Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Shoulder/Arm Muscles
Superficial and deep muscles of the shoulder and arm
| Term | Definition |
|---|---|
| Trapezius | Origin: posterior occipital bone, igentum nuchae, C7-T12; Insertion: clavicle, acromion, and spine of scapula; Action: extends and abducts head, rotates and adducts scapula, fixes scapula |
| Deltoid | Origin: clavicle, acromion, spine of scapula; Insertion: deltoid tuberosity of the humerus; Action: abducts arm, flexes, extends, medially, and laterally rotates arm |
| Pectoralis Major | Origin: clavicle, sternum, cartilages of ribs 1-7; Insertion: crest of greater tubercle of humerus; Action: flexes, adducts, and medially rotates arm |
| Pectoralis Minor | Origin: ribs 3-5; Insertion: coracoid process of scapula; Action: depresses glenoid cavity, raises ribs 3-5 |
| Latissimus Dorsi | Origin: T7-12, L1-5, S1-5, crest of ilium, ribs 10-12; Insertion: intertubercular groove of humerus; Action: extends, adducts, and medially rotates arm, draws shoulder inferiorly |
| Supraspinatus | Origin: suprapinous fossa; Insertion: greater tubercle of humerus; Action: abducts arm, helps stabilize shoulder joint |
| Infraspinatus | Origin: infraspinous fossa; Insertion: greater tubercle of humerus; Action: laterally rotates arm, stabilize shoulder joint |
| Subscapularis | Origin: subscapular fossa; Insertion: lesser tubercle of humerus; Action: medially rotates arm, stabilizes shoulder joint |
| Teres Minor | Origin: lateral border of scapula; Insertion: greater tubercle of humerus; Action: laterally rotates and adducts arm, stabilizes shoulder joint |
| Teres Major | Origin: inferior angle of scapula; Insertion: crest of lesser tubercle of humerus; Action: extends, adducts, and medially rotates arm |
| Biceps Brachii | Origin: long head: superior margin of glenoid cavity, short head: coracoid process of scapula; Insertion: radial tuberosity; Action: flexes arm, flexes forearm, supinates hand |
| Triceps Brachii | Origin: infraglenoid tuberosity of scapula, lateral and posterior surface of humerus; Insertion: olranon process, tuberosity of ulna; Action: extends and adducts arm, extends forearm |
| Coracobrachialis | Origin: coracoid process of scapula; Insertion: midmedial shaft of humerus; Action: flexes and adducts arm |
| Brachialis | Origin: anterior, distal surface of humerus; Insertion: coronoid process of ulna; Action: flexes forearm |
| Brachioradialis | Origin: lateral supracondylar ridge of humerus; Insertion: styloid process of radius; Action: flexes forearm |
Created by:
koalas2013
Popular Anatomy sets