Changes

:It has three heads:  

:It has three heads:  

:'''Origin''':

:'''Origin''':

::''Long'' head: Caudal margin of the [[Bones and Cartilages - Horse Anatomy#Scapula|scapula]]

::''Long'' head: Caudal margin of the [[Limb Bones and Cartilages - Horse Anatomy#Scapula|scapula]]

::''Lateral'' and ''Medial'' heads: Shaft of the [[Bones and Cartilages - Horse Anatomy#Humerus|humerus]] (lateral and medial aspects, respectively)

::''Lateral'' and ''Medial'' heads: Shaft of the [[Limb Bones and Cartilages - Horse Anatomy#Humerus|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 [[Joints and Ligaments - Horse Anatomy#Elbow Joint|elbow]]

:'''Action''': Extends and stabilizes the [[Joints and Ligaments - Horse Anatomy#Elbow Joint|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 [[Bones and Cartilages - Horse Anatomy#Scapula|scapula]] to the olecranon

:Overlies the triceps extending from the [[Limb Bones and Cartilages - Horse Anatomy#Scapula|scapula]] to the olecranon

:'''Origin''': Caudal border of the [[Bones and Cartilages - Horse Anatomy#Scapula|scapula]]

:'''Origin''': Caudal border of the [[Limb Bones and Cartilages - Horse Anatomy#Scapula|scapula]]

:'''Insertion''':Antebrachial fascia

:'''Insertion''':Antebrachial fascia

:'''Action''': Tenses antibrachial fascia and extends the [[Joints and Ligaments - Horse Anatomy#Elbow Joint|elbow]]

:'''Action''': Tenses antibrachial fascia and extends the [[Joints and Ligaments - Horse Anatomy#Elbow Joint|elbow]]

'''''Anconeus'''''  

'''''Anconeus'''''  

:'''Innervation''': Radial n. from the brachial plexus

:'''Innervation''': Radial n. from the brachial plexus

:'''Origin''': Distal [[Bones and Cartilages - Horse Anatomy#Humerus|humerus]] and olecranon fossa,deep to the triceps

:'''Origin''': Distal [[Limb Bones and Cartilages - Horse Anatomy#Humerus|humerus]] and olecranon fossa,deep to the triceps

:'''Insertion''': Lateral olecranon, joining the lateral head of the triceps

:'''Insertion''': Lateral olecranon, joining the lateral head of the triceps

:'''Action''': Extends the [[Joints and Ligaments - Horse Anatomy#Elbow Joint|elbow]]

:'''Action''': Extends the [[Joints and Ligaments - Horse Anatomy#Elbow Joint|elbow]]

'''''Biceps brachii'''''  

'''''Biceps brachii'''''  

:'''Innervation''': Musculocutaneous n. from the brachial plexus

:'''Innervation''': Musculocutaneous n. from the brachial plexus

:'''Origin''': Supraglenoid tubercle of the [[Bones and Cartilages - Horse Anatomy#Scapula|scapula]]

:'''Origin''': Supraglenoid tubercle of the [[Limb Bones and Cartilages - Horse Anatomy#Scapula|scapula]]

:'''Insertion''': Distally, the muscle divides into a medial and lateral portion.  

:'''Insertion''': Distally, the muscle divides into a medial and lateral portion.  

:: Medial - Medial tuberosity on the proximal [[Bones and Cartilages - Horse Anatomy#Radius and Ulna|radius]]

:: Medial - Medial tuberosity on the proximal [[Limb Bones and Cartilages - Horse Anatomy#Radius and Ulna|radius]]

:: Lateral - Proximal [[Bones and Cartilages - Horse Anatomy#Radius and Ulna|radius and ulna]]

:: Lateral - Proximal [[Limb Bones and Cartilages - Horse Anatomy#Radius and Ulna|radius and ulna]]

:It runs through the intertubercular groove of the [[Bones and Cartilages - Horse Anatomy#Humerus|humerus]] facilitated by the '''bicipital bursa'''.

:It runs through the intertubercular groove of the [[Limb Bones and Cartilages - Horse Anatomy#Humerus|humerus]] facilitated by the '''bicipital bursa'''.

::'''Action''': Flexes the [[Joints and Ligaments - Horse Anatomy#Elbow Joint|elbow]], extends and stabilises the [[Joints and Ligaments - Horse Anatomy#Shoulder Joint|shoulder]] during the stance phase

::'''Action''': Flexes the [[Joints and Ligaments - Horse Anatomy#Elbow Joint|elbow]], extends and stabilises the [[Joints and Ligaments - Horse Anatomy#Shoulder Joint|shoulder]] during the stance phase

'''''Brachialis'''''  

'''''Brachialis'''''  

:'''Innervation''': Musculocutaneous n. from the brachial plexus

:'''Innervation''': Musculocutaneous n. from the brachial plexus

:'''Origin''': Proximocaudal [[Bones and Cartilages - Horse Anatomy#Humerus|humerus]]

:'''Origin''': Proximocaudal [[Limb Bones and Cartilages - Horse Anatomy#Humerus|humerus]]

:'''Insertion''': Spirals to insert next to biceps on the medial [[Bones and Cartilages - Horse Anatomy#Radius and Ulna|radius]]

:'''Insertion''': Spirals to insert next to biceps on the medial [[Limb Bones and Cartilages - Horse Anatomy#Radius and Ulna|radius]]

:'''Action''': Flexes the [[Joints and Ligaments - Horse Anatomy#Elbow Joint|elbow]]

:'''Action''': Flexes the [[Joints and Ligaments - Horse Anatomy#Elbow Joint|elbow]]

[[Category:To Do - AP Review]]

[[Category:To Do - AP Review]]