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Anatomy 1 Functions

Gross Anatomy 1
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Latissimus dorsi muscle
retracts limb and flexes shoulder
"digging"
Sternothyroideus muscle
draw larynx and tongue caudally
Sternohyoideus muscle
draw larynx and tongue caudally
Trapezius muscle
lift and abduct forelimb
Omotransversarius muscle
extend limb or flex neck laterally
Brachiocephalicus muscle
extend limb, pulls the head to one side, arches the neck
Superficial pectoral muscle- transverse
Adduct limb
Superficial pectoral muscle- descending
Adduct limb
Rhomboideus muscle
elevate forelimb and draw scapula to trunk
Serratus ventralis muscle
support trunk and depress scapula
Deep pectoral muscle
when limb advanced: pull trunk cranially and extend shoulder
when not weight bearing: draw limb cranially and flex shoulder
adduct limb
Sternocephalicus muscle
draw head and neck to side
Supraspinatus muscle
extend and stabilize shoulder
Infraspinatus muscle
extend or flex shoulder joint
abduct shoulder and rotate laterally
Subscapularis muscle
adduct, extend, and medially stabilize shoulder joint
rotate shoulder medially
Coracobrachialis muscle
adduct, extend, and stabilize shoulder
Deltoideus muscle
flex the shoulder
Teres major muscle
flex shoulder, rotate shoulder medially, and prevent lateral rotation
Teres minor muscle
flex shoulder
rotate shoulder laterally
Long head of triceps brachii muscle
extend elbow and flex shoulder
Lateral head of triceps brachii muscle
extend elbow
Medial head of triceps brachii muscle
extend elbow
Accessory head of triceps brachii muscle
extend elbow
Tensor fascia antebrachii muscle
extend elbow
Anconeus muscle
extend the elbow
Biceps brachii muscle
flex the elbow and extend the shoulder
Brachialis muscle
flex the elbow
Supinator muscle
rotate forearm laterally to supinate paw
flex the elbow
Pronator teres muscle
rotate forearm medially to pronate paw
flex the elbow
Pronator quadratus muscle
pronate the paw
Extensor carpi radialis muscle
extend the carpus
Common digital extensor muscle
extend joints of four principle digits and carpus
Lateral digital extensor muscle
extend carpus and joints of digits 3,4, & 5
Ulnaris lateralis muscle
abduct carpal joint and support carpus
Flexor carpi radialis muscle
flex the carpus
Flexor carpi ulnaris muscle
flex the carpus
Superficial digital flexor muscle
flex the carpal, metocarpophalangeal, and proximal interphalangeal joints (digits 2-5)
Deep digital flexor muscle
flex the carpal and metacarpophalangeal joints and proximal/distal interphalangeal joints of digits
Abductor digit 1 longus muscle
abduct first digit and extend carpal joints
Subclavius muscle
protects the brachial plexus from injury
Omohyoideus muscle
Medial boundary of the jugular groove in the horse
Cutaneous colli muscle
Covers caudal part of jugular groove in horse