Veterinary Anatomy: Muscles of Forelimb

Cutaneous tronchi

Extensic- Canine

Latissimus Dorsi

Extrinsic- canine

Platyma

Extrensic- canine

Superficial pectoral

Extrinsic- canine

In red

Deep pectoral

Extrinsic- canine

In blue

Brachiocephalicus

Extrinsic- canine

Cleidobrachialis

canine

Cleidocephalicus

canine

Pars cervicalus (cleidocervicalis)

canine

Pars mastoidea (cleidomastoideus)

canine

Omotransversarius

Extrinsic- canine

Trapezius

Extrinsic- canine

Rhomboideus

Extrinsic- canine

Serratus Ventralis

Extrinsic- canine

Deltoideus

Intrinsic- canine

Scapular head of Deltoideus

Intrinsic- canine

Acromial head of Deltoideus

Intrinsic- canine

Infraspinatus

Intrinsic- canine

Teres minor

canine

Supraspinatus

Intrinsic- canine

Subscapularis

canine

Teres major

canine

Tensor fasciae antebrachii

canine

Triceps brachii

canine

Long head of the triceps brachii

canine

lateral head of triceps brachii

canine

Medial head of triceps brachii

canine

accessory head of triceps brachii

canine

anconeus

canine

Biceps brachii

canine

Intertubercular (Bicipital) Bursa

canine

DONT HAVE TO ID BUT WILL HAVE TO KNOW TOPICAL OUTLINE ON SURFACE OF ANIMAL

Brachialis

canine

Extensor carpi radialis

canine

Common digital extensor

canine

Lateral digital extensor

canine

Abductor digiti I longus

canine

Ulnaris lateralis

canine

Supinator

canine

Pronator teres

canine

what is in the blue/green?

Pronator quadratus

canine

Flexor carpi radialis

canine

Flexor carpi ulnaris

canine

Humeral head of the flexor carpi ulnaris

canine

Ulnar head of the flexor carpi ulnaris

canine

Superficial digital flexor

canine

Flexor manica of the superficial digital flexor

DONT HAVE TO ID

collar formed by the tendon of the superficial digital flexor around the deep flexor tendon that passes through it palmar to the metacarpophalangeal join

Deep digital flexor

canine

Interossei

canine

Trapezius

Extrinsic- equine

DONT HAVE TO ID

Latissimus dorsi

Extrinsic- equine

DONT HAVE TO ID

Brachiocephalicus

Extrinsic- equine

DONT HAVE TO ID

Cleidobrachialis is the portion seen on our specimens, the other parts have generally been removed

Omotransversarius

Extrinsic- equine

DONT HAVE TO ID

Fused to the dorsal border of the brachiocephalicus in the horse. Does not attach to the scapular spine, possibly because the horse has no acromion.

Rhomboideus

Extrinsic- equine

DONT HAVE TO ID

Serratus Ventralis

Extrinsic- equine

DONT HAVE TO ID

Superficial Pectoral

Extrinsic- equine

DONT HAVE TO ID

Subclavius

equine

Supraspinatus

Intrinsic- equine

Infraspinatus

Intrinsic- equine

Deltoideus

Intrinsic- equine

Teres major

Intrinsic- equine

Teres minor

Intrinsic- equine

DONT HAVE TO ID

small in the horse and obscured by the deltoideus which lies over it

Subscapularis

Intrinsic- equine

Bicep brachii

Brachium- equine

Lacertus Fibrosus

Brachium- equine

a fibrous structure connecting the biceps brachii with epimysium of the extensor carpi radialis

Brachialis

Brachium- equine

Triceps Brachii

Brachium- equine

Lateral head of triceps brachii

Brachium- equine

Long head of triceps brachii

Brachium- equine

Medial head of the triceps brachii

Brachium- equine

False. The equine does not

True/False:

just like the dog, the horse has a accessory head of the triceps brachii

Tensor Fasciae Antebrachii

Brachium- equine

Anconeus

Antebrachium- equine

Lateral side

Extensor Carpi Radialis

Antebrachium- equine

Common Digital Extensor

Antebrachium- equine

Lateral Digital Extensor

Antebrachium- equine

Ulnaris Lateralis

Antebrachium- equine

Flexor Carpi Ulnaris

Antebrachium- equine

Flexor Carpi Radialis

Antebrachium- equine

Accessory Ligament of Flexor Carpi Radialis

Antebrachium- equine

Accessory Ligament of Deep Digital Flexor

Antebrachium- equine

Deep Digital Flexor

Antebrachium- equine

Suspensory Ligament (Interosseous Muscles)

Antebrachium- equine

carpal pad

In red

The small pad that protrudes palmar to the carpus

metacarpal pads

In blue

singular pads located on the palmar and plantar surface of the metacarpal.

digital pads

In yellow

on the palmar and plantar surfaces of the phalanges

· Prevented by the tendon of the biceps brachii muscle

Shoulder flexion is prevented how?

· Prevented by the placement of collateral ligaments behind (caudal to) the axis of the joint

Elbow flexion is prevented how?

§ ligaments pull on the caudal aspect above and below the carpus to help hold it in extension

How does the superficial and deep digital flexor tendons and their accessory ligaments hold in extension?

· Prevented by the block shape of the carpal bones and the palmar carpal ligament

Carpus hyperextension is prevented how?

· Prevented by the suspensory apparatus, the extensor branches of the suspensory ligament, and the flexor tendons and their accessory ligaments.

Fetlock hyperextension is prevented how?

Pastern joint hyperextension is prevented how?