51 terms

Lab 10 Inferior Limb Myology

STUDY
PLAY
ANTERIOR MUSCLES OF THE HIP
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Iliopsoas m.
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Iliacus m.
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Psoas major m. O: iliac fossa;(psoas major m.)-bodies of vertebrae T12-L5
I: Lesser trochanter and adjacent body of the femur bone.
A: Flex coxal joint, rotate thigh laterally (externally)
POSTERIOR AND LATERAL MUSCLES OF THE HIP
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Gluteus maximus m. O: bony sacrum, iliac crest, coccyx
I: proximolaeral aspect of femoral body and iliotibial tract (see tensor fascia latae m.)
A: extend coxal joint, rotate thigh laterally (externally), some adduction of limb at coxal joint.
Gluteus medius m. O: Gluteal surface of ilium.
I: greater trochanter of femur bone.
A: abduct limb at coxa joint, rotate thigh laterally (externally)
Gluteus minimus m. O:gluteal surface of ilium (between anterior and inferior gluteal lines.)
I: greater trochanter of femur bone (anterior surface)
A: Abduct limb at coxal joint.
Tensor fascia latae m.
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Fascia lata
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Iliotibial tract O: anterior superior iliac spine (and nerby ilium)
I: Lateral condyle of the tibia (via the iliotibial tract)
A: Flex coxal joint, abduct limb at coxal joint
Medial muscles of the hip
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ANTERIOR MUSCLES OF THE THIGH
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Sartorius m. O: Anterior superior iliac spine
I: medial aspect of the tibial tuberosity.
A: Flex coxal joint, rotate limb laterally (externally), flex genual joint
Quadiceps femoris m. O:
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Rectus femoris m. O: Anterior iliac spine
I: Tibial tuberosity (via patella and patellar ligament)
A: Flex coxal joint, extend genual joint
Vastus lateralis m. O:lateral aspect of body of femur bone
I: Tibial tuberosity (via patella and patellar ligament)
A:extend genual joint
Vastus medialis m. O: medial aspect of body of femur bone
I: Tibial tuberosity (via patella and patellar ligament)
A:extend genual joint
Vastus intermedius m. O:Anterior aspect of body of femur bone
I: Tibial tuberosity (via patella and patellar ligament)
A: extend genual joint
POSTERIOR MUSCLES OF THE THIGH
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Biceps femoris m.
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Long head of the biceps femoris m. O: Ischiatic tuber
I: Head of fibula, lateral condyle of tibia
A: Extend coxal joint, Flex genual joint, rotate limb laterally (externally)
Short head of the biceps femoris m. O: lateral lip of linea aspera of the femur bone
I: Head of fibula, lateral condyle of tibia
A:Flex genual joint, rotate limb laterally (externally)
Semitendinosus m. O: Ischiatic tuber
I: Medial aspect of the proximal part of the tibial body
A: Extend the coxal joint, flex genual joint, rotate limb medially (internally)
Semimembranosus m. O: Ischiatic tuber
I: medial condyle of the tibia (posterior aspect)
A: Extend coxal joint, flex genual joint, rotate limb medially (internally)
MEDIAL MUSCLES OF THE THIGH
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Gracilis m. O: Inferior ramus of pubis
I:medial aspect of proximal part of tibial body
A: Adduct limb at coxal joint, flex genual joint, rotate limb medially (internally)
Pectineus m. O:Pecten of pubis
I: proximal end of posterior aspect of femoral body (below lesser trochanter)
A: Adduct limb at coxal joint, flex coxal joint.
Adductor longus m. O: Pubic symphysis and adgacent body of pubis
I: middle third of medial lip of linea apsera of femur bone
A: adduct limb at coxal joint.
Adductor brevis m. O: Inferior ramus of pubis
I: medial lip of linea apsera of femur bone (superior part)
A: Adduct limb at coxal joint
Adductor magnus m. O: Ischiatic tuber, inferior ramus of pubis, ramus of ischium
I: Linea aspera and adductor tubercle of femur bone
A: Adduct limb at coxal joint, extend coxal joint.
Adductor minimus m.
basically the proximal aspect of the adductor magnus m.
ANTEROLATERAL MUSCLES OF THE CRUS
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Anterior tibial m. O: Proximal tibia and crural interosseous membrane
I: Medial cuniform bone and first metatarsal bone
A: Flex (dorsiflex) the talocrural joint and invert the foot
Long digital extensor m. O: Lateral condyle of tibia, proximal fibula, and crural interosseous membrane.
I: Distal phalanges of digits 2-5
A: Flex (dorsiflex) talocrural joint, extend digital joints of digits 2-5
Extensor hallucis longus m. O: Middle of fibula and crural interosseous membrane
I: Base of distal phalanx of big toe
A: Extend digital joints of big toe, flex(dorsiflex) talocrural joint
Peroneus longus m. O: Proximal third of fibula
I: Medial cuneiform bone and base of first metatarsal bone
A: Extend (plantar flex) talocrural joint, evert pes.
Peroneus brevis m. O: Distal half of fibula (lateral aspect)
I: dorsum of base of fifth metatarsal bone
A: evert pes, extend (plantar flex) the talocrural joint
Peroneus tertius m. O: lower third of body of fibula
I: Dorsum of base of fifth metatarsal bone
A: Flex (dorsiflex) the talocrural joint, evert pes
POSTERIOR MUSCLES OF THE CRUS
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Gastrocnemius m.
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Medial head of the gastrocnemius m. O:
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Lateral head of the gastrocnemius m.
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calcanean/calcaneal tendon O: distal posterior femur bone just above medial and lateral condyles.
I: Tuber calcanei
A: Extend (plantar flex) talocrural joint, flex genual joint.
Soleus m.
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Triceps surae m. O: Proximal, posterior tibia, and fibula
I: Tuber calcanei
A: Extend (plantar flex) talocrural joint.
Plantaris m. O: Lateral epicondyle of femur bone (posterior edge thereof)
I: Tuber calcanei
A: Extend (plantar flex) talocrural joint
Popliteus m. O: Lateral epicondyle of femur bone.
I: Posterior aspect of tibia above line of soleus muscle
A: Flex genual joint, rotate crus mediall (internally)
Flexor hallucis longus m. O: Distal two thirds of fibula (and crural interosseous membrane)
I: Base of distal phalanx of first digit
A: flex digital joint of first digit, invert the pes.
Flexor digitorum longus m. O: Tibia (middle third of posterior surface)
I: Distal phalanges of digits 2-5
A: flex digital joints of minor toes, extend (plantar flex) talocrural joint
Posterior tibial m. O: Posterior aspect of the tibia and fibula
I: tarsal bone (except talus) and metatarsal bones 2-4
A: Extend (plantar flex) talocrural joint, invert pes