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38 Cards in this Set

  • Front
  • Back
SC joint ligaments
Anterior and Poster SC ligaments
interclavicular ligament
costoclavicular ligament
costoclavicular ligament
connects clavicle to rib #1
Sternoclavicular joint
Btw Clavicle and Manubrium of Sternum
Acromialclavicular joint
Btw Clavicle and Acromion of scapula
AC joint ligaments
Acromioclavicular ligament
coracoacromial ligament
coracoclavicular ligaments
2 Coracoclavicular ligaments
Trapezoid (lat) and Conoid (med) unite coracoid process and clavicle
1st degree AC injury
"sprain"
stretch or minor tear of AC ligament but still intact
2nd degree AC injury
"subluxation"
rupture of AC ligament
3rd degree AC injury
"dislocation" or shoulder separation
coracoclavicular ligaments torn; shoulder separates away from clavicle
Pectoralis Major origin
Clavicular and Sternocostal heads
Pectoralis Major insertion
bicipital groove of humerus
Pectoralis Major action
adduction and medial rotation of arm, flexion of arm at shoulder joint
Pectoralis Major nerves
medial and lateral pectoral nerves
pectoralis minor origin
ribs 3-5
pectoralis minor insertion
coracoid process of scapula
pectoralis minor action
stabilize scapula against thoracic wall; minor respiratory function
pectoralis minor innervation
medial pectoral nerve
Transitions of subclavian artery
after it passes rib #1 becomes axillary artery; after it passes teres major becomes brachial artery.
Axillary Artery function
provides vascular supply to pectoral girdle and shoulder regions
1st part of axillary artery
Before pectoralis minor; has one branch: superior thoracic artery
2nd part of axillary artery
Found beneath pec minor
2 branches: thoracoacromial trunk and lateral thoracic artery
3rd part of axillary artery
after pec minor
3 branches: subscapular and anterior and posterior humeral circumflex
Subscapular Artery
largest branch of axillary artery; supplies muscles around scapula, gives rise to thoracodorsal artery and scapular circumflex artery
Anterior and Posterior Humeral Circumflex arteries
help vascularize humerus and surrounding muscles. Posterior is larger and passes through quadrangular space.
6 branches of the axillary artery
superior thoracic artery
thoracoacromial artery
lateral thoracic artery
subscapular artery
anterior and posterior humeral circumflex arteries
5 regions of the brachial plexus
roots, trunks, divisions, cords, branches
5 Roots of Brachial Plexus
Formed by ventral rami of C5 - T1
3 Trunks of Brachial Plexus
C5 and C6 form superior trunk
C7 forms middle trunk
C8 and T1 form inferior trunk
2 divisions of Trunks of Brachial Plexus
Anterior - form nerves that innervate flexor muscles
Posterior - form nerves that innervate extensor muscles
Anterior Divisions in Brachial Plexus
form nerves that innervate flexor muscles
Posterior Divisions in Brachial Plexus
Form nerves that innervate extensor muscles
3 Cords of Brachial Plexus
Lateral
Medial
posterior
Lateral cord of Brachial Plexus
formed from anterior divisions of superior and middle trunks
Medial Cord of Brachial Plexus
formed from anterior division of inferior trunk
Posterior Cord of Brachial Plexus
formed from posterior divisions of all 3 trunks
Major branches of lateral cord of brachial plexus
Musculocutaneous and lateral root of median nerve
Major branches of posterior cord of brachial plexus
radial and axillary nerves
Major branches of medial cord of brachial plexus
ulnar nerve and medial root of median nerve