Doc Ariel Brachial Plexus Flashcards
Brachial plexus
Nerve plexus supplying the thoracic limb.
Cervical nerves
Spinal nerves C6, C7, C8 contribute to plexus.
Thoracic nerves
T1 and T2 also involved in brachial plexus.
Suprascapular nerve
Primarily from C6, supplies shoulder muscles.
Subscapular nerve
Arises from C6 and C7, supplies subscapularis.
Axillary nerve
Branches from C7 and C8, innervates deltoid.
Musculocutaneous nerve
Mainly from C7, supplies flexor muscles.
Radial nerve
Arises from C7 to T2, extends forelimb.
Median nerve
Primarily from C8 and T1, innervates forelimb.
Ulnar nerve
Arises from C8 and T1, supplies forelimb.
Brachiocephalic nerve
C5 and C6, supplies neck and shoulder.
Cranial pectoral nerve
C6-C8, innervates pectoral muscles.
Caudal pectoral nerve
C8-T1-T2, supplies deeper pectoral muscles.
Lateral thoracic nerve
C8-T1, innervates skin and muscles of thorax.
Long thoracic nerve
C7, supplies serratus anterior muscle.
Autonomous zones
Skin area innervated by specific nerve.
Medial cutaneous antebrachial nerve
Innervates skin of antebrachium.
Caudal lateral brachial cutaneous nerve
Supplies skin over lateral triceps.
Lateral cutaneous antebrachial nerve
Innervates skin around lateral epicondyle.
Cranial lateral cutaneous brachial nerve
Supplies skin of cranial forearm.
Cranial cutaneous antebrachial nerve
Continuation of cranial lateral cutaneous brachial nerve.
Suprascapular artery
Accompanies suprascapular nerve, supplies shoulder.
Suprascapular vein
Drains blood from suprascapular region.
