OIAs Flashcards
Deltoid OIA?
Origin: clavicle, acromion process, and the spine of scapula
Insertion: deltoid tuberosity of the humerus
Action: abduct, flex, extend, laterally rotate and medially rotate the arm
Brachialis OIA?
Origin: anterior distal humerus
Insertion: coronoid process of the ulna
Action: flexes forearm / elbow
Flexor Carpi Radialis action?
Flexes and abducts wrist
Infraspinatus OIA?
Origin: infraspinous fossa of the scapula
Insertion: greater tubercle of the humerus
Action: laterally rotate the arm and stabilize the GH joint
Pectoralis Minor OIA?
Origin: anterior surface of upper middle ribs
Insertion: coracoid process of the scapula
Action: depresses, protract and rotates the scapula
Triceps Brachii Long head OIA
Origin: infraglenoid tubercle of the scapula
Insertion: olecranon process of the ulna
Action: extends forearm/elbow and arm
Triceps Brachii Lateral OIA
Origin: proximal posterior surface of the humerus
Insertion: olecranon process of the ulna
Action: extends forearm/ elbow
Triceps Brachii Medial OIA
Origin: distal posterior surface of the humerus
Insertion olecranon process of the ulna
Action: extends forearm/ elbow
Biceps Brachii Long head OIA
Origin: supraglenoid tubercle of the scapula
Insertion: tuberosity of radius
Action: flexes arm, forearm and supinates forearm
Biceps Brachii Short head OIA
Origin: coracoid process of the scapula
Insertion: tuberosity of radius
Action: flexes arm and forearm
Coracobrachialis OIA
Origin: coracoid process of the scapula
Insertion: medial surface of the humerus
Action: flexes and adducts arm
Supraspinatus OIA
Origin: supraspinous fossa of the scapula
Insertion: greater tubercle of the humerus
Action: abducts arm and stabilizes GH joint
Subscapularis OIA
Origin: Subscapular fossa of the scapula
Insertion: Lesser tubercle of the humerus
Action: medially rotates the arm and stabilizes the GH joint
Trapezius Action
elevates, depresses, rotates and retracts the scapula
Rhomboid Minor OIA
Origin: spinous process of lower cervical and upper thoracic vertebrae
Insertion: vertebral border of the scapula (base of spine)
Action:rotates and retracts the scapula
Rhomboid Major OIA
Origin: spinous process of upper thoracic vertebrae
Insertion: vertebral border of scapula (below spine)
Action: rotates and retracts the scapula
Levator scapula OIA
Origin: transverse process of cervical vertebrae
Insertion: vertebral border of the scapula
Action: elevates scapula
Teres Major OIA
Origin: inferior angle of the scapula
Insertion: lesser tubercle of the humerus
Action: extends, adducts, and medially rotates arm
Teres Minor OIA
Origin: axillary border of scapula
Insertion: greater tubercle of humerus
Action: laterally rotates and adducts arm, and stabilizes GH joint
Serratus Anterior OIA
Origin: outer surface of ribs 1-9
Insertion: entire length of vertebral border of scapula
Action: protracts and rotates the scapula
Extensor Digitorum Action
extends wrist and fingers
Flexar Carpi Ulnaris Action
flexes and adducts the wrist
Palmaris Longus Action
flexes the wrist
Supinator OIA
(under brachioradialis)
Origin: lateral epicondyl of humerus
Insertion: anteriolateral surface of radius
Action: supinates forearm/elbow
Extensor carpi radialis OIA
extends and abducts the wrist
Latissimus Dorsi Action
extends, adducts, and medially rotates the arm
Pronator OIA
Origin: medial epicondyle of humerus
Insertion: mid-lateral surface of radius
Action: pronates forearm/elbow
Brachioradialis OIA
Origin: distal lateral humerus
Insertion: styloid process of radius
Action: flexes forearm/elbow
