Nerves

Question 1

Spinal accessory nerve

Answer 1

Head/Neck

innervates
-trapezius

found

• deep to trapezius
• with superior branch transverse cervical artery

Question 2

Thoracodorsal Nerve

Answer 2

Posterior cord of BP (C5-T1)

innervates
-latissimus dorsi

found
- with thoracodorsal artery

Question 3

Dorsal Scapular Nerve

Answer 3

Root of BP (C5)

innervates

• levator scapulae
• rhomboids

found

• deep to trapezius and levator scapulae
• with deep branch transverse cervical artery

Question 4

Axillary Nerve

Answer 4

Posterior cord of BP (C5-T1)

innervates

• teres minor
• deltoid

found

• with posterior circumflex humeral artery
• finishes in deltoid
• lateral to radial nerve
• pierces muscle quickly after branching

Question 5

Lower subscapular nerve

Answer 5

Posterior cord of BP (C5-T1)

innervates

• subscapularis
• trees major

found
- with subscapular artery

Question 6

Upper subscapular nerve

Answer 6

Posterior cord of BP (C5-T1)

innervates
- subscapularis

Question 7

Suprascapular Nerve

Answer 7

Upper trunk of BP (C5-6)

innervates

• Supraspinatis
• Infraspinatis

found
- with suprascapular artery

Question 8

Anterior rami

Answer 8

of spinal nerves

innervate

• serratus anterior / posterior
• intertransverserii

Question 9

Posterior Rami

Answer 9

Innervate

- Deep back muscles: erector spinae, transversospinalis, segmental muscle group

Question 10

Medial pectoral nerve

Answer 10

medial cord of BP (C8-T1)

innervates
- pectorals major and minor

pierces through pec minor to innervate pec major

Question 11

Lateral pectoral nerve

Answer 11

lateral cord of BP (C5-7)

innervates
- pectoralis major

Question 12

Nerve to subclavius

Answer 12

Upper trunk of BP (C5-6)

Innervates
- subclavius

Question 13

Long thoracic nerve

Answer 13

roots of bp (c5-7)

innervates
- serratus anterior

Question 14

Musculocutaneuos Nerve

Answer 14

lateral cord of Bp (c5-7)

Innervates
- upper arm flexors

Found

• most lateral from cords
• first to pierce muscles
• found deep to biceps brachii in cubitle fossa
• ends cutaneously

Question 15

Radial nerve

Answer 15

Posterior cord of bp (c5-t1)

Innervates
- extensors of arm and forearm

Found

• radial tuberocity of humerus
• deep to brachioradialis in cubital fossa
• deep branch pierces supinator, becomes posterior interosseus nerve
• P.I. nerve found with P.I. artery through supinator, deep to extensor digitorum

Question 16

Median Nerve

Answer 16

Lateral and medial cords of BP (c5-t1)

Innervates

• flexors of the arm
• lateral 2 lumbricals
• muscles of thenar eminence (recurrent branch)

Found

• anterior to humerus
• deep to flexor retinaculum
• branches into anterior interosseus nerve (deep distal of ant. forearm)

Question 17

Ulnar nerve

Answer 17

Medial cord of BP (C8-T1)

innervates

• Hand
• flexor carpi ulnaris
• 1/2 of flexor digitorum profundus

found

• posterior to humerus
• deep to flexor carpi ulnaris
• above flexor digitorum profundus
• above flexor retinaculum

Question 18

Medial cutaneous nerve

Answer 18

2 branches off the medial cord c8-t1

innervates
- skin of the arm

found
- most medial branch of the cords