (largest branch of plexus) recieving fibers from c5-t1
Whats the innervation of the radial?
All muscles of posterior compartments pf arm and forearm; skin of anterior and inferplateral arm, posterior forearm, and dorsum of hand lateral tp axial line of digit 4
