Brainscape's Knowledge GenomeTM

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


See full index

anatomy > Brachial plexus > Flashcards

Brachial plexus Flashcards

1
Q

What muscles and sensory area does the axillary nerve serve?

A

Muscles:
Deltoid
Teres minor
Sensory Area:
The skin over the upper lateral part of the arm

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

What do the posterior divisions of the brachial plexus form?

A

the posterior cord

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

What muscles and sensory area does the ulnar nerve serve?

A

Motor: All intrinsic muscles of the hand
Sensory: Skin over the medial one and one-half digits, medial palm and wrist.

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

What is the origin of the medial cutaneous nerve of the forearm?

A

Medial cord (C8, T1).

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

Which nerve from the medial cord innervates both the pectoralis major and minor?

A

Medial Pectoral Nerve

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

What is the origin of the nerve to subclavius?

A

Superior trunk (C5, C6).

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

What muscle does the lateral pectoral nerve innervate?

A

Pectoralis Major

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

Do any peripheral nerves originate directly from the divisions?

A

No

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

Which roots form the inferior trunk of the brachial plexus?

A

C8-T1

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

What muscle does the superior subscapular nerve innervate?

A

Subscapularis.

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

What is the origin of the radial nerve?

A

Posterior Cord (C5-T1)

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

Where is the inferior trunk located relative to the subclavian artery?

A

On rib I, posterior to the subclavian artery

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

Which cords give rise to nerves associated with the anterior compartments of the upper limb?

A

The lateral and medial cords.

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

What muscle does the nerve to subclavius innervate?

A

Subclavius

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

What muscles does the suprascapular nerve innervate?

A

Supraspinatus, infraspinatus.

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

What is the origin of the musculocutaneous nerve?

A

Lateral cord (C5 to C7).

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

What sensory area does the medial cutaneous nerve of the arm serve?

A

Skin on the medial side of the distal one-third of the arm.

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

Which cord gives rise to nerves associated with the posterior compartments of the upper limb?

A

Posterior Cord (C5-T1)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is the origin of the lateral pectoral nerve?

A

Lateral cord (C5 to C7).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is the origin of the median nerve?

A

Medial and lateral cords (C5, C6 to T1)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What muscle does the thoracodorsal nerve innervate?

A

Latissimus dorsi

22
Q

What muscle does the long thoracic nerve innervate?

A

Serratus anterior.

23
Q

Which nerve innervates the skin on the medial side of the forearm?

A

The medial cutaneous nerve of the forearm

24
Q

What muscles does the inferior subscapular nerve innervate?

A

subscapularis and teres major muscles

25
Q

What muscles are innervated by a nerve that originates from the superior trunk of the brachial plexus?

A

suprascapular nerve, innervates the following muscles:

Supraspinatus
Infraspinatus

26
Q

What forms the lateral cord of the brachial plexus?

A

the union of the anterior divisions of the upper and middle trunks (C5 to C7).

27
Q

Where do the roots and trunks of the brachial plexus enter the posterior triangle of the neck?

A

Between the anterior and middle scalene muscles, superior and posterior to the subclavian artery.

28
Q

What sensory areas are innervated by the ulnar nerve?

A

The medial one and a half digits (the little finger and half of the ring finger).
The medial palm and wrist.

29
Q

What is the origin of the axillary nerve?

A

Posterior cord (C5, C6).

30
Q

What is the origin of the long thoracic nerve?

A

C5 to C7 roots.

31
Q

What muscles and sensory area does the radial nerve serve?

A

Motor: All muscles in the posterior compartments of the arm and forearm.
Sensory: Skin on the posterior aspects of the arm and forearm, lateral side of the hand

32
Q

What is the origin of the superior subscapular nerve?

A

Posterior Cord (C5-C6)

33
Q

The long thoracic nerve is crucial for which muscle’s function?

A

serratus anterior

34
Q

What is the origin of the inferior subscapular nerve?

A

Posterior cord (C5, C6).

35
Q

What muscles and sensory area does the median nerve serve?

A

Motor: All muscles in the anterior compartment of the forearm except flexor carpi ulnaris and medial half of flexor digitorum profundus, three thenar muscles, two lateral lumbrical muscles.
Sensory: Skin over the lateral three and one-half digits and lateral palm.

36
Q

What sensory area does the medial cutaneous nerve of the forearm serve?

A

the sensory area on the medial side of the forearm.

37
Q

What is the origin of the thoracodorsal nerve?

A

Posterior cord, C5 to C7 roots.

38
Q

What is the origin of the medial cutaneous nerve of the arm?

A

Medial cord (C8, T1).

39
Q

What do the anterior divisions of the brachial plexus form?

A

Lateral and medial cords. Nerves for the anterior compartments of the arm and forearm.

40
Q

What is the origin of the dorsal scapular nerve?

A

C5 root.

41
Q

What is the origin of the medial pectoral nerve?

A

Medial cord (C8, T1).

42
Q

What muscles does the dorsal scapular nerve innervate?

A

Rhomboid major, rhomboid minor, levator scapulae

43
Q

What forms the medial cord of the brachial plexus?

A

The continuation of the anterior division of the inferior trunk (C8 and T1).

44
Q

What forms the posterior cord of the brachial plexus?

A

The union of all three posterior divisions (C5 to T1).

45
Q

What muscles and sensory area does the musculocutaneous nerve serve?

A

Motor: All muscles in the anterior compartment of the arm.
Sensory: Skin on the lateral side of the forearm.

46
Q

What muscles does the medial pectoral nerve innervate?

A

The medial pectoral nerve innervates the following muscles:

Pectoralis major (sternocostal head)
Pectoralis minor

47
Q

Which roots form the superior trunk of the brachial plexus?

A

C5 & C6

48
Q

What is the origin of the suprascapular nerve?

A

Superior trunk (C5, C6).

49
Q

What is the origin of the ulnar nerve?

A

Medial cord (C7, C8, T1).

50
Q

What forms the middle trunk of the brachial plexus?

A

A continuation of the C7 root.

anatomy (7 decks)

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