The Brachial Plexus Flashcards
What does the brachial plexus supply?
UPPER LIMB
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SUPPORTING MM OF THE SCAPULA
Which ventral rami is the brachial plexus formed by?
CMTO obsession
C5 - T1
Name the 4 regions of the plexus?
ROOTS - emerging from D+V Rami \+ TRUNKS \+ DIVISIONS \+ CORDS
C5 - T1 is confusingly referred to as what?
the ROOTS of the BRACHIAL PLEXUS
The 5 brachial plexus roots unite to form what?
3 TRUNKS
The 3 trunks of the brachial plexus pass between which two muscles?
ANTERIOR SCALENE
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MIDDLE SCALENE
Each _______ of the brachial plexus splits into an anterior and posterior division, which supply different functions of the arm.
TRUNK
What function of the arm do the anterior division of the brachial plexus trunk supply?
FLEXOR MUSCLES
What function of the arm do the posterior division of the brachial plexus trunk supply?
EXTENSOR MUSCLES
- Musculocutaneous nerve - what does it innervate?
The 5 terminal branches of the Brachial Plexus
UPPER ARM FLEXORS:
- BICEPS BRACHII
- BRACHIALIS
- CORACOBRACHIALIS
- Ulner nerve - what does it innervate?
The 5 terminal branches of the Brachial Plexus
INTRINSIC MM OF HAND
+
EXCEPT thenar eminence
- Median nerve - what does it innervate?
The 5 terminal branches of the Brachial Plexus
FOREARM FLEXORS
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THENAR MUSCLES
- Axillary nerve - what does it innervate?
The 5 terminal branches of the Brachial Plexus
DELTOID
+
TERES MINOR
- Radial nerve - what does it innervate?
The 5 terminal branches of the Brachial Plexus
EXTENSORS OF ELBOW, WRIST and FINGERS
+
ANATOMICAL SNUFFBOX
Dorsal Scapular nerve - what does it innervate?
RHOMBOIDS
+
LEVATOR SCAPULA
