Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

PNS #3 > Brachial Plexus > Flashcards

Brachial Plexus Flashcards

1
Q

What rami make up the brachial plexus?

A

Anterior primary rami C5-T1

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

What fibers MAY be in the brachial plexus?

A

C4 and/or T2

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

What is the course of the brachial plexus to enter the axilla?

A

Travels laterally over rib 1

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

What is the order of things going from medical to lateral in the brachial plexus?

A

Roots to trunks to divisions to cords to terminal nerves

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

Every brachial plexus receives what from the sympathetic trunk?

A

Gray rami communicans

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

What are the three cervical ganglia giving rise to the gray rami communicans of the brachial plexus?

A

Superior
Middle
Inferior (stellate)

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

Roots pass between what structures to enter the posterior triangle?

A

Anterior and middle scalene with 1st rib

Scalene triangle

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

The roots of the brachial plexus are posterior and superior to what structure?

A

Subclavian artery

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

Roots of C5-6 combine making….?

A

Superior trunk

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

What is the superior trunk made of?

A

Roots C5-6

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

Root of C7 makes up….?

A

Middle trunk

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

What roots make up the middle trunk?

A

C7 root

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

The roots of C7-8 combine forming….?

A

Inferior trunk

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

The inferior trunk is made up of?

A

Roots C7-8

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

What does each trunk split into?

A

Anterior and posterior divisions

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

What do the anterior divisions supply?

A

Anterior compartments of arm and forearm

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

What do the posterior divisions supply?

A

Posterior compartments of arm and forearm

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

What are the anterior compartments of arm and forearm supplied by?

A

Anterior divisions

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

What are the posterior divisions of the arm and forearm supplied by?

A

Posterior divisions

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

Cords are named based on their relationship to what structure?

A

Axillary artery

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

What is the lateral cord formed from?

A

Anterior divisions of superior and middle trunks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Where is the lateral cord in relation to the axillary artery?

A

Lateral to second part of artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What fibers are found in the lateral cord?

A

C5-C7

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What forms the medial trunk?

A

Anterior division of inferior trunk

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
What fibers are found in the medial cord?
C8-T1
26
Where is the medial cord in relation to the axillary artery?
Medial to second part of the artery
27
What is the posterior cord made of?
The posterior divisions of the superior, middle, and inferior trunks
28
What fibers are found in the posterior cord?
C5-T1
29
Where is the posterior cord in relation to the axillary artery?
Posterior to the second part of the artery
30
What nerves are given off directly from roots of the brachial plexus?
Dorsal scapular nerve | Long thoracic nerve
31
The root of C5 gives of what nerve?
Dorsal scapular nerve
32
What fibers are found in the dorsal scapular nerve?
C5 only
33
What does the dorsal scapular nerve innervate?
Lavator scapula Rhomboid major Rhomboid minor
34
What muscle innervated by the dorsal scapular nerve also receives fibers from C3-4?
Levator scapula
35
The roots of C5-7 give off what nerve?
Long thoracic nerve
36
What fibers are found in the long thoracic nerve?
C5-7
37
What does the long thoracic nerve innervate?
Serratus anterior
38
What nerves does the superior trunk give off?
Suprascapular nerve | Nerve to subclavius
39
What fibers are found in the suprascapular nerve?
C5-6
40
What does the suprascapular nerve innervate?
Supraspinatus | Infraspinatus
41
What fibers are found in the nerve to the subclavius?
C5-6
42
What does the nerve to the subclavius innervate?
Subclavius
43
What nerves are given off of the lateral cord of the brachial plexus?
Lateral pectoral nerve Musculocutaneous nerve Helps form Median nerve
44
What fibers are found in the lateral pectoral nerve?
C5-7
45
What does the lateral pectoral nerve innervate?
Pectoralis major
46
Pectoralis major is double innervated by?
Lateral pectoral nerve | Medial pectoral nerve
47
What are the two terminal branches of the lateral cord?
Musculocutaneous nerve | One contributing to the Median Nerve
48
What fibers are found in the musculocutaneous nerve?
C5-7
49
How many muscles does the musculocutaneous nerve innervate?
3
50
What muscles does the musculocutaneous nerve supply?
Coracobrachialis Biceps brachii (both heads) Brachialis
51
Coracobrachialis, biceps brachii, and brachialis are all innervated by what nerve?
Musculocutaneous nerve
52
What muscle belly is pierced by the musculocutaneous nerve?
Coracobrachialis
53
Corncob racialist is pierced by what nerve?
Musculocutaneous nerve
54
What does the musculocutaneous nerve continue as in the forearm?
Lateral cutaneous nerve of the forearm
55
The lateral cutaneous nerve of the forearm is a continuation of what nerve of the brachial plexus?
Musculocutaneous nerve
56
How does the musculocutaneous nerve travel into the forearm to become the lateral cutaneous nerve of the forearm?
Between the biceps brachii and brachialis Cut off: after crossing the elbow
57
The skin on the lateral aspect of the forearm is supplied by what nerve?
Lateral cutaneous nerve of the forearm
58
What does the lateral cutaneous nerve of the forearm supply?
Skin over the lateral aspect of the forearm, not hand
59
What are the beaches given off of the medial cord?
``` Medial pectoral nerve Medial cutaneous nerve of the arm Medial cutaneous nerve of the forearm Ulnar nerve Median nerve ```
60
What fibers are found in the medial pectoral nerve?
C8-T1
61
What does the medial pectoral nerve innervate?
Pectoralis major | Pectoralis minor
62
What does the medial cutaneous nerve of the arm innervate?
Skin of the medial arm between the axilla and elbow
63
What fibers are found in the medial cutaneous nerve of the arm?
C8-T1 | Some T2 though intercostalbrachial nerve
64
What nerve receives fibers from T2 through a communication with the intercostobrachial nerve?
Medial cutaneous nerve of the arm
65
What fibers are found in the medial cutaneous nerve of the forearm?
C8-T1
66
Where does the medial cutaneous nerve of the forearm leave the medial cord?
Just distal to the medial cutaneous nerve of the arm
67
What nerve is given off just distal to the medial cutaneous nerve of the arm?
Medial cutaneous nerve of the forearm
68
What does the medial cutaneous nerve of the forearm supply?
Skin over biceps brachii, anterior and medial aspects of forearm distal to wrist
69
Is there overlap of the medial cutaneous nerve of arm and forearm supply areas?
Yes
70
What fibers are found in the ulnar nerve?
C8-T1 | Sometimes C7
71
How does the ulnar nerve travel?
Medial to the brachial artery, in the medial bicipital sulcus
72
Which nerve of the medial cord doesn't give off any branches in the arm?
Ulnar nerve
73
How does the ulnar nerve cross the elbow?
Posterior side of the medial epicondyle in the sulcus of the ulnar nerve
74
Where is the ulnar nerve easily palpated?
In the sulcus for the ulnar nerve | Funny Bone
75
Where does the ulnar nerve travel in the forearm?
Between two heads of flexor carpi ulnaris
76
What muscles does the ulnar nerve supply?
Flexor carpi ulnaris | Flexor digitorum profundus
77
What are the two sensory branches of the ulnar nerve?
Dorsal branch of ulnar nerve | Palmar branch of ulnar nerve
78
What ulnar branch supplies the skin on the ulnar side of posterior hand?
Dorsal branch, ulnar nerve
79
What branch of the ulnar nerve supplies the skin over the hypothenar eminence?
Palmar branch, ulnar nerve
80
How does the ulnar nerve travel to the wrist?
Travels deep to flexor carpi ulnaris to wrist, superficial to the flexor tinaculum, divides into two branches
81
What are the two branches of the ulnar nerve in the hand?
Superficial | Deep
82
What does the superficial branch of the ulnar nerve divide into?
3 terminal branches: proper palmar branches
83
What do the proper palmar branches supply?
Palmar aspect little finger, medial half of the ring finger
84
What does the brachial plexus supply?
Upper extremities

PNS #3 (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions