Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Year 2: Anatomy Revision > 1. Brachial Plexus > Flashcards

1. Brachial Plexus Flashcards

1
Q

The anterior rami of which spinal nerves make up the roots of the brachial plexus?

A

C5, C6, C7, C8, T1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

The superior trunk is formed by what roots?

A

C5 + C6

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

The middle trunk is formed by what roots?

A

C7

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

The inferior trunk is formed by what roots?

A

C8 + T1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What forms the lateral cord?

A

Anterior divisions of superior and middle trunks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What forms the posterior cord?

A

Posterior divisions of superior, middle and inferior trunks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What forms the medial cord?

A

Anterior division of inferior trunk

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

The musculocutaneous nerve is a branch of which cord?

A

Lateral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What roots make up the musculocutaneous nerve?

A

C5,C6,C7

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Musculocutaneous nerve supplies motor function to which muscles?

A

Biceps brachii, brachialis, coracobrachialis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

The axillary nerve is a branch of which cord?

A

Posterior

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What roots make up the axillary nerve?

A

C5,C6

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Axillary nerve supplies motor function to which muscles?

A

Teres minor, deltoid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Axillary nerve supplies sensory to which area?

A

‘regimental badge area’- inferior deltoid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How can the axillary nerve be damaged? What is the clinical sign?

A

Humeral neck fracture/dislocation

Flattened deltoid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

The median nerve is formed by the union of which two cords?

A

Lateral + medial cords

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What roots make up the median nerve?

A

C5,C6,C7,C8,T1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What muscles of the hand are supplied by the median nerve?

A 
LOAF muscles:
L- Lateral two lumbricals
O- Opponens pollis
A- Abductor pollis brevis
F- Flexor pollis brevis
19
Q

What other muscles apart from LOAF does the median nerve supply?

A

The flexors of the forearm

20
Q

Median nerve supplies sensory to what aspect of the hand?

A

Palmar aspect of lateral 3.5 fingers

21
Q

What does compression of the median nerve result in?

A

Carpal tunnel syndrome

22
Q

The radial nerve is a branch of which cord?

A

Posterior

23
Q

What roots make up the radial nerve?

A

C5,C6,C7,C8,T1

24
Q

What muscles receive motor supply from the radial nerve?

A

Triceps + extensor muscles of the forearm

25
Q

Radial nerve supplies sensory supply to where?

A

Anatomical snuff box, posterior aspect of the arm and forearm

26
Q

How is the radial nerve injured? What is the clinical sign?

A

Humeral mid shaft fracture.

WRIST DROP

27
Q

Ulnar nerve is a branch of which cord?

A

Medial

28
Q

What roots make up the ulnar nerve?

A

C8,T1

29
Q

Ulnar nerve supplies motor function to which muscles?

A

Intrinsic muscles of the hand except lOAF muscles

Flexor carpi ulnaris

30
Q

Ulnar nerve supplies sensory to what aspect of the hand?

A

Palmar aspect of medial 1.5 fingers

31
Q

How is the ulnar nerve damaged? What is the clinical sign?

A

Medial epicondyle fracture

CLAW HAND

32
Q

What roots form the long thoracic nerve?

A

C5,C6,C7

33
Q

Long thoracic nerve supplies motor to which muscle?

A

Serratus anterior

34
Q

Damage to the long thoracic nerve gives which clinical sign?

A

Winged scapula

35
Q

What is Erbs palsy? Which roots are affected?

A

Upper brachial plexus palsy. C5 + C6

36
Q

Which nerves are affected in Erbs palsy?

A

Musculocutaneous, Axillary, Suprascapular

37
Q

Name the muscles which are paralysed in Erbs palsy

A

Supraspinatus, infraspinatus, subclavius, biceps brachii, brachialis, coracobrachialis, deltoid and teres minor.

38
Q

What sign is characteristic of Erbs palsy?

A

Waiters tip position

39
Q

What is Klumpkes palsy? Which roots are affected?

A

Lower brachial plexus palsy. T1

40
Q

What nerves are affected in Klumpkes palsy? What muscles area paralysed as a result?

A

Ulnar and median nerve.

All the muscles of the hand

41
Q

What sign does klumpke’s palsy result in?

A

Claw hand

42
Q

How does klumpke’s palsy typically occur?

A

Excessive abduction of the arm e.g. person catching a branch as they fall from a tree

43
Q

what injuries can cause damage to median nerve?

A

Dislocation of lunate

Supracondylar fracture

44
Q

Stab wound to axilla damages which nerve?

A

Musculocutaneous

Year 2: Anatomy Revision (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions