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:It has three heads:  
 
:It has three heads:  
 
:'''Origin''':
 
:'''Origin''':
::''Long head'': caudal margin of the scapula
+
::''Long'' head: Caudal margin of the scapula
::''Lateral'' and ''medial heads'': shaft of the humerus
+
::''Lateral'' and ''Medial'' heads: Shaft of the humerus (lateral and medial aspects, respectively)
 
:'''Insertion''': Olecranon, proteced by the tricipital bursa against the bone, and subcutaneous bursa against the skin
 
:'''Insertion''': Olecranon, proteced by the tricipital bursa against the bone, and subcutaneous bursa against the skin
 +
:'''Action''': Extends and stabilizes the elbow
    
'''''Tensor fasciae antebrachii'''''  
 
'''''Tensor fasciae antebrachii'''''  
 
:'''Innervation''': Radial n. from the brachial plexus
 
:'''Innervation''': Radial n. from the brachial plexus
 
:Overlies the triceps extending from the scapula to the olecranon
 
:Overlies the triceps extending from the scapula to the olecranon
 +
:'''Origin''': Caudal border of the scapula
 +
:'''Insertion''':Antebrachial fascia
 +
:'''Action''': Tenses antibrachial fascia and extends the elbow
    
'''''Anconeus'''''  
 
'''''Anconeus'''''  
 
:'''Innervation''': Radial n. from the brachial plexus
 
:'''Innervation''': Radial n. from the brachial plexus
:'''Origin''': distal humerus
+
:'''Origin''': Distal humerus and olecranon fossa,deep to the triceps
:'''Insertion''': lateral olecranon
+
:'''Insertion''': Lateral olecranon, joining the lateral head of the triceps
 +
:'''Action''': Extends the elbow
      Line 159: Line 164:  
:'''Innervation''': Musculocutaneous n. from the brachial plexus
 
:'''Innervation''': Musculocutaneous n. from the brachial plexus
 
:'''Origin''': Supraglenoid tubercle of the scapula
 
:'''Origin''': Supraglenoid tubercle of the scapula
:'''Insertion''': Medial tuberosity of the proximal radius and adjacent ulna
+
:'''Insertion''': Distally, the muscle divides into a medial and lateral portion.
:It runs through the intertubercular groove of the humerus.
+
:: Medial - Medial tuberosity on the proximal radius
 +
:: Lateral - Proximal radius and ulna
 +
:It runs through the intertubercular groove of the humerus facilitated by the '''bicipital bursa'''.
 +
::'''Action''': Flexes the elbow, extends and stabilises the shoulder during the stance phase
    
'''''Brachialis'''''  
 
'''''Brachialis'''''  
 
:'''Innervation''': Musculocutaneous n. from the brachial plexus
 
:'''Innervation''': Musculocutaneous n. from the brachial plexus
 
:'''Origin''': Proximocaudal humerus
 
:'''Origin''': Proximocaudal humerus
:'''Insertion''': Spirals to insert next to biceps
+
:'''Insertion''': Spirals to insert next to biceps on the medial radius
 +
:'''Action''': Flexes the elbow
    
====Muscles of the Carpal and Digital Joints====
 
====Muscles of the Carpal and Digital Joints====
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