- Spine of scapula - Acromion - Lateral 1/3 of clavicle

- Medial portion of superior nuchal line of occiput - External occipital protuberance - Spinous process of C7 - T12 - Ligamentum Nuchae

- Spine of scapula - Acromion - Lateral 1/3 of clavicle

Shoulder/Arm Flashcards by Arianna Hogan

Deltoid actions

All fibers:
- abduction of G/H joint
Anterior fibers:
- flexion of G/H joint
- Medial rotation of G/H joint
- Horizontal adduction of G/H joint
Posterior fibers:
- lateral rotation
- Extension of G/H joint
- Horizontal adduction of G/H joint

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Deltoid origin

Spine of scapula
Acromion
Lateral 1/3 of clavicle

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Deltoid insertion

Deltoid tuberosity

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Trapezius actions

Upper fibers:
Bilat: extend cranium
Unilat: rotate cranium to opposite side
lateral flex the cranium to same side
elevate scapula
upward rotation of scapula
Middle fibers: adduction/retraction of scapula at S/T joint
Stabilization of scapula
Lower fibers: depress scapula
upwardly rotate scapula

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Trapezius origin

Medial portion of superior nuchal line of occiput
External occipital protuberance
Spinous process of C7 - T12
Ligamentum Nuchae

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Trapezius

Spine of scapula
Acromion
Lateral 1/3 of clavicle

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Latissimus Dorsi actions

Extension of G/H joint
Medial rotation of G/H joint
Adduction of G/H joint

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Latissimus Dorsi origins

Spinous process of T6-T12
-Inferior angle of scapula
-Last 3-4 ribs
Thoracolumbar Fascia
Posterior Iliac Crest

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Latissimus Dorsi insertion

Intertubercular groove of humerus

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Teres Major actions

Extension of G/H joint
Adduction of G/H joint
Medial Rotation of G/H joint

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Teres Major origin

Inferior angle of scapula
Inferior 1/3 of the lateral border of scapula

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Teres Major insertion

Crest of the lesser tubercle of humerus

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Infraspinous action

Laterally rotate G/H joint
Adduct the G/H joint
Stabilize head of humerus in glenoid cavity

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Infraspinous origin

Infraspinous fossa of the scapula

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Infraspinous insertion

Greater tubercle of the humerus

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Supraspinatus actions

Abduct the G/H joint
Stabilize head of humerus in glenoid cavity

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Supraspinatus origin

Supraspinous fossa of the scapula

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Supraspinatus insertion

Greater tubercle of humerus

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Teres Minor actions

Laterally rotate the G/H joint
Adduct the G/H joint
Stabilize the head of the humerus in glenoid cavity

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Teres Minor origin

Upper 2/3 of the lat border of scapula

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Teres Minor insertion

Greater tubercle of the humerus

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Subscapularis actions

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Medially rotate the G/H joint
Stabilize the head of the humerus in glenoid cavity

Subscapularis origin

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Subscapular fossa of the scapula

Subscapularis insertion

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Lesser tubercle of the humerus

Levator Scapula actions

Unilat: elevate scapula at S/T joint downwardly rotate scapula at S/T joint Laterally flex head/neck to same side Rotate head/neck to same side Bilat: extend the head/neck

Levator Scapula origin

Transverse process of C1-C4

Levator Scapula

Medial border of scapula b/w superior angle of scapula and sup. portion of the spine of the scapula

Rhomboid Major actions

Adduct the scapula at the S/T joint Elevate the scapula at S/T joint Downwardly rotate the scapula at S/T joint Retract the scapula

Rhomboid Major origin

Spinous process of T2-T5

Rhomboid Major insertion

Medial border of the scapula b/w inferior angle and spine of scapula

Rhomboid Minor actions

Adduct scapula at S/T joint Elevate scapula at S/T joint Downwardly rotate scapula at S/T joint Retract the scapula

Rhomboid Minor origin

Spinous process of C7-T1

Rhomboid Minor insertion

Upper portion of medial border of scapula b/w sup. angle and spine of scapula

Serratus Anterior actions

With origin fixed: Abduct the scapula at S/T Upwardly rotate the scapula at S/T joint Depress the scapula at S/T joint Hold the medial border of scapula against ribs W/ scapula fixed: elevate ribs on inhalation

Serratus Anterior origin

External surface of ribs 1-8 (or 9)

Serratus anterior insertion

Ant. portion of medial border of scapula

Pectoralis Major actions

All Fibers: Adduct G/H joint Medially rotate G/H joint Assist to elevate ribs during forced inhalation Upper fibers: Flex G/H joint Horizontally adduct G/H joint Lower Fibers: Extend the G/H joint

Pectoralis Major origin

Medial half of clavicle and sternum Cartilage of ribs 1-6

Pectoralis Major insertion

Crest of greater tubercle of humerus

Pectoralis Minor actions

Downwardly rotate scapula at S/T joint Depress scapula at S/T joint Abduct the scapula Elevate the ribs during forced inhalation

Pectoralis Minor origin

Ribs 3-5

Pectoralis Minor insertion

Medial surface of coracoid process of scapula

Subclavius actions

Depress the clavicle and draw in anteriorly Elevate the first rib and assist during inhalation Stabilize the S/C joint

Subclavius origin

first rib and cartilage

Subclavius insertion

Inferior surface of the medial 1/3 portion of clavicle

Coracobrachialis actions

Flex the G/H joint Adduct the G/H joint

Coracobrachialis origin

Coracoid process of scapula

Coracobrachialis insertion

Medial surface of the mid-humeral shaft

Biceps Brachii actions

Flex the elbow (Humeroulnar joint) Supinate the forearm (Radioulnar joint) Flex the G/H joint

Biceps Brachii origin

Short Head: Coracoid process of scapula Long Head: Supraglenoid tubercle of scap.

Biceps Brachii insertion

Radial tuberosity and aponeurosis of the biceps brachii

Triceps Brachii actions

Extend the elbow (H/U joint) Extend the shoulder (G/H joint) Adduct the G/H joint

Triceps Brachii origins

Long head: infraglenoid tubercle of scapula Lat head: post. surface of proximal half of humerus Medial head: post. surface of distal end of humerus

Triceps Brachii insertion

Olecranon process of ulna

Shoulder/Arm Flashcards

OIA (54 cards)