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Muscle? Action?
External Oblique
Action: Compresses abdominal viscera. Bends vertebral columjn laterally. Flexes Vertebral Column
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 Muscle? Action?
Internal Oblique
Action: Compresses abdominal viscera. Bends vertebral columjn laterally. Flexes Vertebral Column
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 Muscle? Origin Insertion & Action?
Rectus Abdominis
Origin: Pubic crest, symphysis pubis
Insertion: Cartilages of ribs 5-7, xiphoid process
Action: flexes vertebral column
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 Muscle? Origin, Insertion, Action?
Transversus Abdominis
Origin: Inguinal Ligament, Iliac crest, Thoracolumbar fascia, Lower 6 ribs
Insertion: Linea Alba
Action: Constrics abdominal viscera
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Muscle? Action?
Diaphragm
Action: Respiration
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 Muscle? Origin Insertion and Action
trapezius
Origin: Occipital bone, ligamentum nuchae, spines of c-7 and all thoracic vertebrae
Insertion: Clavicle, scapular spine, acromion
Action: draws head back, elevate3s depresses,m rotates, adducts & stabalizes scapula
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 muscle? O, I & A?
Rhomboids
Origin: spinous process c7- t5
Insertion: medial scapular border
Action: adducts scapula
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 Muscle? OIA?
Levator Scapulae
O: transverse process of first 4 cervical vertebrae
I: Medial border of scapula above spine
A: Elevates scapula, when scapula is fixed it extends and bends neck laterally
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 Muscle? OIA?
Pectoris Minor
- O: Ribs 3 4 5
- I: Coracoid process of scapula
- A: draws scapula forward/downward depressing shoulder
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 Muscle? OIA?
Infraspinatus
- O: Infraspinous fossa of scapula
- I: Greater tubercle of humerous
- A: lateral rotation of humerous
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 Muscle? OIA?
Supraspinatus
- O:supraspinatus fossa of scapula
- I:greater tubercle of humerous
- A:abducts humerous
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 Muscle? OIA?
Deltoid
- O:Clavicle acromion and scapular spine
- I: deltoid tuberosity of humerous
- A: abducts humerous, flexes and rotates humerous medially. extends and rotates humerous laterally.
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Muscle and OIA
Pectoralis major
O: Clavicle sternum and cartilages of ribs 2-6, aponeurosis of external oblique
I: intertubercular groove of humerus
A: adducts flexes and medially rotates humerous.
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 Muscle? OIA?
Latissimus dorsi
- O: thoracolumbar fascia crest of ilium
- I: intertubercle groove of humerus
- A: edxtends, adducts, & medially rotates arm
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Muscle? OIA?
Teres Major
- O: inferior angle of scapula
- I:lesser tubercle of humerus
- A: adducts, extends, medially rotates arm
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 Muscle? OIA?
Biceps Brachii
- O: short head-coracoidn process of scapula
- long head- superior margin on gledoid fossa
I: radial tuberosity
A: flexes forarm
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#4 oia
Brachialis
O: lower half of anterior surface of humerous
I: tuberosity and coronoid process of ulna
A: flexes forarm
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#5 OIA
brachioradialis
O: lateral supracondylar ridge of humerous
I: styloid process of radius
A: flexes forarm
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#11 OIA
triceps brachii
- O: long head- infraglenoid tuberosity of scapula
- lateral head-proximal shaft of humerous
- medial head- distal 2/3rds of humerous
I: olecranon process of ulna
A: extends forarm
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Muscle? OIA
Pronator teres
- O: humeral head-medial epicondyle of humerous
- ulnar head-coronoid process of ulna
I: middle shaft of radius
A: pronates hand
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muscle #9-OIA?
Flexor carpi ulnaris
O: medial epicondyle of humerous, medial margin of olecranon, posterior border of ulna
I: 5th metacrapal, carpal bones of wrist
A: flexes and adducts wrist, flexes forarm
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Muscle #8, OIA?
Flexor Carpi Radialis
- O: medial epicondyle of humerous
- I: transverse carpal ligament, palmar aponeurosis
- A: Flexes wrist and forarm
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Muscle #10 OIA?
Flexor Digitorum Superficialis
O: Medial epicondyle of humerous, Medial surface of ulna, Anterior border of radius
I: middle phalanges of 4 fingers
A: flexes fingers, hand and forarm.
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Muscle #18? OIA?
Palmaris Longus
O: Medial epicondyle of humerus
I: transverse carpal ligament, palmar aponeurosis
A: flexdes wrist and forarm
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