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Pelvic Limb Muscles
Origin, Insertion, Action and Innervations of the Equine PL
| Question | Answer |
|---|---|
| Origin of the Iliopsoas | Ventral surface of bodies and transverse processes of lumbar vertebrae. Ventral surface of wing and body of Ilium |
| Insertion of the Iliopsoas | Lesser trochanter of the femur |
| Action of the Iliopsoas | Flex Hip Rotate Thigh |
| Innervation of the Iliopsoas | Ventral branches of lumbar nerves Femoral nerve |
| Origin of the Tensor Fascia Latae | Coxal Tuber |
| Insertion of the Tensor Fascia Latae | Lateral Patellar Ligament Cranial Border of Tibia Patella via fascia lata |
| Action of the Tensor Fascia Latae | Flex Hip |
| Innervation of the Tensor Fascia Latae | Cranial Gluteal Nerve |
| Origin of the Superficial Gluteal | Coxal tuber Gluteal fascia |
| Insertion of the Superficial Gluteal | Third trochanter |
| Action of the Superficial Gluteal | Flex Hip Abduct Thigh |
| Innervation of the Superficial Gluteal | Cranial Gluteal Nerve Caudal Gluteal Nerve |
| Origin of the Middle Gluteal | Coxal tuber Iliac wing Sacrum Sacrosciatic Ligament |
| Insertion of the Middle Gluteal | Greater trochanter (Caudal) |
| Action of the Middle Gluteal | Extend Hip Abduct Thigh |
| Innervation of the Middle Gluteal | Cranial Gluteal Nerve Caudal Gluteal Nerve |
| Origin of the Deep Gluteal | Ischiatic Spine |
| Insertion of the Deep Gluteal | Greater trochanter (cranial) |
| Action of the Deep Gluteal | Abduct thigh |
| Innervation of the Deep Gluteal | Cranial Gluteal Nerve |
| Origin of the Biceps Femoris | Sacrum Sacrosciatic Ligament Ischiatic Tuberosity |
| Insertion of the Biceps Femoris | 1) Fascia lata and Patella 2) Lateral Patellar Ligament and Tibial Crest 3) Calcanean Tuber |
| Action of the Biceps Femoris | Extend Hip |
| Innervation of the Biceps Femoris | Caudal Gluteal Nerve Sciatic Nerve |
| Origin of the Semitendinosis | T-processes of Caudal Vertebrae Ventral Surface of Ischiatic Tuberosity |
| Insertion of the Semitendinosis | Medial aspect of the distal end of the crest of Tibia Calcanean Tuber |
| Action of the Semitendinosis | Extend Hip Extend Hock Flex Stifle |
| Innervation of the Semitendinosis | Caudal Gluteal Nerve Sciatic Nerve |
| Origin of the Semimembranosis | Sacrotuberous Ligament Ventral Surface of the Ischiatic Tuberosity |
| Insertion of the Semimembranosis | Medial Epicondyle of the Femur |
| Action of the Semimembranosis | Extend Hip |
| Innervation of the Semimembranosis | Sciatic Nerve |
| Origin of the Gracilis | Pelvic Symphysis |
| Insertion of the Gracilis | Medial Patellar Ligament Medial Surface of Tibia |
| Action of the Gracilis | Adduct Limb |
| Innervation of the Gracilis | Obturator Nerve |
| Origin of the Sartorius | Iliac Fascia Tendon of the psoas minor |
| Insertion of the Sartorius | Medial Patellar Ligament Tibial Tuberosity |
| Action of the Sartorius | Flex Hip Adduct Limb |
| Innervation of Sartorius | Saphenous Nerve |
| Origin of the Pectineus | Cranial Border of Pubis |
| Insertion of the Pectineus | Medial Border of Femur |
| Action of the Pectineus | Flex Hip Adduct Limb |
| Innervation of the Pectineus | Obturator Nerve |
| Origin of the Adductor | Ventral Surface of Pubis and Ischium |
| Insertion of the Adductor | Caudal Surface and Medial Epicondyle of Femur |
| Action of the Adductor | Adduct Thigh |
| Innervation of the Adductor | Obturactor Nerve |
| Origin of the Vastus Medialis | Medial Surface of Femur |
| Insertion of the Vastus Medialis | Patella |
| Action of the Vastus Medialis | Extend Stifle |
| Innervation of the Vastus Medialis | Femoral Nerve |
| Origin of the Vastus Intermedius | Cranial Surface of Femur |
| Insertion of the Vastus Intermedius | Patella |
| Action of the Vastus Intermedius | Extend Stifle |
| Innervation of the Vastus Intermedius | Femoral Nerve |
| Origin of the Vastus Lateralis | Lateral Border of Femur |
| Insertion of the Vastus Lateralis | Patella |
| Action of the Vastus Lateralis | Extend Stifle |
| Innervation of the Vastus Lateralis | Femoral Nerve |
| Origin of the Rectus Femoris | Body of the Ilium |
| Insertion of the Rectus Femoris | Patella |
| Action of the Rectus Femoris | Extend Stifle |
| Innervation of the Rectus Femoris | Femoral Nerve |
| Origin of the Tibialis Cranialis | Lateral Condyle of Tibia Tibial Tuberosity |
| Insertion of the Tibialis Cranialis | 1) Medial Branch = T1+T2 2) Dorsal Branch = T3+MT3 3) Lateral Branch = T4 |
| Action of the Tibialis Cranialis | Flex Tarsus |
| Innervation of the Tibialis Cranialis | Peroneal Nerve |
| Origin of the Peroneus Tertius | Extensor fossa of the Femur (in common with the long digital extensor) |
| Insertion of the Peroneus Tertius | 1) Dorsal Branch = T3 + MT3 2) Lateral Branch = Calcaneus + T4 |
| Action of the Peroneus Tertius | Links the actions of the Stifle and Taral Joints |
| Innervation of the Peroneus Tertius | No contractile function |
| Origin of the Long Digital Extensor | Extensor Fossa of the Femur |
| Insertion of the Long Digital Extensor | Extensor process of P3 Dorsoproximal aspects of P1 and P2 |
| Action of the Long Digital Extensor | Flex Tarsus Extend Stifle Extend Digits |
| Innervation of the Long Digital Extensor | Deep Peroneal Nerve |
| Origin of the Lateral Digital Extensor | Lateral collateral ligament of stifle Lateral Condyle of Tibia |
| Insertional of the Lateral Digital Extensor | Proximal third of Metatarsus |
| Action of the Lateral Digital Extensor | Flex Tarsus |
| Innervation of the Lateral Digital Extensor | Superficial Peroneal Nerve |
| Origin of the Popliteus | Lateral Epicondyle of Femur |
| Insertion of the Popliteus | Caudomedial Border of Tibia |
| Action of the Popliteus | Flex Stifle |
| Innervation of the Popliteus | Tibial Nerve |
| Origin of the Gastrocnemius | Lateral Head: lateral supracondylar tuberosity of Femur Medial Head: medial supracondylar tuberosity of Femur |
| Insertion of the Gastrocnemius | Calcanean Tuberosity |
| Action of the Gastrocnemius | Extend Tarsus Flex Stifle |
| Innervation of the Gastrocnemius | Tibial Nerve |
| Origin of the Superficial Digital Flexor | Supracondylar Fossa of Femur |
| Insertion of the Superficial Digital Flexor | Lateral and Medial aspects of the distal end of P1 Lateral and Medial aspects of proximal end of P2 Calcaneous |
| Action of the Superficial Digital Flexor | Flex Digits Extend Tarsus |
| Innervation of the Superficial Digital Flexor | Tibial Nerve |
| Origin of the Deep Digital Flexor | Caudal aspect of the Tibia |
| Insertion of the Deep Digital Flexor | Plantar Surface of distal Phalanx |
| Action of the Deep Digital Flexor | Flex Digits Extend Tarsus |
| Innervation of the Deep Digital Flexor | Tibial Nerve |
| Origin of the Interosseus | Plantar surface of distal row of tarsal bones Proximal plantar surface of MT3 |
| Insertion of the Interosseus | Proximal sesamoid bones Long extensor tendons |
| Action of the Interosseus | Prevent over extension of fetlock joint |
Created by:
Jacque1417
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