L10_The Axilla (2) Flashcards
Tell me about the Supraclavicular Branches: Long Thoracic Nerve
- Runs longitudinally along the lateral sides of the thoracic wall (right on top of the serratus anterior)
- Branches off from the roots of the brachial plexus (C5-C7)
- Provides innervation to the serratus anterior muscle Also: injury at the long thoracic nerve affects the patients ability to protract the scapula resulting in scapular winging or hyper-retraction of the scapula (C5, C6, C7- fly to heaven)
Tell me about the Supraclavicular Branches: Suprascapular Nerve
- Branches off from the superior trunk of the brachial plexus (C4-C6)
- Provides innervation to the supraspinatus and infraspinatus muscle
It travels in the transverse ligaments of the scapula and joins with the dorsal scapular nerve
Tell me about the Supraclavicular Branches: Dorsal Scapular nerve
- Branches off from the roots of Brachial Plexus (C4-C5)
- Travels with dorsal scapular artery
- Provides innervation to Levator scapulae, Rhomboid major and minor
Tell me about the Supraclavicular Branches: Nerve to subclavius
- Branches off from the superior trunk of brachial plexus (C5-C6)
- Provides innervation to subclavius
Tell me about the Infraclavicular Branches: Medial and Lateral Pectoral nerves
Medial nerves (C8-T1):
- provides innervation to the pectoralis major and minor
Lateral nerves (C5-C7):
- provides innervation to the pectoralis major
Clavicular head of pect.major (C5-C6)
Sternal head of pect.major (C7-T1)
Tell me about the Infraclavicular branches: Upper and Lower Subscapular nerves
- C5-C6
- Provide innervation to the subscapularis muscle (lower and upper) and to the Teres major muscle (lower)
- They originate from the posterior cord
Tell me about the Infraclavicular Branches: Thoracodorsal nerve
- C6-C8
- Provides motor innervation to latissimus dorsi
- Branch from the posterior cord of the brachial plexus
Tell me about the Infraclavicular (terminal) branches: musculocutaneous nerve
- C5-C7
- the continuation of the lateral cord and the superior trunk
- provides motor and sensory innervation to anterior compartment of the arm
- Pierces coracobrachialis muscle
Tell me about the Infraclavicular (terminal) branches: ulnar nerve
- C7-T1
- Continuation of the medial cord and the inferior trunk
- Travels down medial side of the arm posterior to the medial epicondyle
- Provides motor innervation to anterior forearm and hand
Tell me about the Infraclavicular (terminal) branches: Median nerve
- C6-T1
- Travels down mid-line of the arm
- Provides motor innervation to anterior compartment of the forearm and hand
- The median nerve is composed of the lateral root (coming from the lateral cord) and the medial root (coming from the medial cord)
Tell me about the Infraclavicular (terminal) branches: Axillary nerve
- C5-C6
- Dips inferior to lateral scapular border and posterior to humerus
- Provides motor innervation to deltoid and teres minor muscles
- branch from the radial nerve
- Passes through the quadrangular space
Tell me about the Infraclavicular (terminal) branches: radial nerve
- C5-T1
- Travels posterior to humerus in radial groove and anterior to lateral epicondyle
- Provides innervation to the posterior compartment of arm and forearm
- Passes through the triangular interval
- The continuation of the posterior cord and middle trunk
What nerve gives cutaneous innervation to the section represented by the red arrow?
(anterior view)
Axillary nerve (C5-C6)
What nerve gives cutaneous innervation to the section represented by the red arrow?
(anterior view)
Radial nerve (C5 -T1)
What nerve gives cutaneous innervation to the section represented by the red arrow?
(anterior view)
Lateral antebrachial cutaneous nerve
(terminal branch of musculocutaneous nerve)
What nerve gives cutaneous innervation to the section represented by the red arrow?
(anterior view)
Median nerve (C6-T1)
(lateral wrist, lateral 3.5 digits)
What nerve gives cutaneous innervation to the section represented by the red arrow?
(anterior view)
Ulnar nerve (C7-T1)
(medial wrist, medial 1.5 digits)
What nerve gives cutaneous innervation to the section represented by the red arrow?
(anterior view)
Medial antebrachial cutaneous nerve (C8-T1)
(branch from medial cord)
What nerve gives cutaneous innervation to the section represented by the red arrow?
(anterior view)
Medial brachial cutaneous nerve (T1)
(branch from medial cord)
What nerve gives cutaneous innervation to the section represented by the red arrow?
(posterior view)
Medial brachial cutaneous nerve (T1)
(branch from the medial cord)
What nerve gives cutaneous innervation to the section represented by the red arrow?
(posterior view)
Medial antebrachial cutaneous nerve (C8-T1)
(branch from medial cord)
What nerve gives cutaneous innervation to the section represented by the red arrow?
(posterior view)
Ulnar nerve (C7-T1)
(posteromedial hand)
What nerve gives cutaneous innervation to the section represented by the red arrow?
(posterior view)
Median nerve (C6-T1)
(tips of digits 2,3,4)
What nerve gives cutaneous innervation to the section represented by the red arrow?
(posterior view)
Lateral antebrachial cutaneous nerve
(terminal branch of musculocutaneous nerve)
What nerve gives cutaneous innervation to the section represented in red?
(posterior view)
Radial nerve (C5-T1)
(most of posterior arm, forearm and hand)
What nerve gives cutaneous innervation to the section represented by the red arrow?
(posterior view)
Axillary nerve (C5-C6)
Study the dermatome of the upper limb
Tell me the 3 landmarks
C6- Thumb
C7- Peace sign
C8- Ring finger and pinky
Tell me the 5 myotomes of the upper limb so far
Name the integrity of the brachial plexus
