1. ANPS Anatomy & Physiology Joints, Muscles and Movement II

2. Muscles of Facial Expression Facial Muscles

3. Temporalis m. - elevation (bite) Masseter m. - elevation (bite) Lat. Pterygoid m. - protraction, grinding Med. Pterygoid m. - elevation, grinding Muscles of Mastication

4. Posterior Anterior Atlas Axis Rectus capitis major & minor m. Superior & inferior oblique m. Longus capitis m. Rectus capitis anterior & lateralis m. Subocciptal m. Head extension, rotation Ant. vertebral m. Head flexion, tilt Neck Muscles

5. Sternocleidomastoid Sternal head Clavicular head Trapezius Bilateral - head flexion Unilateral - rotation and tilt to opposite side Neck Muscles

6. Trapezius m. Latissimus dorsi m. Deltoid m. Supraspinatus m. Infraspinatus m. Teres minor & major m. Back and Shoulder Muscles (overview) Rhomboid major/minor

7. Serratus posterior superior & inferior m. Spinalis m. Longissimus m. Iliocostalis m. Erector spinae m. Bilateral – back extension (postural) Unilateral – lateral bending to same side Assist respiration Back and Shoulder Muscles (overview)

8. Deltoid m. Pectoralis major m. Trapezius m. Serratus anterior m. Pectoralis minor m. Thoracic and Shoulder Muscles (overview)

9. Trapezius m. - elevates, depresses, rotates scapula upward Latissimus dorsi m. – adducts, medially rotates and extends arm at shoulder joint Deltoid m. – major abductor of arm at shoulder joint Posterior view Shoulder Muscles (Actions)

10. Serratus anterior m. - protracts scapula Pectoralis major m. – flexes, adducts & medially rotates arm at shoulder joint Deltoid m. – major abductor of arm at shoulder joint Pectoralis minor m. – depresses shoulder Anterior view Shoulder Muscles (Actions)

11. infraspinatus m. supraspinatus m. teres major m. teres minor m. Muscles in order of arrow position: Supraspinatus m. (superior scapular fossa) – abducts arm at shoulder joint Infraspinatus m. (inferior scapular fossa) – lateral rotation of arm at shoulder joint Teres minor m. – lateral rotation of arm at shoulder Teres major m. – medial rotation of arm at shoulder (not part of rotator cuff) Posterior view Deep Shoulder Muscles (Actions)

12. (rotator cuff muscles) teres minor m. - lateral rotation at shoulder Infraspinatus m. - lateral rotation at shoulder joint Supraspinatus m. – abduct arm at shoulder joint Lateral ViewPosterior View

13. subscapularis m. – medial rotation at shoulder joint Right shoulder Lateral View Anterior View Deep Shoulder Muscles (Actions) (rotator cuff muscles) Supraspinatus m.

14. Serratus anterior muscle - protracts scapula (lower fibers can also rotate shoulder upwards) Rhomboid major & minor m. Serratus anterior m. Rhomboid muscles - retracts scapula Deep Shoulder Muscles (scapular protraction and retraction)

15. Serratus anterior m. (scapula protraction, lower fibers, upward rotation) Subscapular fossa (subscapularis m.) Glenoid fossa Serratus anterior muscle

16. Biceps brachii m. – flexes and supinates forearm at elbow joint Anterior view Brachialis m. – flexes forearm at elbow joint (deep to biceps) Arm Muscles

17. Flexor group of forearm- flex of wrist and fingers Brachioradialis m. - flexion at elbow joint Muscles of the anterior group in the forearm (left side) Forearm Flexor Muscle Groups Superficial layer: (wrist action) Pronator teres m. Flexor carpi radialis m. Palmaris longus m. Flexor carpi ulnaris m. Deeper layers: (finger motion) Flexor digitorum superficialis m. Flexor digitorum profundus m. Pronator quadratus m. Flexor pollicis longus m. and more.....

18. Thenar muscle group- Abductor pollicis brevis m. Flexor pollics brevis m. Opponens pollicis m. Hypothenar muscle group- Abductor digiti minimi m. Flexor digiti minimi m. Opponens digiti minimi m. Hand Muscle Groups

19. Triceps m. – extends forearm at elbow joint Extensor group of forearm – extends wrist and fingers Extensor carpi radialis longus & brevis m. Extensor pollicis longus & brevis m. Extensor digitorum m. Extensor carpi ulnaris m. and more....... Posterior view Arm/Forearm Muscle Extensor Groups

20. Nerve Supply to the Upper Extremity

21. Ulnar nerve Radial nerve Median nerve Spinal nerves Brachial plexus – terminal nerves Musculocutaneous nerve Musculocutaneous n. - arm flexors Median n. - forearm flexors and thenar m. Ulnar n. - some forearm flexors and most hand m. Radial n. - extensor m. in arm and forearm.

22. Blood Supply to Upper Limb Aortic arch Subclavian artery Axillary artery Brachial artery Radial and Ulnar arteries Superficial and deep palmer arches Axillary a. Brachial a. Radial a. Ulnar a. Palmer arches