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Bovine Forelimb - Anatomy & Physiology (view source)
Revision as of 17:00, 6 January 2011
, 17:00, 6 January 2011→Extensors
==Muscles of the Carpal and Digital Joints==
==Muscles of the Carpal and Digital Joints==
==Extensors==
===Extensors===
All have innervation from the radial n. from the brachial plexus. They have a craniolateral position on the forearm and almost all of them originate from the lateral epicondyle of the humerus.
All have innervation from the radial n. from the brachial plexus. They have a craniolateral position on the forearm and almost all of them originate from the lateral epicondyle of the humerus.
'''Extensor carpi radialis'''
'''''Extensor carpi radialis'''''
The most medial, inserts on 2nd/3rd metacarpal bone.
The most medial, inserts on 2nd/3rd metacarpal bone.
'''Ulnaris lateralis'''
'''''Ulnaris lateralis'''''
The most lateral, inserts on accessory carpal bone.
The most lateral, inserts on accessory carpal bone.
'''Extensor carpi obliquus''' (aka- abductor pollicis longus)
'''''Extensor carpi obliquus''''' (aka- abductor pollicis longus)
Origin: cranial radius.
Origin: cranial radius.
Insertion: most medial metacarpal bone .
Insertion: most medial metacarpal bone .
'''Common Digital Extensor'''
'''''Common Digital Extensor'''''
Insertion: extensor process of the distal phalanx of each digit.
Insertion: extensor process of the distal phalanx of each digit.
'''Lateral Digital Extensor'''
'''''Lateral Digital Extensor'''''
Insertion: dorsal proximal phalanges.
Insertion: dorsal proximal phalanges.
'''Medial Digital Extensor'''
'''''Medial Digital Extensor'''''
Insertion: middle and distal phalanges.
Insertion: middle and distal phalanges.