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23 Cards in this Set
- Front
- Back
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What are the most superficial muscles of the shoulder?
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trapezius and deltoid
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What is the only action the trapezius does not do?
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Won't protract the shoulders
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What are the attachments of the trapezius?
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attach 1- nuchal ligament, cervical and thoracic spnous process
attach 2- lateral clavicle, acromion and spine of scapula |
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What is the trapezius innervated by?
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CN XI
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What are the attachments of the deltoids?
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attach 1- lateral clavicle, acromion, and spine of scapula
attach 2- deltoid tuberosity of humerus |
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What innervates the deltoid?
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the axillary nerve
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What does the levator scapulae attach to?
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attach 1- transverse processes of atlas and axis
attach 2- superior angle of scapula |
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What are the rhomboid muscle attachments?
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attach 1- attach medially to the vertebral column
attach 2- medial border of the scapula |
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What are the attachments of the supraspinatus?
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Attach 1- supraspinous fossa of the scapula, deep fascia
attach 2- the superior facet of the greater tubercle |
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What is the main action of the supraspinatus?
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initiates abduction of the arm
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what are the attachments of the infraspinatus?
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attach 1- infraspinous fossa and deep fascia
attach 2- middle facet of greater tubercle |
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what is the main action of the infraspinatus?
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laterally rotates the humerus
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What are the attachments of the teres major?
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attach 1- posterior surface of inferior angle of scapula (oval area)
attach 2- anterior proximal humeral shaf |
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what are the main actions of the teres major?
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medial rotation and extension of humerus
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What are the attachmentsof the teres minor?
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attach 1- Lateral border of scapula
attach 20 inferior facet of greater tubercle |
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what are the attachments of the triceps brachii?
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attach 1- long head- below glenoid fossa-lateral and medial heads-lateral humeral shaft
attach 2- olecranon process of ulna |
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What are the main actions of the triceps?
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extension of forearm at ELBow, adductor and extensor of arm at GH joint
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What are the attachments of the subscapularis?
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attach 1- subscapular fossa
attach 2- lesser tubercle |
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What are the muscles of the anterior shoulder?
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pectoralis group- major.minor
brachial group- coracobrachialis, biceps brachii, brachialis |
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what are the muscles that move the scapula?
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serratus anterior
trapezius levator scapulae rhomboids |
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What are the muscles of the posterior shoulder?
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latissumus dorsi
deltoid teres major rotator cuff muscles triceps brachi |
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what are the rotator cuff muscles?
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suprasipnatus
infraspinatus teres minor subscapularis |
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Which head of the biceps brachii is more lateral?
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Long head
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