Brainscape's Knowledge GenomeTM

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


See full index

Extremities (2) > Brachial Plexus > Flashcards

Brachial Plexus Flashcards

1
Q

Syndrome produced by compression of the components of the brachial plexus, the subclavian artery, or subclavian vein.

A

Thoracic outlet syndrome

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

Subtypes of thoracic outlet syndrome

A

Neurogenic TOS
Anterial TOS
Venous TOS

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

Positional Compression vs static compression of TOS

A

Positional: caused by movement of the clavicle and shoulder girdle with arm movement

Static: caused by abnormalities of enlargement of the various muscles surrounding the arteries veins and brachial plexus

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

What is the brachial plexus formed by

A

The union of the anterior rami of C5-C8 and T1 (roots of the BP)

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

In the subclavicular area of the BP, the roots unite to form these trunks:

A

Superior (upper): C5 and C6
Middle- C7 continues
Inferior- C8 and T1

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

As the trunks of BP pass lateral to the 1st rib, each trunk:

A

Splits into ant and post divisions as they pass beneath the clavicle and enter the cervicoaxillary canal

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

Ant divisions of the BP innervate:

A

The muscles of the ant compartment in the arm and forearm

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

Post divisions of the BP innervate:

A

Muscles of the post compartment of the arm and forearm

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

BP cords:

Where do they form?

A

Lateral
Medial
Posterior

Form in the area superior to the pect minor

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

What forms the lateral cord?

A

Superior and middle anterior divisions

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

What forms the medial cord?

A

Inferior anterior division of the inferior trunk

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

What forms the posterior cord?

A

Posterior divisions

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

Lateral cord becomes the:

A

Musculocutaneous cord

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

The medial cord becomes the

A

Ulnar nerve

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

The posterior cord becomes the:

A

Radial nerve

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

The lateral and medial cord unite together to for the:

A

Median nerve

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

Branches from the rami and what they innervate: (2)

A

Dorsal scapular nerve- rhomboids, levator scapula

Long thoracic nerve— serratus anterior

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

Branches from trunks/divisions and what they innervate (2)

A

Nerve to subclavius — subclavius

Suprascapular—- supraspinatus, infraspinatus

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

Nerves from the cords (7) and what they innervate

A

Lateral pectoral nerve- pect major
Medial pectoral nerve- pect major and minor
Medial brachial cutaneous nerve— skin, medial arm
Medial antebrachial cutaneous nerve— skin, medial forearm
Lower subscapular nerve- teres major, subscapularis
Upper subscapular nerve— subscapularis
Thoracodorsal nerve— latissimus dorsi

20
Q

Root branches (3)

A

Dorsal scapular
Long thoracic
C5 gives a root to the phrenic nerve

21
Q

Dorsal scapular nerve (_____), and pathway

A

C5 root

Pierces middle scalene and passes inf. To the rhomboids

22
Q

Long thoracic nerve pathway

A

From C5-7 roots passes inferiorly onto the surface of the serratus anterior

23
Q

Trunk branch, and its pathway

A

Nerve to subclavius— passes directly to the inf. Surface of clavicle gives branch to sternoclavicular joint

24
Q

Division branch and its pathway

A

Subscapular nerve (ant division sup trunk)- runs parallel to the Suprascapular artery to the Suprascapular notch (beneath the suprascapular ligament) supplies the supraspinatus m, around the greater scapular notch to the infraspinatus muscle.

25
Q

What supplies the scalene and longus coli muscles

A

Small branches araise from all roots

26
Q

Big and little branches to lateral cord

A

Big- musculocutaneous lateral

Small- lateral pectoral

27
Q

Big and little branches of the posterior cord

A

Big- axillary radial

Little- upper subscapular, lower subscapular and thoracodorsal

28
Q

Big and little branches of the medial cords:

A

Big- ulnar, medial

Little- medial pectoral, medial brachial cutaneous and medial antebrachial cutaneous

29
Q

Passage of musculocutaneous

A

Pierces coracobrachialis m and then emerges between the biceps and brachialis, becomes the lateral cutaneous nerve to the forearm- runs parallel to the cephalic vein in the forearm

30
Q

Muscles innervated by musculocutaneous nerve

A

Coracobrachialis
Biceps brachial
Brachialis

(Elbow flexors and supinators)

31
Q

Passage of the lateral pectoral

A

Pierces the clavicopectoral fascia superior to pect minor- enters the clavicular head of pect major

32
Q

Passage of axillary branch

A

Passes through the quadrangular space with post circumflex humeral artery, sends a cutaneous branch and branch to teres minor. Then passes post to surgical neck and supplies deltoid m

33
Q

Muscle(s) innervated by axillary nerve

A

Teres minor

Deltoid

34
Q

Passage of radial nerve

A

Passes around humerus at radial groove w/ profound a brachii artery to the lateral humerus inf to deltoid insertion.
Runs between the brachioradialis and brachialis m- just proximal to the elbow it divides into the deep and superficial branches

35
Q

Muscles innervated by radial nerve

A

Triceps brachii
Brachioradialis
Extensor Capri radialis (branch just proximal to elbow)

36
Q

Passage of the upper subscapular branch

A

Passes directly to subscapularis

37
Q

Muscles innervated by upper subscapular nerve

A

Subscapularis

38
Q

Passage of the lower subscapular

A

Passes directly to subscapularis with a branch to teres major

39
Q

Muscles innervated by lower subscapular

A

Subscapularis

Teres major

40
Q

Passage of ulnar nerve

A

Follows axillary artery into the arm to accompany the brachial artery- runs medial to the medial epicondyle and enters the forearm between the ulnar and humeral heads of flexor carpi ulnaris

41
Q

Medial branch forms

A

Medial nerve

42
Q

Passage of medial pectoral nerve

A

Pierces pec minor and enters pec major

43
Q

Passage of medial brachial cutaneous

A

Runs parallel and abuts axillary and brachial veins to the medial aspect of the arm

44
Q

Passage of medial antebrachial cutaneous

A

Runs with axillary and brachial arteries then runs inferiorly with the basilic vein

45
Q

Passage of the median nerve

A

Forms from medial and lateral branches on anterior surface of axillary artery (encircles the axillary artery)- accompanies the brachial artery into the forearm, enters the forearm between the deep and superficial head of the pronator teres

46
Q

Muscles innervated by median nerve

A 
Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor digitorum superficialis
Flexor digitorum profundus (digits 2/3)
Flexor policy’s longus
Pronator quadratics 
Thenar muscle
Lumbricals 1 and 2

Extremities (2) (28 decks)

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