1Where are the roots of the brachial plexus located?
Between the Anterior and Middle Scalene muscles
2Where are the trunks of the brachial plexus located?
Lateral to the scalenes and proximal to the clavicle
3Where are the divisions of the brachial plexus located?
Posterior to the clavicle
4Where are the cords of the brachial plexus named in relation to?
The axillary artery
5What is the root origin of the dorsal scapular nerve?
\$C5\$
6What muscles does the dorsal scapular nerve innervate?
Levator scapulae and rhomboids
7What artery does the dorsal scapular nerve travel with?
Dorsal scapular artery
8What is the root origin of the long thoracic nerve?
\$C5-C7\$
9What muscle does the long thoracic nerve innervate?
Serratus anterior
10What artery does the long thoracic nerve travel with?
Lateral thoracic artery
11What is the root origin of the suprascapular nerve?
\$C5-C6\$
12What muscles does the suprascapular nerve innervate?
Supraspinatus and infraspinatus
13What artery does the suprascapular nerve travel with?
Suprascapular artery
14Which ligament does the suprascapular nerve pass deep to at the suprascapular notch?
Superior transverse scapular ligament
15What is the root origin of the nerve to subclavius?
\$C5-C6\$
16What muscle does the nerve to subclavius innervate?
Subclavius
17What cord gives rise to the lateral pectoral nerve?
Lateral cord
18What is the root origin of the lateral pectoral nerve?
\$C5-C7\$
19What muscle does the lateral pectoral nerve innervate?
Pectoralis major
20What cord gives rise to the medial pectoral nerve?
Medial cord
21What is the root origin of the medial pectoral nerve?
\$C8-T1\$
22What muscles does the medial pectoral nerve innervate?
Pectoralis major and pectoralis minor
23What cord gives rise to the upper and lower subscapular nerves?
Posterior cord
24What is the root origin of the upper and lower subscapular nerves?
\$C5-C6\$
25What muscle does the upper subscapular nerve innervate?
Subscapularis
26What muscles does the lower subscapular nerve innervate?
Subscapularis and teres major
27What cord gives rise to the thoracodorsal nerve?
Posterior cord
28What is the root origin of the thoracodorsal nerve?
\$C6-C8\$
29What muscle does the thoracodorsal nerve innervate?
Latissimus dorsi
30What artery does the thoracodorsal nerve travel with?
Thoracodorsal artery
31What cord gives rise to the axillary nerve?
Posterior cord
32What is the root origin of the axillary nerve?
\$C5-C6\$
33What muscles does the axillary nerve innervate?
Deltoid and teres minor
34What sensory innervation does the axillary nerve provide?
Cutaneous to the lateral shoulder
35What is the terminal sensory branch of the axillary nerve called?
Superior lateral brachial cutaneous nerve
36What cord gives rise to the radial nerve?
Posterior cord
37What is the root origin of the radial nerve?
\$C5-8 (T1)\$
38What muscles does the radial nerve innervate in the arm?
Triceps brachii and anconeus
39What is the sensory innervation of the radial nerve?
Posterior arm, posterior forearm, and posterolateral hand/digits
40What cord gives rise to the musculocutaneous nerve?
Lateral cord
41What is the root origin of the musculocutaneous nerve?
\$C5-C7\$
42What muscles does the musculocutaneous nerve innervate?
Coracobrachialis, biceps brachii, and brachialis
43What is the sensory innervation of the musculocutaneous nerve?
Lateral antebrachial cutaneous nerve
44What cord gives rise to the ulnar nerve?
Medial cord
45What is the root origin of the ulnar nerve?
\$(C7) C8-T1\$
46What muscles in the forearm does the ulnar nerve innervate?
Flexor carpi ulnaris and medial part of flexor digitorum profundus
47What is the sensory innervation of the ulnar nerve?
Medial side of the hand, 5th digit, and medial half of the 4th digit
48What cords contribute to the median nerve?
Lateral and medial cords
49What is the root origin of the median nerve?
\$C5-T1\$
50What is the sensory innervation of the median nerve?
Thenar eminence, lateral palm, 1st, 2nd, 3rd digits, and lateral half of 4th digit
51What is the root origin of the medial brachial cutaneous nerve?
\$T1\$
52What is the sensory innervation of the medial brachial cutaneous nerve?
Cutaneous to the medial arm
53What is the root origin of the medial antebrachial cutaneous nerve?
\$C8-T1\$
54What is the sensory innervation of the medial antebrachial cutaneous nerve?
Cutaneous to the medial forearm
55Which nerve plexus arises from the cervical enlargement of the spinal cord?
- Brachial plexus
- Cervical plexus
- Lumbar plexus
- Sacral plexus
56Which nerve passes through the suprascapular notch deep to the superior transverse scapular ligament?
- Suprascapular nerve
- Long thoracic nerve
- Dorsal scapular nerve
- Axillary nerve
57Which muscle is innervated by the long thoracic nerve?
- Serratus anterior
- Latissimus dorsi
- Teres major
- Subscapularis