The Brachial Plexus Flashcards Preview

SCT3 Neurology Topic 4 > The Brachial Plexus > Flashcards

Flashcards in The Brachial Plexus Deck (17)
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1
Q

What does the brachial plexus supply?

A

UPPER LIMB
+
SUPPORTING MM OF THE SCAPULA

2
Q

Which ventral rami is the brachial plexus formed by?

CMTO obsession

A

C5 - T1

3
Q

Name the 4 regions of the plexus?

A
ROOTS - emerging from D+V Rami
\+
TRUNKS
\+
DIVISIONS
\+
CORDS
4
Q

C5 - T1 is confusingly referred to as what?

A

the ROOTS of the BRACHIAL PLEXUS

5
Q

The 5 brachial plexus roots unite to form what?

A

3 TRUNKS

6
Q

The 3 trunks of the brachial plexus pass between which two muscles?

A

ANTERIOR SCALENE
+
MIDDLE SCALENE

7
Q

Each _______ of the brachial plexus splits into an anterior and posterior division, which supply different functions of the arm.

A

TRUNK

8
Q

What function of the arm do the anterior division of the brachial plexus trunk supply?

A

FLEXOR MUSCLES

9
Q

What function of the arm do the posterior division of the brachial plexus trunk supply?

A

EXTENSOR MUSCLES

10
Q
  1. Musculocutaneous nerve - what does it innervate?

The 5 terminal branches of the Brachial Plexus

A

UPPER ARM FLEXORS:

  • BICEPS BRACHII
  • BRACHIALIS
  • CORACOBRACHIALIS
11
Q
  1. Ulner nerve - what does it innervate?

The 5 terminal branches of the Brachial Plexus

A

INTRINSIC MM OF HAND
+
EXCEPT thenar eminence

12
Q
  1. Median nerve - what does it innervate?

The 5 terminal branches of the Brachial Plexus

A

FOREARM FLEXORS
+
THENAR MUSCLES

13
Q
  1. Axillary nerve - what does it innervate?

The 5 terminal branches of the Brachial Plexus

A

DELTOID
+
TERES MINOR

14
Q
  1. Radial nerve - what does it innervate?

The 5 terminal branches of the Brachial Plexus

A

EXTENSORS OF ELBOW, WRIST and FINGERS
+
ANATOMICAL SNUFFBOX

15
Q

Dorsal Scapular nerve - what does it innervate?

A

RHOMBOIDS
+
LEVATOR SCAPULA

16
Q

Long Thoracic nerve - what does it innervate?

A

SERRATUS ANTERIOR

17
Q

Thoracodorsal nerve - what does it innervate?

A

LATISSIMUS DORSI