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MSK (Rotator cuff
Shoulder joint
Scapular and circumflex arteries…
MSK
Rotator cuff
- Shoulder joint
- Scapular and circumflex arteries
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Ossification
Intramembranous
- Ossification center appears in fibrous connective tissue membrane
- Selected centrally located mesenchymal cells cluster and differentiate into osteoblasts forming ossification centre
- Bone matrix (osteoid) secreted within fibrous membrane
- Osteoblasts begin to secrete osteoid, mineralised within a few days
- Trapped osteoblasts become osteocytes
- Woven bone and periosteum form
- Accumulating osteoid is laid down between embryonic blood vessels, which from random network. Network of trabeculae
- Vascularised mesenchyme condenses on external face of woven bone and becomes periosteum
- Bone collar of compact bone forms and red marrow appears
- Trabeculae just deep to periosteum thicken, forming woven bone collar, later replaced with mature lamellar bone
- Spongy bone consisting of distinct trabeculae, persists internally and its vascular tissue becomes red marrow
- Chondrocytes at center of growing cartilage model enlarge and then die as matrix calcifies
- Newly derived osteoblasts cover chaft of cartilage in thin layer bone
- Blood vessels penetrate cartilage. New osteoblasts form primary ossification centre
- Bone of shaft thickens, cartilage near each epiphysis is replaced by shafts of bone
- Blood vessels invade epiphyses and osteoblasts form secondary ossification centre
Endochondral
- Formation of bone collar around hyaline cartilage model
- Cavitation of hyaline cartilage within cartilage model
- Invasion of internal cavities by periosteal bud and spongy bone formation
- Formation of medullary cavity as ossification continues: appearance of secondary ossification centers in epiphyses
- Ossification of epiphyses; hyaline cartilage remains only in epiphyseal plates and articular cartilages
Arm
FUNCTION
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Anterior compartment arm
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Musculocutaneous C5, C6
Radial nerve C7 some parts of brachialis
- Brachialis
- Coracobrachialis
- Biceps brachii
Posterior compartment forarem
(EXTENSION AND SUPINATION)
- Anterior and posterior interosseous arteries (branches of ulnar artery)
- Radial nerve
Deep
- Supinator
- Extensor pollicis longus
- Extensor pollicis brevis
- Abductor pollicis longus
- Extensor indices
Superficial
- Bracoradialis,
- Extensor carpi radialis longus,
- Extensor carpi radialis brevis,
- Extensor digitorum,
- Extensor digiti minimi,
- Extensor carpi ulnaris
Gluteal region
Lateral rotation hip
- Piriformis
- Obturator internus
- Obturator externus
- Gamellus superior
- Gamellus inferior
- Quadratus femoris
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Muscles face
Mastication
- Temporalis
- Masseter (superficial and deep head)
- Lateral pterygoid
- Medial pterygoid
- Buccinator
Facial expression
- Occipitofrontalis (moves scalp, wrinkles forehead + raises eyebrows)
- Orbicularis oculi
- Orbicularis oris
- Buccinator
Forearm
Anterior compartment (FLEXION AND PRONATION)
- Ulnar and radial artery
- Median nerve
Intermediate
- Flexor digittorum superficialis
Deep
- Flexor digitorum profundus
- Flexor pollicis longus
- Pronator quadratus
Superficial
- Flexor carpi ulnaris
- Palmaris longus,
- Flexor carpi radialis
- Pronator teres
- All muscles
- Labelling exercies + quiz
- Youtube videos
- MSK
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