Muscles of the Manus Flashcards
Tensor faciae latae
Origin: tuber coxae
Termination: fascia latae
Action: tense the fascia lata
(flex the coxal joint and extend the genual joint)
Superficial gluteal
Origin: sacrotuberous ligament
Termination: third trochanter of the femur
Action: abduct the limb
Middle gluteal
Origin: gluteal surface of ilium
Termination: greater trochanter of the femur
Action: extend the coxal joint; abduct the limb
Piriformis
Origin: sacrum and first caudal vertebra
Termination: greater trochanter
Action: extend the coxal joint
Deep gluteal
Origin: body of ilium and ischiatic spine
Termination: greater trochanter
Action: abduct the limb and extend the coxal joint
External obturator
Origin: ventral aspect of os coxae around obturator of humerus
Termination: trochanteric fossa
Action: adduct and/or rotate the limb laterally at the coxal joint
Internal obturator
Origin: dorsal aspect of os coxae around obturator foramen
Termination: trochanteric fossa
Action: rotate the limb laterally at the coxal joint
Quadratus femoris
Origin: ventral aspect of ischium
Termination: caudal femur near the trochanteric fossa
Action: extend coxal joint; adduct and/or rotate the limb laterally at the coxal joint
Biceps femoris
Origin: ischiatic tuberosity
Termination: tibia and tuber calcanei
Action: extend coxal joint; variable action on genual joint; extend the tarsocrural joint
Semitendenosus
Origin: ischiatic tuberosity
Termination: tibia and tuber calcanei
Action: extend coxal joint; variable action on the genual joint; extend tarsocrural joint
Semimembranosus
Origin: ischiatic tuberosity
Termination: distal femur and proximal tibia
Action: extend coxal joint: variable action on genual joint
Sartorius
Cranial and caudal bellies!
Origin: crest of ilium
Termination: medial aspect of genual region
Action: flex coxal joint, extend(cr) or flex (cd) genual joint
Gracilis
Origin: pelvic symphasis
Termination: medial aspect of genual region
Action: adduct the limb, extend coxal joint, flex genual joint, extend tarsocrural joint
Pectineus
Origin: iliopubic eminence
Termination: distal body of femur
Action: adduct the limb
Adductor
Origin: vental surface of os coxae
Termination: caudal surface of femur
Action: adduct the limb and extend the coxal joint
Quadriceps femoris
(rectus femoris, vastus lateralis, vastus intermedius, vastus medialis)
Origin: rectus femoris- ilium
other 3 heads: proximal femur
Termination: tibial tuberosity
Action: flex coxal joint (rectus femoris)
extend genual joint (all heads)
Iliopsoas
Origin (don’t have to know)
Termination: lesser trochanter
Action: flex coxal joint
Cranial tiial
Origin: lateral aspect of proximal tibia
Termination: plantar base of metatarsal bones 1 and 2
Action: flex tarsocrural joint
Long digital extensor
Origin: extensor fossa of femur
Termination: extensor process of distal phalanges
Action: extend the genual joint; flex tarsocrural joint; extend digital joints
Lateral digital extensor
Origin (N/A)
Termination: lateral digits (4,5)
Action: flex the tarsocrural joint; extend digital joints
Peroneus longus
Origin: lateral collateral ligament of genual joint
Termination: 4th tarsal bone and planar base of metatarsal bones
Action: flex tarsocrural joint
Gastrocnemius
(medial and lateral heads)
Origin: distal caudal femur
Termination: tuber calcanei of calcaneous
Action: flex genual joint; extend tarsocrural jont
Superficial digital flexor
Origin: femur
Termination: tuber calcanei and bases of middle phalanges
Action: flex genual joint; extend tarsocrural joint; flex metatarsophalangeal and proximal interphalangeal joints
Deep digital flexor
(medial and lateral heads)
Origin: proximal caudal aspect of tibia and fibula
Termination: flexor tubercle of distal phalanges
Action: extend the tarsocrural joint; flex digital joint
