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53 Cards in this Set

  • Front
  • Back

Psoas Major


Origin: Transverse process and vertebral bodies of lumbar vertebrae


Insertion: Lesser trochanter of the femur


Action: Flexes hip joint; lateral rotation of the thigh; flexion of trunk when suppine

Iliacus


Origin: Iliac fossa & sacrum


Insertion:Lesser trochanter of femur


Action: Flex hip & lateral rotation of thigh

Gluteus Maximus


Origin: Iliac crest, sacrum, coccyx, & aponeurosis of sacrospinalis


Insertion: Iliotibial tract, lateral part of linea aspera, & gluteal tuberosity


Action: Extends and laterally rotates thigh at hip joint; locks knee during extension


RMA: Extends torso

Gluteus Minimus


Origin: Ilium


Insertion: Greater trochanter


Action: Abduction & medial rotation of the thigh at the hip joint



Tensor Fasciae Latae


Origin: Iliac crest


Insertion: Tibia (Iliotibial tract)


Action: Flexes and abducts thigh at hip joint

Piriformis


Origin: Anterior sacrum


Insertion: Superior border of greater trochanter


Action: Lateral rotation and abduction of the thigh at hip joint

Obturator Internus


Origin: Inner surface of oburator foramen, pubis, & ischium


Insertion: Medial surface of greater trochanter


Action: Lateral rotation and abduction of the thigh at hip joint

Obturator Externus


Origin: Outer surface of obturator membrane


Insertion: Deep depression inferior to greater trochantor (trochanteric fossa) of femur


Action: Lateral rotation and abduction of the thigh at hip joint

Superior Gemellus


Origin: Ischial spine


Insertion: Medial surface of greater trochanter


Action: Lateral rotation and abduction of the thigh at hip joint

Inferior Gemellus


Origin: Ischial tuberosity


Insertion: Medial surface of greater trochanter


Action: Lateral rotation and abduction of the thigh at hip joint



Quadratus Femoris


Origin: Ischial tuberosity


Insertion: Superior to intertrochanteric crest (posterior femur)


Action: Lateral rotation of the thigh at hip joint; stabilization of hip joint



Adductor Longus


Origin: Pubic crest and pubic symphysis


Insertion: Linea aspera of femur


Action: Adduction, flexion, and rotation of the thigh at hip joint


RMA: Extends thigh at hip joint

Adductor Brevis


Origin: Inferior ramus of pubis


Insertion: Superior half of the linea aspera of the femur


Action: Adduction, flexion, and rotation of the thigh at hip joint


RMA: Extends thigh at hip joint



Adductor Magnus


Origin: Inferior ramus of pubis and ischium to ischial tuberosity


Insertion: linea aspera


Action: Adduction and rotation of the thigh at hip joint. Anterior part flexes thigh; Posterior part extends thigh



Pectineus


Origin: Superior ramus of pubis


Insertion: Between lesser trochanter and linea aspera


Action: Flexion and adduction of the thigh at the hip joint

Gracilis


Origin: Body and inferior ramus of pubis


Insertion: Medial surface of body of tibia


Action: Adducts thigh at hip joint, medially rotates thigh, and flexes leg at knee joint

Rectus Femoris


Origin: Anterior inferior iliac spine


Insertion: Patella (via. quadriceps tendon) and tibial tuberosity (via patellar ligament)


Action: Extend leg at knee. Flexes thigh at hip

Vastus Lateralis


Origin: Greater trochanter and linea aspera of femur


Insertion: Patella (via. quadriceps tendon) and tibial tuberosity (via patellar ligament)


Action: Extend leg at the knee joint

Vastus Medialis


Origin: Linear aspera of femur


Insertion: Patella (via. quadriceps tendon) and tibial tuberosity (via patellar ligament)


Action: Extend leg at the knee joint

Vastus Intermedius


Origin: Anterior and lateral surfaces of the body of the femur


Insertion: Patella (via. quadriceps tendon) and tibial tuberosity (via patellar ligament)


Action: Extend leg at the knee joint

Sattorius (crossing leg over knee)


Origin: Anterior superior iliac spine


Insertion: Medial surface of body of tibia


Action: flexion of leg at knee, and weak flexion, abduction and lateral rotation of the thigh at the hip.



Biceps femoris


Origin:


Long head - ischial tuberosity; short head - linea aspera of femur


Insertion: Fibula head and lateral condyle of fibia

Semitendinosus


Origin: Ischial tuberosity


Insertion: proximal part of medial surface of shaft of tibia


Action: flexes leg at the knee and extends thigh at the hip joint

Semimembranosus


Origin: Ischial tuberosity


Insertion: Medial condyle of tibia


Action: Flexes leg at knee; extends thigh at hip joint

What is the role of the patella?

Increases leverage of the quadriceps femoris muscle; maintains the position of the tendon when the knee is bent; protects the knee joint

Name the joints at the knee

Patellofemoral joint; tibiofemoral joint

What structure connects the tibia and the fibula

An interosseus membrane

Name the joints formed by the tibia and the fibula.

Proximal tibiofibular joint; distal tibiofibular joint

Name the structure that separates the muscle compartments in the leg.

What is the common tendon of the 4 anterior compartment muscles?

Why are the hamstrings extensors of the thigh and flexors of the leg?

Describe the borders of the popliteal fossa.

Tibialis anterior (anterior compartment)


Origin: Lateral condyle and body of the tibia; interosseous membrane


Insertion: Metatarsal I and first cuneiform (medial)


Action: Dorsiflexion of the foot at the ankle. Supination of the foot at the intertarsal joints

Extensor Halluces Longus (anterior compartment)


Origin: Anterior surface of middle of the fibula; interosseous membrane


Insertion: Distal phalanx of big toe


Action: Dorsiflexion of the foot at the ankle, extension of the proximal phalanx of the great toe



Extensor digitorum longus (anterior compartment)


Origin: Lateral condyle of tibia, anterior surface of fibula, interosseous membrane


Insertion: Middle and distal phalanges of toes II-V


Action: Dorsiflexion of the foot at the ankle; extension of the proximal, middle and distal phalanges



Fibularis Tertius (anterior compartment)


Origin: Distal third of fibula, interosseous membrane


Insertion: Base of metatarsal V


Action: Dorsiflexes foot at ankle joint and pronation of the foot at the intertarsal joints.

Fibularis Longus (lateral compartment)


Origin: Head and body of fibula


Insertion: Metatarsal I and first cuneiform


Action: Plantar flexion of the foot at the ankle joint, pronation at the intertarsal joints



Fibularis Brevis (lateral compartment)


Origin: Distal half of body of fibula


Insertion: Base of metatarsal V


Action: Plantar flexion of foot at the ankle joint, pronation at the intertarsal joints



Gastrocnemius (superficial compartment)


Origin: Lateral and medial condyles of femur and capsule of knee


Insertion: Calcaneus (by the achilles/calcaneal tendon)


Action: Plantar flexes foot at ankle and flexion of leg at knee joint

Solues (superficial compartment)


Origin: Head of fibula and medial border of tibia


Insertion: Calcaneus (by the achilles/calcaneal tendon)


Action: Plantar flexes foot at ankle





Plantaris (superficial compartment)


Origin: Lateral epicondyle of femur


Insertion: (by the achilles/calcaneal tendon)


Action: Plantar flexes foot at ankle and flexion of the leg at the knee.

Popliteus (deep compartment)


Origin: Lateral condyle of the femur


Insertion: Proximal tibia


Action: Flexes leg at knee joint and medially rotates tibia to unlock extended knee



Tibialis Posterior (deep compartment)


Origin: Proximal tibia, fibula, interosseous membrane


Insertion: Metatarsals II-IV, navicular, the 3 cuneiforms


Action: Plantar flexion of the foot at the ankle and supination of the foot at the intertarsal joints



Flexor Digitorum Longus (deep compartment)


Origin: Middle third of posterior surface of tibia


Insertion: Distal phalanges of II-V


Action: Plantar flexion of the foot at the ankle, flexion of proximal, middle and distal phalanges



Flexor Hallucis Longus (deep compartment)


Origin: Inferior 2/3rds of the posterior of the fibula


Insertion: Distal phalanx of the great toe


Action: Plantar flexion of the foot at the ankle joint flexion of the proximal and distal phalanges of the big toe

Extensor Retinaculum:


Superior and inferior - hold the tendons of the ankle firmly to the ankle.



Extensor Hallucis Brevis


Origin: Calcaneus and inferior extensor retinaculum


Insertion: Proximal phalanx of big toe


Action: extends big toe at metatarsophalangeal joint.

Extensor Digitorum Brevis


Origin: calcaneus and inferior extensor retinaculum


Insertion: Middle phalanges of toes II-IV


Action: Extension of toes II-V at interphalangeal joints



Abductor Digiti Minimi


Origin: Calcaneus, plantar aponeurosis, and flexor retinaculum


Insertion: Lateral side of proximal phalanx of little toe


Action: Abduction and flexion of the little toe at the metatarsophalangeal joint.



Abductor Hallucis


Origin: Calcaneus, plantar aponeurosis, flexor retinaculum


Insertion: Medial side of proximal phalanx of big toe


Action: Abducts and flexes big toe



Dorsal Interossei


Origin: Adjacent side of all metatarsals


Insertion: Proximal phalanges of both sides of toe II and the lateral sides of toes III-IV


Action: Abduction and flexion of toes II-IV and extension of toes at interphalangeal joints



Adductor hallucis


Origin: Metatarsals of II-IV, ligaments of metatarsals III-V, tendon of fibularis longus


Insertion: Lateral side of proximal phalanx of big toe


Action: Adduction and flexion of big toe at the metatarsophalangeal joint.



Plantar Interossei


Origin: Metatarsals III-V


Insertion: Medial side of proximal phalanges of toes III-V


Action: Adduction and flexion of the proximal metatarsophalangeal joints, and extension of the toes at the interphalangeal joints.