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Bovine Forelimb - Anatomy & Physiology (view source)
Revision as of 16:55, 6 January 2011
, 16:55, 6 January 2011→Extrinsic Musculature
Action: raises scapula against the trunk and swings cranially to advance the limb.
Action: raises scapula against the trunk and swings cranially to advance the limb.
'''Brachiocephalic m.''': Accessory n.
'''''Brachiocephalic m.''''': Accessory n.
The two parts are separated by the clavicle, where it exists.
The two parts are separated by the clavicle, where it exists.
Actions: advances the limb and extends the shoulder joint when limb is in motion. Draws the head and neck ventrally when the limb is fixed.
Actions: advances the limb and extends the shoulder joint when limb is in motion. Draws the head and neck ventrally when the limb is fixed.
'''Omotransversarius''': Accessory n.
'''''Omotransversarius''''': Accessory n.
Origin: transverse processes of the atlas.
Origin: transverse processes of the atlas.
Action: advancing the limb.
Action: advancing the limb.
'''Latissimus dorsi''': local branch of brachial plexus
'''''Latissimus dorsi''''': local branch of brachial plexus
The broadest muscle of the back.
The broadest muscle of the back.
Actions: antagonist to the brachiocephalic m. The cranial fibers strap the scapula to the chest. It retracts the free limb and flexes shoulder joint. It draws the trunk forward over the fixed limb.
Actions: antagonist to the brachiocephalic m. The cranial fibers strap the scapula to the chest. It retracts the free limb and flexes shoulder joint. It draws the trunk forward over the fixed limb.
'''Pectoral mm.''': brachial plexus
'''''Pectoral mm.''''': brachial plexus
Two superficial parts, cranial and caudal, these aren't very distinct in the ox.
Two superficial parts, cranial and caudal, these aren't very distinct in the ox.
Action: adduct the forelimb and assist in protraction and retraction.
Action: adduct the forelimb and assist in protraction and retraction.
'''Serratis ventralis''': branch of the brachial plexus.
'''''Serratis ventralis''''': branch of the brachial plexus.
Origin: C4 to 10th rib.
Origin: C4 to 10th rib.
Action: supporting the weight of the trunk. It is reinforced by strong fascia. The cervical portion can retract the limb and the caudal portion can advance the limb.
Action: supporting the weight of the trunk. It is reinforced by strong fascia. The cervical portion can retract the limb and the caudal portion can advance the limb.
'''Rhomboids''': brachial plexus,
'''''Rhomboids''''': brachial plexus,
Origin: nuchal ligament.
Origin: nuchal ligament.