Trapezius
Nerve supplying trapezius
What is the spinal accessory nerve (CN XI)?
Nerve supplying rhomboids
What is the dorsal scapular nerve?
Nerve supplying latissimus dorsi
What is the thoracodorsal nerve?
Spinal roots forming brachial plexus
What are C5–T1?
Injury to upper trunk (C5–C6)
What is Erb’s palsy?
Action of upper trapezius fibers
What is elevation of the scapula?
Primary action of rhomboids
What is scapular retraction?
Primary action of latissimus dorsi
What is extension of the arm?
Five parts of the brachial plexus
What are roots, trunks, divisions, cords, branches?
Classic posture in Erb’s palsy
What is “waiter’s tip” position?
Action of middle trapezius fibers
What is scapular retraction (adduction)?
Muscle that elevates scapula
What is levator scapulae?
Additional actions of latissimus
What are adduction and medial rotation?
Three trunks of brachial plexus
What are upper, middle, and lower trunks?
Injury to lower trunk (C8–T1)
What is Klumpke’s palsy?
Action of lower trapezius fibers
What is scapular depression and upward rotation?
Action of rhomboids during downward rotation
What is scapular downward rotation?
Insertion of latissimus dorsi
What is floor of the intertubercular (bicipital) groove?
Three cords of brachial plexus
What are lateral, medial, and posterior cords?
Muscle paralyzed in long thoracic nerve injury
What is serratus anterior?
Muscle that works with trapezius for upward rotation
What is serratus anterior?
Spinal roots of dorsal scapular nerve
What is C5?
Cord giving rise to thoracodorsal nerve
What is the posterior cord?
Structure dividing each trunk
What are anterior and posterior divisions?
Sign of trapezius paralysis
What is shoulder droop?