| A | B |
|---|
| rectus capitus lateralis | allows the head to flex and incline side to side |
| splenius | turns and extends the neck |
| multifidus cervicus (deep) | allows the neck to flex and the head to rotate to the side |
| brachiocephalicus | moves the head from side to side, raises head in collection, swings the foreleg forward |
| trapezius | lifts shoulder and forehand |
| supraspinatus | permits the shoulder joint to extend |
| infraspinatus (deep) | allows the foreleg to rotate outward |
| deltoid | permits the shoulder joint to extend |
| tricep | permits the shoulder joint to flex |
| bicep & anterior pectoral | permits the forleg to extend |
| serratus thoracis | allows the trunk to be at the proper level when legs are planted |
| posterior pectoral | allows the foreleg to draw backward |
| extensor carpi fadialis | permits the foreleg to bend flex |
| latissimus dorsi | flexes the shoulder, permits lateral bending |
| longissimus dorsi | main muslce used in rearing, kicking, and jumping - and aids turning |
| intercostal muscles | supports the rib cage and aids in respiration |
| obliques | allows the hind legs to draw under, supports the back and internal organs |
| rectus abdominus | supports the back |
| gluteus | allows forward movement and hind end action |
| semimembranosus | permits the hock to extend |
| semitendinosis | extends the hip and hock joints |
| bicep femoris | maintains hip joint in extension |
| tensor fascia latae | allows the stifle to extend |
| fascia latae | allows the hip to flex |
| long digital extensor | permits the hind leg to flex |
| masseter | opens and closes the jaw, allows chewing |
| rhomboideus | lifts shoulder and forhand, pulls scapula forward |
| triceps brachii | extends the elbow joint |
| extensor carpus | extends the knee |
| flexor carpus | flexes the knee |
| digital extensor | extends the toe and knee |
| digital flexor | flexes the toe and knee and extends the elbow |
| superficial gluteal | flex and extend the hip, pulls hind leg toward body - rearing, galloping, kicking |
| gastrocnemius | maintains hip extension |
| peroneus tertius | works with superficial digital muscle to move the stifle and hock |
