Osteology & Arthrology
How many true ribs are there?
7
What muscle is innervated by the long thoracic nerve?
Serratus anterior
What are the boundaries of the deltopectoral triangle?
Superior- clavicle
Medial- pec major
Lateral- deltoid
What nerve roots make up the brachial plexus?
C5, C6, C7, C8, T1
What muscles attach to the intertubercular groove?
Pectoralis major
Latissimus dorsi
Teres major
What movements can occur at the SC joint?
Elevation
Depression
Protraction
Retraction
Upward rotation
Downward rotation
What muscles do scapular upward rotation?
Serratus anterior
What are the contents of the deltopectoral triangle?
Cephalic vein
Deltoid branch of the thoracoacromial trunk
What are the branches off of the posterior cord?
Upper subscapular nerve
Lower subscapular nerve
Thoracodorsal nerve
Name the muscles of the rotator cuff
Supraspinatus
Infraspinatus
Teres minor
Subscapularis
What 2 ligaments make up the coracoclavicular ligament of the AC joint?
Conoid ligament
Trapezoid ligament
What muscles do scapular downward rotation?
Levator scapulae
Rhomboid major and minor
Pectoralis minor
What are the anterior and posterior boundaries of the axilla?
Anterior- pec major, pec minor
Posterior- scapula, subscapularis, teres major, latissimus dorsi
What artery and nerve typically run together towards the serratus anterior?
Lateral thoracic artery and long thoracic nerve
What travels over and under the superior transverse scapular ligament?
Over - suprascapular artery and vein
Under - suprascapular nerve
What ligament of the glenohumeral joint lies outside of the joint capsule?
Coracoacromial arch/ligament
What muscles attach to the clavicle?
Trapezius
Deltoid
Pectoralis major
Subclavius
What are the medial and lateral boundaries of the axilla?
Medial- thoracic wall, serratus anterior
Lateral- intertubercular groove of the humerus
What branch of the axillary artery runs with the cephalic vein through the deltopectoral triangle?
Deltoid branch of the thoracoacromial trunk
What are the contents of the quadrangular space?
Posterior circumflex humeral artery
Axillary nerve
What important structure would be at risk of injury if the 1st rib is fractured?
Brachial plexus
What muscles attach to the medial border of the scapula?
Levator scapulae
Rhomboid major and minor
Serratus anterior
What are the contents of the axilla?
Lymph nodes
Axillary artery & its branches
Axillary vein
Brachial plexus
Name the branches of the axillary artery (in order)
Superior Thoracic, Thoracoacromial (clavicular, acromial, deltoid, pectoral), Lateral Thoracic, Subscapular (circumflex scapular, thoracodorsal), Anterior circumflex humeral, posterior circumflex humeral
What is the only muscle of the upper limb not supplied by the brachial plexus?
Trapezius