Innervation of Upper Limbs Flashcards Preview

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Flashcards in Innervation of Upper Limbs Deck (21):
1

Where does the axillary artery branch from?

Subclavian

2

After passing which structure does the axillary artery become the brachial artery?

Teres major

3

What two arteries anastomose around the surgical neck of the humerous?

Anterior and posterior circumflex

4

Just before passing under pectoralis minor what artery branches of the axillary artery?

Thorasico-acromial artery

5

When does the axillary vein bifurcate?

Right at the boundary

6

What does the axillary vein bifurcate into?

Cephalic vein (lateral side of the arm to thumb)
Basillic vein (median side of the arm to the finger)

7

Where is blood commonly taken from within the cubital fossa?

Median cubital (communicating) vein

8

During biopsy of the lymph nodes what nerve is most likely to be damaged, and how would you be able to tell?

Long thorassic nerve
Winged scapula (as seratous anterior innervation is lost)

9

Which spinal nerves fuse to form the musculocutaneous nerve within the brachial plexus?

C5
C6

10

Which spinal nerves fuse to form the axillary nerve within the brachial plexus?

C5
C6

11

Which spinal nerves fuse to form the median nerve within the brachial plexus?

C7
C8
T1

12

Which spinal nerves fuse to form the radial nerve within the brachial plexus?

C6
C7
C8

13

Which spinal nerves fuse to form the ulnar nerve within the brachial plexus?

C8
T1

14

What does the musculocutaneous nerve of the brachial plexus supply?

Flexors of the upper arm

15

What does the axillary nerve of the brachial plexus supply?

Deltoids

16

Which artery does the axillary nerve run alongside?

Posterior communicating artery

17

Name the three flexor muscles?

BBC -
Biceps brachii
Brachialis
Coracobrachii

18

What motor and sensory deficits may be seen with a upper brachial plexus injury (C5/C6)?

Loss of flexion at the elbow and shoulder
Loss of abduction of the shoulder and arm
Loss of lateral rotation of the shoulder
Loss of sensation at lateral aspect of arm

19

What motor and sensroy deficits may be seen with a lower brachial plexus injury (C8/T1)?

Loss of wrist and finger movement
Loss of sensation at medial aspect of arm and hand

20

What motor and sensroy deficits may be seen with an axillary nerve injury?

Loss of motor control to the deltoid therefore loss of abduction of shoulder and lateral rotation
Loss of sensation the the sergeants patch (C5)

21

What motor deficits may be seen with an thoracodorsal nerve injury?

Loss of motor control to the lattisimus dorsi muscle and therefore loss of adduction of the shoulder