Brachial Plexus and Axilla Flashcards
Where are spinal nerves segmental?
T2-T11
Seen by dorsal primary rami
Plexus
Ventral rami refuse so that each nerve has more than one spinal cord level in it
Acronym for pattern of plexus
Real truckers drink cold beer
Roots, trunks, divisions, cord, branches
Trapezius innervated by
Accessory nerve
Spinal nerves included as roots of brachial plexus
C5, C6, C7, C8, T1
Roots lie between which two muscles?
Anterior and middle scalene
What runs between anterior and middle scalene
Subclavian artery, brachial plexus roots
Trunks and which roots compose them
Superior (C5 and C6) Lower roots (C8 and T1) Middle trunk (C7)
What do trunks divide into and what are they named for
Anterior and posterior divisions
Location to clavicle
Cords and how they are named and what they are ocmposed of
Lateral - anterior of superior and middle
Medial - anterior of inferior
Posterior - posterior of inferior, superior, and middle
Named for location to axillary artery
Where are cords located?
Axilla
What do anterior and middle cords supply?
Flexor muscles and anterior aspects of upper limb
Posterior cords supply
Extensor muscles and posterior of upper limb
Branches of Medial and lateral cords and where they come from
Musculocutaneous - lateral
Ulnar - medial
Median - lateral and medial
Musculocutaneous branch innervation
Flexor component of the arm and becomes cutaneous name in forearm
Musculocutaneous in the forearm called
Lateral antebrachial cutaneous nerve
Ulnar branch innervates
Muscles and skin in forearm and hand…none in arm
Median branch innervates
Anterior of forearm and some hand
Carpal tunnel syndrome
Branches of posterior cord and location
Axillary - through quadrangular space
Radial - winds around humerous and travels down
Axillary branch innervation
Deltoid muscles and skin, teres minor
Radial branch innervation
all extensors of arm and anterior of forearm
Branches from roots and which roots
Dorsal scapular - C5
Long thoracic - C5-C7