O: Lateral 3rd of clavicle
I: Deltoid tuberosity
A: Shoulder abduction, flexion, medial rotation, horizontal adduction
N: Axillary N.
What is anterior deltoid
100
O: Infraspinous fossa of scapula
I: Greater tubercle of humerus
A: Shoulder lateral rotation and horizontal abduction
N: Suprascapular N.
What is infraspinatous
100
O: Transverse processes of first four cervical vertebrae
I: Vertebral border of scapula, bet. superior angle and spine
A: Scapular elevation and downward rotation
N: 3rd and 4th cervical N and dorsal scapular N.
What is levator scapula
100
O: Anterior surface of ribs 3-5
I: Coracoid process of scapuls
A: Scapular depression, protraction downward rotation and tilt
N: Medial pectoral N.
What is pectoralis minor
100
O: Lateral epicondyle of the humerus
I: Lateral and inferior to olecranon process of ulna
A: Assists in elbow extension ( not a prime mover)
N: Radial N.
What is anconeus
200
O: Medial 3rd clavicle, sternum, and costal cartilage of ribs 1-6
I: Lateral Lip of the biccipital groove of humerus
A: Shoulder adduction, medial rotation and horizontal adduction
N: Lateral and medial pectoral N.
What is Pectoralis major
200
O: Spine of scapula
I: Deltoid tuberosity
A: Shoulder abduction, extension, hyperextension, lateral rotation and horizontal abduction
N: Axillary N.
What is posterior deltoid
200
O: Lateral surface of upper eight ribs
I: Vertebral border of the scapula anterior surface
A: Scapular protraction and upward rotation
N: Long thoracic N.
What is serratus anterior
200
O: Occipital bone, nuchal ligament on upper cervical spinous processes
I: Outer 3rd of clavicle and acromion process
A: Scapular elevation and upward rotation
N: Spinal accessory N. and C3/C4 sensory component
What is upper trapezius
200
O: Long head-infraglenoid tubercle of scapula, Lateral head- inferior to greater tubercle on posterior humerus, Medial head- posterior surface of humerus
I: Olecranon process
A: Elbow extension
N: Radial N.
What is triceps
300
O: Spinous processes of T7-L5 via thoracolumbar fascia, posterior surface of sacrum, iliac crest and lower 3 ribs
I: Medial Floor of bicipital groove of humerus
A: Shoulder extension, adduction, medial rotation and hyperextension
N: Thoracodorsal N.
What is latissimus dorsi
300
O: Supraspinous fossa of scapula
I: Greater tubercle of humerus
A: Shoulder Abduction
N: Suprascapular N.
What is supraspinatus
300
O: Spinous processes of C7-T5
I: Vertebral border of scapula bet. spine and inferior angle
A: Scapular retraction, elevation and downward rotation
N: Dorsal scapular N.
What are rhomboids
300
This muscle originates of the coracoid process of the scapula, it's action is to stabilize the shoulder joint.
What is corachobrachialis
300
O: Lateral supracondylar ridge on the humerus
I: Styloid process of the radius
A: Elbow flexion
N: Radial N.
What is brachioradialis
400
O: Inferior axillary border of scapula, near inferior angle
I: Medial lip of bicipital groove of humerus, anterior
A: Shoulder extension, adduction and medial rotation
N: Lower subscapular N.
What is teres major
400
O: Acromioin process of clavicle
I: Deltoid tuberosity
A: Shoulder Abducion
N: Axillary N.
What is middle deltoid
400
O: Spinous process of middle and lower thoracic vertebrae
I: Base of scapular spine
A: Scapular depression and upward rotation
N: Spinal accessory N. and C3/C4 sensory component
What is lower trapezius
400
O: Spinous processes of C7-T3
I: Scapular Spine
A: Scapular retraction
N: Spinal accessory N. and C3/C4 sensory component
What is middle trapezius
400
O: Long head- supraglenoid tubercle of scapula, Short head- coracoid process of scapula
I: Radial tuberosity of the radius
A: Elbow flexion, forearm supination
N: Musculocutaneous N.
What is biceps
500
O: Axillary border of scapula
I: Greater tubercle of humerus
A: Shoulder lateral rotation and horizontal abduction
N: Axillary N.
What is teres minor
500
O: Subscapular fossa
I: Lesser tubercle
A: Shoulder medial rotation
N: Upper and lower subscapular N.
What is subscapularis
500
These three muscle form a force couple to rotate the scapula upward
What is serratus anterior, upper trapezius and lower trapezius
500
These three muscles form a force couple for scapular downward rotation.
What are levator scapula, rhomboids and pectoralis minor muscles.
500
O: Distal half of humerus, anterior
I: Coronoid process and ulnar tuberosity of the ulna
A: Elbow flexion
N: Musculocutaneous N.