Anatomy: Brachial Plexus

Question 1

Anatomy: Brachial Plexus

the 5 nerve roots give us 2 nerves which innervate

Answer 1

• Dorsal scapula nerve innervates: rhomboid major and minor, levator scapula
• Long thoracic nerve innervates: serratus anterior

Question 2

Anatomy: Brachial Plexus

the superior trunk of the brachial plexus gives two nerves which innervate….

Answer 2

• Suprascapular: supra/infraspinatus
• Nerve to subclavius

Question 3

Anatomy: Brachial Plexus

Lateral cord gives which nerve

Answer 3

Lateral pectoral nerve (C5-C7)
Innervates pectoralis major

Question 4

Anatomy: Brachial Plexus

medial cord give us which nerves

Answer 4

• medial pectoral nerve: pec major/minor
• medial brachial/antebrachial cutaneous nerve

Question 5

Anatomy: Brachial Plexus

posterior cord gives us which nerves?
innervate which muscles?

Answer 5

• Upper subscapular: subscapularis
• Middle subscapular or thoracodorsal: latissimus dorsi
• Lowe subscapular: subscapularis and teres major

Question 6

Anatomy: Brachial Plexus

which mm are innervated by the posterior cord of the brachial plexus?

Answer 6

subscapularis, latissimus dorsi, teres major