Neurology of the upper limb Flashcards Preview

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Flashcards in Neurology of the upper limb Deck (24)
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1

Point out which dermatome innervates which area

ref. notes

2

which nerve is responsible for which movement of upper limb: abduction of arm, flexion of finger, adduction finger, flexion+extension elbow

abduction of arm,=C5
flexion of finger=C7,8
adduction finger=t1
flexion+extension elbow=C5,6 flex c6-8 extend

3

Where does the brachial plexus lie

Through the cervicoaxillary canal and axillary fossa
through scalene, below pec minor, above subscapulariss

4

what are the roots of the brachial plexus, draw out the brachial plexus

C5-T1
ref. notes

5

What does the dorsal scapular nerve do and where are its roots

innervates rhomboids and levator scapulae
root=C4, C5 pierces middle scalene

6

What does the long thoracic nerve do and where are its roots

innervates serratus anterior
root=C5, C6, C7. C5+6 pierce middle scalene, C7 passes in front of muscle. Descends posterior to axillary artery and vein alongside of thorax

7

What does damage to the Long thoracic nerve cause

winged scapula

8

Where does the brachial plexus lie

Through the cervicoaxillary canal and axillary fossa
through scalene, below pec minor, above subscapulariss

9

what are the roots of the brachial plexus, draw out the brachial plexus

C5-T1
ref. notes

10

What does the dorsal scapular nerve do and where are its roots

innervates rhomboids and levator scapulae
root=C4, C5 pierces middle scalene

11

what does the axillary nerve do and where are its roots

innervates teres minor, deltoid, glenohumeral joint, skin over inferior deltoid
exits axilla through quadrangular space with posterior circumflex humeral artery
gives rise to superior lateral brachial cutaneous nerve, then winds around surgical neck of humerus
c5, c6

12

what does the musculocutaneous nerve do and where are its roots

Innervates muscles of the anterior arm (flexor compartment: biceps brachii, coracobrachialis, brachialis), with a branch to the humerus (nutrient foramen), and continues as lateral cutaneous nerve of the forearm
C5-C7

13

What does suprascapular nerve innervate and where are its roots

innervates glenohumeral joint, infraspinaturs, supraspinatus
c4-c6

14

what does the lateral pectoral nerve do and where are its roots

Innervates pec major and minor
C5-C7

15

what does the ulnar nerve do and where are its roots

Innervates 1 ½ muscles of the anterior forearm (flexor compartment): flexor carpi ulnaris & flexor digitorum profundis, and multiple muscles of the hand
Sensory innervation of lateral palm of hand and 1 ½ digits
C8, T1

16

what does theaxillary nerve do and where are its roots

innervates teres minor, deltoid, glenohumeral joint, skin over inferior deltoid

17

what does the musculocutaneous nerve do and where are its roots

Innervates muscles of the anterior arm (flexor compartment: biceps brachii, coracobrachialis, brachialis), with a branch to the humerus (nutrient foramen), and continues as lateral cutaneous nerve of the forearm
C5-C7

18

what does the median nerve do and where are its roots

Innervates muscles of the anterior forearm (flexor compartment) with two exceptions, thenar eminence and lumbricals of the hand
Sensory innervation of medial palm of hand and 3 ½ digits
C6, C7, C8, T1

19

what ligament does the median nerve go under in the carpal tunnel

transverse carpal lig.

20

what does the ulnar nerve do and where are its roots

Innervates 1 ½ muscles of the anterior forearm (flexor compartment): flexor carpi ulnaris & flexor digitorum profundis, and multiple muscles of the hand
Sensory innervation of lateral palm of hand and 1 ½ digits
C8, T1

21

what does the radial nerve do and where are its roots

Innervates posterior (extensor) compartment of arm and forearm
C5-C8 and T1

22

what does damage to the radial nerve do

Saturday night palsy, ‘Honeymoon palsy’, Wrist drop, Wartenberg syndrome

23

what does damage to the ulnar nerve do

mallet fingers

24

what does damage to the median nerve do

carpal tunnel syndrome