anatomy 2 Flashcards
Iliopsoas
origin: transverser processes of L2-L3, vertebral ends of last 2 ribs, and sacropelvic part of the ilium.
insertion: lesser trochanter
nerve: ventral branches of spinal nerves
action: flexor and supinator of hip, flexes lumbar column
tensor fascia latae
origin: tuber coxae
insertion: fascia lata
nerve: cranial gluteal
action: flexes hip, extends stifle, protracts pelvic limb
superficial gluteus
origin: sacrum, Cd1 vertebra, sacrotuberous ligament
insertion: third trochanter
nerve: caudal gluteal
action: extension
middle gluteus
origin: gluteal surface and wing of the ilium
insertion: greater trochanter
nerve: cranial gluteal
action: extension of the hip, abduction of limb
deep gluteus
origin: gluteal surface of ilium
insertion: greater trochanter
nerve: cranial gluteal
action: extension of hip, abduction of limb
piriformis
origin: sacrum and sacrotuberous ligament
insertion: greater trochanter
nerve: caudal gluteal
action: extension of hip, abduction of limb
gemelli
origin: lesser ischiatic notch
insertion: trochanteric fossa of femur
nerve: sciatic
action: supinator, rotates femur outward
internal obturator
origin: intrapelvic borders surrounding obturator foramen.
insertion: trochanteric fossa of the femur
nerve: sciatic
action: abductor, rotates femur outward
external obturator
origin: outer margins of obturator foramen.
insertion: trochanteric fossa of femur
nerve: obturator
action: supinator of the femur, adductor of the pelvic limb
sartorius
origin: cranial belly= iliac crest; caudal belly= tuber coxae
insertion: patella via fascia, cranial border of the tibia
nerve: femoral
action: extensor of the stifle, flexor of the stifle (caudal), and flexor of the hip
quadriceps femoris= vastus medialis, vastus lateralis, vastus intermedius, and rectus femoris
origin: femur= craniomedial, femur= craniomedial, femur=craniolateral, ilium= cranial to the acetabulum.
insertion: tibial tuberosity via the patellar ligament
nerve: femoral
action: extension of the stifle, flexion of the hip.
biceps femoris
origin: ischiatic tuberosity, sacrotuberous ligament
insertion: patellar ligament, cranial border of the tibia, calcanean tuberosity.
nerve: caudal gluteal, sciatic, tibial
action: extensor of the hip and stifle, flexor of the stifle, extensor of the tarsus, and abductor of the limb.
abductor cruris caudalis
origin: sacrotuberous ligament
insertion: crural fascia
nerve: sciatic
action: abductor
semitendinosus
origin: ischiatic tuberosity
insertion: tibia- proximomedial surface, calcanean tuberosity
nerve: tibial
action: extensor of the hip joint, flexor of the stifle, extensor of the tarsus,
semimembranosus
origin: ischiatic tuberosity
insertion: medial condyle of the femur and tibia
nerve: tibial
action: extensor of the hip and flexor of the stifle.
gracilis
origin: pelvic symphysis
insertion: cranial tibial border, calcanean tuberosity
nerve: obturator
action: adductor, extension of the stifle
pectineus
origin: iliopubic eminence
insertion: medial lip of the femur
nerve: obturator
action: adduction
adductor magnus and adductor brevis
origin: pelvic symphysis/ventral pubic tubercle
insertion: lateral lip of the femur/proximal femur
nerve: obturator
action: adduction
quadratus femoris
origin: ventromedial to the ischiatic tuberosity
insertion: distal to the trochanteric fossa of the femur
nerve: sciatic
action: supinator of the femur, extensor of the hip
cranial tibial
origin: lateral aspect of cranial border of the tibia
insertion: base of Mt 1, 2 and the plantar surface
nerve: deep fibular
action: flex the tarsus and supinate the pes
long digital extensor
origin: lateral epicondyle of the femur
insertion: distal phalanx of each digit
nerve: deep fibular
action: extensor of the digits and flexor of the tarsus
fibularis longus
origin: lateral condyle of the tibia, head of the fibula
insertion: extensor process of the distal phalanx, digit 5
nerve: deep fibular
action: flexor of the tarsus, pronator of the pes
lateral digital extensor
origin: proximal fibula, lateral collateral ligament fo the stifle
insertion: extensor process of distal phalanx, digit 5
nerve: superficial fibular
action: extensor of digit 5
fibularis brevis
origin: distal surface of the fibula
insertion: base of Mt. 5
nerve: superficial fibular
action: flexor of the tarsus
gastrocnemius
origin: lateral and medial supracondylar tuberosities of the femur
insertion: calcanean tuberosity
nerve: tibial
action: extensor of the tarsus, flexor of the stifle
SDF
origin: lateral supracondylar tuberosity of the femur
insertion: plantar aspect of the middle phalanges of digits II-V
nerve: tibial
action: extensor of the tarsus, flexor of the digits
DDF
origin: proximocaudal surface of the tibia and fibula
insertion: plantar aspect of distal phalanges of digits II-V
nerve: tibial
action: extensor of the tarsus, flexor of the digits
popliteus
origin: lateral condyle of the femur
insertion: proximomedial aspect of the tibia
nerve: tibial
action: flexor of the stifle, pronator of the distal limb
interossei
origin: plantar proximal aspect of Mt 2-5
insertion: P1 of digits 2-5
nerve: tibial
action: flexors of metotarso-phalangeal joints
extensor digitorum brevis
origin: distal surface of the tarsus
insertion: dorsal surface of the proximal phalanges of digits II-V
nerve: fibular
action: extensor of the metotarso-phalangeal joints
