Download ANPS 019 Beneyto 10-18-13

ANPS
Anatomy & Physiology
Joints, Muscles and Movement II
Facial Muscles
Muscles of
Facial Expression
Muscles of Mastication
Temporalis m. - elevation (bite)
Masseter m. - elevation (bite)
Lat. Pterygoid m. - protraction, grinding
Med. Pterygoid m. - elevation, grinding
Neck Muscles
Rectus capitis major
& minor m.
Anterior
Superior & inferior
oblique m.
Atlas
Subocciptal m.
Head extension, rotation
Axis
Posterior
Longus capitis m.
Rectus capitis anterior
& lateralis m.
Ant. vertebral m.
Head flexion, tilt
Neck Muscles
Trapezius
Sternocleidomastoid
Sternal head
Clavicular head
Bilateral - head flexion
Unilateral - rotation and tilt to opposite side
Back and Shoulder Muscles (overview)
Rhomboid major/minor
Trapezius m.
Supraspinatus m.
Infraspinatus m.
Deltoid m.
Latissimus
dorsi m.
Teres minor
& major m.
Back and Shoulder
Muscles (overview)
Serratus posterior
superior & inferior m.
Spinalis m.
Longissimus m.
Erector spinae m.
Iliocostalis m.
Assist respiration
Bilateral – back extension (postural)
Unilateral – lateral bending to same side
Thoracic and Shoulder
Muscles (overview)
Trapezius m.
Deltoid m.
Pectoralis major m.
Serratus anterior m.
Pectoralis
minor m.
Shoulder Muscles (Actions)
Deltoid m. – major
abductor of arm at
shoulder joint
Trapezius m. elevates, depresses,
rotates scapula upward
Posterior view
Latissimus dorsi m. –
adducts, medially rotates and
extends arm at shoulder joint
Shoulder Muscles (Actions)
Deltoid m. – major
abductor of arm at
shoulder joint
Pectoralis major m. – flexes,
adducts & medially rotates
arm at shoulder joint
Pectoralis minor m. –
depresses shoulder
Anterior view
Serratus anterior m. protracts scapula
Deep Shoulder Muscles (Actions)
Muscles in order of arrow position:
supraspinatus m.
infraspinatus m.
teres minor m.
teres major m.
Posterior view
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)
Deep Shoulder Muscles (Actions)
(rotator cuff muscles)
Supraspinatus m. –
abduct arm at shoulder joint
Infraspinatus m. lateral rotation at
shoulder joint
teres minor m. lateral rotation at
shoulder
Lateral View
Posterior View
Deep Shoulder Muscles (Actions)
(rotator cuff muscles)
Supraspinatus m.
subscapularis m. –
medial rotation at
shoulder joint
Anterior View
Lateral View
Right shoulder
Deep Shoulder Muscles
(scapular protraction and retraction)
Rhomboid major
& minor m.
Rhomboid muscles
- retracts scapula
Serratus anterior m.
Serratus anterior muscle
- protracts scapula
(lower fibers can also rotate
shoulder upwards)
Serratus anterior muscle
Glenoid fossa
Subscapular fossa
(subscapularis m.)
Serratus anterior m.
(scapula protraction,
lower fibers, upward rotation)
Arm Muscles
Brachialis m. –
flexes forearm
at elbow joint
(deep to biceps)
Biceps brachii m. –
flexes and supinates forearm
at elbow joint
Anterior view
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.....
Brachioradialis m. flexion at elbow joint
Flexor group of forearmflex of wrist and fingers
Muscles of the anterior group in the forearm
(left side)
Hand Muscle Groups
Hypothenar muscle groupAbductor digiti minimi m.
Flexor digiti minimi m.
Opponens digiti minimi m.
Thenar muscle groupAbductor pollicis brevis m.
Flexor pollics brevis m.
Opponens pollicis m.
Arm/Forearm Muscle
Extensor Groups
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.......
Triceps m. –
extends forearm at
elbow joint
Posterior view
Nerve Supply to the
Upper Extremity
Brachial plexus – terminal nerves
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.
Radial nerve
Spinal nerves
Musculocutaneous
nerve
Ulnar nerve
Median nerve
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