Axilla Flashcards
Serratus Anterior
proximal - Ribs 1-8 (lateral portions)
distal - medial border of scapula
Subscapularis
proximal - Subscapular fossa
distal - lesser tubercle of humerus
Coracobrachialis
proximal - Coracoid process of scapula
distal - medial humeral shaft
Biceps brachii
Proximal for long head: suparglenoid tubercle of scapula
Proximal for Short head: Coracoid oricess of scapula
Distal: Radial tuberosity and anterbrachial fascia
Brachialis
proximal: anterior humerus
distal: ulnar tuberosity
Actions of serratus anterior
Protracts scapula and rotates glenoid fossa upwards
Actions of Subscapularis
Medially rotates and adducts arm
Actions of Coracobrachialis
Flexes and adducts arm
Actions of Biceps brachii
Flexes arm
Actions of Brachialis
Flexes forearm
Innervations of Serratus Anterior
Long thoracic nerve
Innervations of Subscapularis
Upper and lower subscapular nerve
Innervations of Coracobrachialis
Musculocutaneous nerve
Innervations of Biceps brachii
Musculocutaneous nerve
Innervations of Brachialis
Musculocutaneous nerve
What are the chords of the Brachial Plexus
- Lateral Cord (C1 - C7)
- Medial Cord (C8 - T1)
- Posterior Cord (C5 - T1)
- Thoracacodorsal nerve
- Upper subscapular
- Lower subscapular
What are the terminal branches of the Brachial Plexus?
- *M**usculcutaneous (C5-C7)
- *A**xillary nerve (C5, C6)
- *R**adial nerve (C5-T1)
- *M**edian nerve (C6-T1)
- *U**lnar nerve (C8,T1)
What never travels superficially on the Serratous Anterior from C5-C7?
Long thoracic nerve
What is in the 3rd part of the axillary artery?
1. Anterior humeral circumflex artery
2. Posterior humeral circumflex artery
3. Subscapular artery
- Thoracodorsal and circumflex scapular arteries
