bone origins
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| trapezius | dorsal midline of neck and thorax
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| rhomboideus | -caudal surface of skull
-dorsal midline of neck and thorax
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| serratus ventralis | -last 5 cervical vertebrae
-first 7-8 ribs
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| omotransversarius | wing of atlas
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| brachiocephalicus | -mastoid process
-cranial half of dorsal midline of neck
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| latissimus dorsi | spinous process of thoracic and first few lumbar vertebrae via the toracolumbar fascia
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| superficial pectoral | cranial sternum
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| deep pectoral | length of sternum
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| extrinsic muscles attaching to scapula | trapezius
rhomboideus
serratus ventralis
omotransversarius
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| extrinsic muscles attaching to humerus | brachipcephalicus
latissimus dorsi
superficial pectoral
deep pectoral
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| craniolateral muscles of forearm | extensor carpi radialis
common digital extensor
lateral digital extensor
ulnaris lateralis
abductor pollicus longus
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| caudomedial muscles of forearm | flexor carpi ulnaris
flexor carpi radialis
superficial digital flexor
deep digital flexor
***all have an origin at medial epicondyle of humerus***
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| lateral muscles of shoulder | supraspinatus
infraspinatus
deltoideus
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| medial muscles of shoulder | subscapularis
teres major
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| branial muscles of arm | biceps brachii
brachialis
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| caudal muscles of arm | tensor fascia antebrachii
triceps brachii
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| extensor carpi radialis | lateral epicondyle of humerus
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| common digital extensor | lateral epicondyle of humerus
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| lateral digital extensor | lateral epicondyle of humerus
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| ulnaris lateralis | lateral epicondyle of humerus
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| abductor pollicus longus | -middle third of lateral border of ulna
-adjacent interosseous membrane
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| muscles with origin at lateral epicondyle of humerus | extensor carpi radialis
common digital extensor
lateral digital extensor
ulnaris lateralis
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| flexor carpi ulnaris | -medial epicondyle of humerus
-caudomedial surface of olecranon of ulna
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| flexor carpi radialis | medial epicondyle of humerus
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| superficial digital flexor | medial epicondyle of humerus
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| deep digital flexor | -medial epicondyle of humerus
-caudal border of ulna
-medial border of radius
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| supraspinatus | supraspinous fossa of scapula
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| infraspinatus | infraspinous fossa of scapula
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| deltoideus | spine and acromion of scapula
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| subscapularis | subscapular fossa of scapula
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| teres major | proximal portion of distal border of scapula
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| biceps brachii | supraglenoid tubercle of scapula
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| brachialis | proximal part of lateral humerus (brachial groove)
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| tensor fascia antebrachii | fascia on lateral surface of latissimus dorsi
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| triceps brachii | -long:caudal border of scapula, distal to origin of teres major m.
-lateral: tricipital line of humerus
-medial: crest of lesser tubercle
-accessory: neck of humerus
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