Term
Supraspinatus
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Definition
Supraspinatus
O: Supraspinous fossa
I: Greater tubercle of humerus
Action: ABD arm, assists deltoid
Nerve: Suprascapular n. |
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Term
Infraspinatus
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Definition
Infraspinatus
O: Infraspinous fossa
I: Greater tubercle of humerus
Action: Laterally rotates arm
Nerve: Suprascapular n. |
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Term
Teres Minor
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Definition
Teres Minor
O: Lateral scapula
I: Greater tubercle of humerus
Action: Laterally rotates humerus
Nerve: Axillary n. |
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Term
Subscapularis
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Definition
Subscapularis
O: Subscapular fossa
I: Lesser tubercle of humerus
Action: Medially rotates humerus
Nerve: Subscapular nn. |
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Term
Pectoralis Major
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Definition
Pectoralis Major
O: Clavicular head -- clavicle
Sternocostal head -- sternum, costal cartilage 1-6, aponeurosis of EAO
I: Intertubercular head of humerus
Action: Clavicular head -- ADD and medially rotates humerus
Sternocostal head -- FLEX humerus
Nerve: Lateral and medial pectoral nn. |
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Term
Pectoralis Minor
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Definition
Pectoralis Minor
O: 3rd-5th ribs
I: Coracoid process of scapula
Action: Stabilize and depress scapula, assist with deep inspiration
Nerve: Medial pectoral n. |
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Term
Subclavius
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Definition
Subclavius
O: Junction of 1st rib and costal cartilage
I: Middle inferior border of clavicle
Action: Stabilize and depress clavicle
Nerve: Subclavius n. |
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Term
Teres Major
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Definition
Teres Major
O: Inferior angle of the scapula
I: Intertubercular groove of humerus
Action: ADD and medially rotates arm
Nerve: Lower subscapular n. |
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Term
Deltoid
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Definition
Deltoid
O:Anterior - Clavicle
Middle - Acromion
Posterior - Spine of scapula
I: Deltoid tuberosity of humerus
Action: Anterior - FLEX and medially rotates arm
Middle - ABD arm
Posterior - EXT and laterally rotates arm
Nerve: Axillary n. |
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Term
Serratus Anterior
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Definition
Serratus Anterior
O: Lateral surface of ribs 1-8
I: Medial border of scapula
Action: Protracts and laterally rotates scapula, assists in respiration
Nerve: Long thoracic n. |
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