brachial plexus Flashcards
What are the motor & sensory innervations of the musculocutaneous nerve?
Motor (musculo): anterior compartment of brachium
Sensory: anterior compartment of antebrachium
What are the motor & sensory innervations of the axillary nerve?
Motor: Inf delt & teres minor
Sensory: Delt & shoulder jt
What are the motor & sensory innervations of the ulnar nerve?
Motor & sensory: anterior compartment of forearm and hand
What are the motor & sensory innervations of the median nerve?
Motor & sensory: anterior compartment of antebrachium & hand (palm area)
What are the motor & sensory innervations of the radial nerve?
Motor & sensory: posterior compartment of arm & forearm
From which roots does each individual trunk originate from?
Superior trunk: C5 &C6
Middle trunk: C7
Inferior trunk: C8 & T1
From which divisions does each cord originate from?
Lateral cord: 1 anterior division
Posterior cord: 3 posterior divisions
Medial cord: 2 anterior divisions
What are the contents of the triangular space?
triangular space (TS)
-circumflex scapular a
What are the contents of the triangular interval?
triangular interval (TI)
-posterior circumflex humeral a.
-axillary n.
What are the contents of the quadrangular space?
quadrangular space (QS)
inside radial groove
-deep brachial a.
-radial n.
What are the borders of the quadrangular space?
Sup: Teres minor
Inf: Teres major
Medial: Long head of triceps brachii
Lat: Humerus
What are the borders of the triangular interval?
Sup: Teres major
Lat: Lateral head of triceps brachii
Medial: Long head of triceps brachii
What are the borders of the triangular space?
Sup: teres minor
Lat: Long head of triceps brachii
Inf: teres major
