Muscles of the Upper Limb - Axilla and Brachial Plexus

Question 1

Name nerves A, B and C

Answer 1

A - Upper subscapular nerve

B - Lower subscapular nerve

C - Long thoracic nerve

Question 2

Name muscle A

Answer 2

A - Long head of triceps brachii

Question 3

What is the innervation of muscle A?

Answer 3

Upper and lower subscapular nerves (C5, C6 and C7)

A - Subscapularis

Question 4

What is the innervation of muscle A?

Answer 4

Nerve to subclavius (C5 and C6)

A - Subclavius

Question 5

What is the function of muscle A?

Answer 5

1. Pulls tip of shoulder inferiorly
2. Pulls clavicle medially

A - Subclavius

Question 6

Name nerves A to E

Answer 6

A - Musculocutaneous nerve

B - Axillary nerve

C - Radial nerve

D - Median nerve

E - Ulnar nerve

Question 7

Name muscle A

Answer 7

A - Pectoralis major

Question 8

Name muscle A

Answer 8

A - Triceps brachii

Question 9

What is the function of muscle A?

Answer 9

1. Medial rotation of arm at glenohumeral joint

A - Subscapularis

Question 10

What is the function of muscle A?

Answer 10

1. Pulls tip of shoulder inferiorly
2. Protraction of scapula

A - Pectoralis minor

Question 11

Name nerve A and spinal nerves B, C and D from which it is derived

Answer 11

A - Long thoracic nerve

B - C5

C - C6

D - C7

Question 12

What is the innervation of muscle A?

Answer 12

Medial and lateral pectoral nerves

A - Pectoralis major

Question 13

Name the cords of the brachial plexus A, B and C

Answer 13

A - Lateral cord

B - Posterior cord

C - Medial cord

Question 14

Name vessel A

Answer 14

A - Axillary artery

Question 15

What is the innervation of muscle A?

Answer 15

Medial pectoral nerve (C5-T1)

A - Pectoralis minor

Question 16

Name structure A

Answer 16

A - Posterior cord (of brachial plexus)

Question 17

Name nerves A to D

Answer 17

A - Lateral pectoral nerve

B - Suprascapular nerve

C - Dorsal scapular nerve

D - Nerve to suclavius

Question 18

What is the innervation of muscle A?

Answer 18

Radial nerve (C6, C7, C8)

A - Long head of triceps brachii

Question 19

Name muscle A

Answer 19

A - Teres major

Question 20

Name muscle A

Answer 20

A - Latissiumus dorsi

Question 21

Name nerve A

Answer 21

A - Radial nerve

Question 22

What is the function of muscle A?

Answer 22

1. Adduction of arm at glenohumeral joint
2. Medial rotation of arm at glenohumeral joint
3. Extension of arm at glenohumeral joint

A - Latissimus dorsi

Question 23

Name nerve A

Answer 23

A - Long thoracic nerve

Question 24

Name muscle A

Answer 24

A - Serratus anterior

Question 25

Name muscle A

Answer 25

A - Subscapularis

Question 26

What is the innervation of muscle A?

Answer 26

Lower subscapular nerve (C5, C6 and C7)

A - Teres major

Question 27

What is the function of muscle A?

Answer 27

1. Extension of forearm at elbow joint
2. Adduction (accessory) of arm at glenohumeral joint
3. Extension (accessory) of arm at glenohumeral joint

A - Long head of triceps brachii

Question 28

What is the function of muscle A?

Answer 28

1. Flexion at glenohumeral joint
2. Adduction at glenohumeral joint
3. Medial rotation at glenohumeral joint
4. Flexion of extended arm (clavicular head)
5. Extension of flexed arm (sternocostal head)

A - Pectoralis major

Question 29

Name the sections of the brachial plexus A to E

Answer 29

A - Nerves

B - Cords

C - Divisions

D - Trunks

E - Roots

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Question 30

What is the innervation of muscle A?

Answer 30

Long thoracic nerve (C5, C6 and C7)

A - Serratus anterior

Question 31

What is the function of muscle A?

Answer 31

1. Protraction of scapula
2. Rotation of scapula
3. Opposes medial scapular border and inferior angle to thoracic wall

A - Serratus anterior

Question 32

Name nerves A to D

Answer 32

A - Medial pectoral nerve

B - Medial cutaneous nerve of arm

C - Medial cutaneous nerve of forearm

D - Thoracodorsal nerve

Question 33

Name muscle A

Answer 33

A - Serratus anterior

Question 34

Name muscle A

Answer 34

A - Subclavius

Question 35

What is the innervation of muscle A?

Answer 35

Thoracodorsal nerve (C6, C7 and C8)

A - Latissimus dorsi

Question 36

What is the function of muscle A?

Answer 36

1. Medial rotation of arm at glenohumeral joint
2. Extension of arm at glenohumeral joint

A - Teres major