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Deltoid (clavicular part)
- Origin: Action:
- Lat. 1/3 of clavicle Flex, Int. Rot., Abd.
- Insertion: Humerus (deltoid tuberosity)
- Nerve:
- Axillary N. (C5,C6)
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Deltoid (Acromial part)
- O: Acromion
- I: Deltoid Tuberosity (Humerus)
- N: Axillary N. (C5-C6)
- A: Abduction
-
Deltoid (Spinal part)
- O: Scapular Spine
- I: Deltoid Tuberosity (Humerus)
- N: Axillary N. (C5-C6)
- A: Extension, external rotation, abduction
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Supraspinatus
- O: Scapula- Supraspinous Fossa
- I: Humerus- Greater Tuberosity
- N: Suprascapular N. (C4-C6)
- A: Abduction
-
Infraspinatus
- O: Scapula- Infraspinous fossa
- I: Humerus- Greater tuberosity
- N: Suprascapular N. (C4-C6)
- A: External Rotation
-
Teres Minor
- O: Scapula- Lateral border
- I: Humerus- Greater Tuberosity
- N: Axillary N. (C5,C6)
- A: External Rotation; weak adduction
-
Subscapularis
- O: Scapula- Subscapular fossa
- I: Humerus- lesser tuberosity
- N: Subscapular N. (C5, C6)
- A: Internal Rotation
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Pectoralis Major (Clavicular part)
- O: Clavicle (medial 1/2)
- I: Humerus (crest of greater tuberosity)
- N: Medial & Lateral pectoral nn. (C5-T1)
- A: adduction, internal rotation, flexion, assist w/ respiration
-
Pectoralis Major (Sternocostal part)
- O: sternum & costal cartilages 1-6
- I: Humerus (crest of greater tuberosity)
- N: Medial & Lateral pectoral nn. (C5-T1)
- A: Adduction, internal rotation, flexion, assist w/ respiration
-
Pectoralis Major (Abdominal part)
- O: Rectus sheath (anterior layer)
- I: Humerus (crest of greater tuberosity)
- N: Medial & Lateral pectoral nn. (C5-T1)
- A: Adduction, internal rotation
-
Coracobrachialis
- O: Scapula (Coracoid process)
- I: Humerus (in line w/ crest of lesser tuberosity)
- N: Musculocutaneous N. (C6, C7)
- A: Flexion, Adduction, Internal Rotation
-
Pectoralis Minor
- O: 3rd-5th ribs
- I: Coracoid Process
- N: Medial & Lateral pectoralis nn. (C6-T1)
- A: Draws scapula downward, rotates glenoid inferiorly, assists w/ respiration
-
Serratus Anterior (Superior part)
- O: 1st-9th ribs
- I: Medial border of scapula
- N: Long Thoracic N. (C5-C7)
- A: lowers the raised arm, draws scapula laterally forward, elevates ribs when shld. is fixed
-
Serratus Anterion (Intermediate part)
- O: 1st-9th ribs
- I: Medial border of scapula
- N: Long Thoracic N. (C5-C7)
- A: draws scapula laterally forward, elevates ribs when shld. is fixed
-
Serratus Anterior (Inferior part)
- O: 1st-9th ribs
- I: Medial border of scapula
- N: Long Thoracic N. (C5-C7)
- A: rotates scapula laterally, draws scapula laterally forward, elevates ribs when shld. is fixed
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Trapezius (Descending part/ upper)
- O: Occipital bone; spinous process (C1-C7)
- I: Clavicle (lateral 1/3)
- N: Accesory N. (CN X); cervical plexus (C3-C4)
- A: draws Scapula medially upward, rotates glenoid cavity superiorly, Tilts head to same side and rotates to the opposite side; steadies Scapula on Thorax
-
Trapezius (Transverse part/ middle)
- O: Aponeurosis @ T1-T4 spinous processes
- I: Acromion
- N: Acessory N. (CN X); cervical plexus (C3-C4)
- A: Draws Scapula medially; steadies Scapula on Thorax
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Trapezius (Ascending part/ lower)
- O: Spinous process of (T5-T12)
- I: Scapular spine
- N: Acessory N. (CN X), cervical plexus (C3-C4)
- A: Draws Scapula medially downward; steadies Scapula on Thorax
-
Levator Scapulae
- O: Transverse process of C1-C4
- I: Scapuls (superior angle)
- N: Dorsal Scapular N. (C4-C5)
- A: Draws Scapula medially upward while moving the inferior angle medially; inclines neck to same side
-
Rhomboid Minor
- O: Transverse process of C1-C4
- I: Scapula (Medial border above Scapula spine)
- N: Dorsal Scapular N. (C4-C5)
- A: Steadies Scapula; draws it medially upward
-
Rhomboid Major
- O: Spinous process of (T1-T4)
- I: medial border of Scapula (below spine)
- N: Dorsal scapular N.(C4-C5)
- A: steadies scapula; draws it medially upward
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