Anatomy Test 9 (Muscular System 5 Actions)
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31 Terms
What are the actions of the psoas major and iliacus?
The psoas major and iliacus muscles acting together flex the thigh at the hip joint, rotate the thigh laterally, and flex the trunk on the hip as in sitting up from the supine position
What is the action of the gluteus maximus?
It extends and laterally rotates the hip joint
What is the action of the gluteus medius?
It abducts and medially rotates the hip joint
What is the action of the gluteus minimus?
It abducts and medially rotates the hip joint
What is the action of the tensor fasciae latae?
It flexes and abducts the hip joint
What is the action of the quadratus femoris?
It laterally rotates and stabilizes the hip joint
What is the action of the adductors longus?
It adducts and flexes the thigh at the hip joint and rotates the thigh
What is the action of the adductor brevis?
It adducts and flexes the thigh at the hip joint and rotates the thigh
What is the action of the adductor magnus?
It adducts the thigh at the hip joint and rotates the thigh
The anterior part flexes the thigh at the hip joint, and the posterior part extends the thigh at the hip joint
What is the action of the pectineus?
It flexes and adducts the thigh at the hip joint
What is the action of the gracilis?
It adducts the thigh at the hip joint, medially rotates the thigh, and flexes the leg at the knee joint
What is the action of the rectus femoris?
Alone, it flexes the thigh at the hip joint
Working with the other quadriceps muscles it extends the leg at the knee joint
What is the action of the vastus lateralis?
It works together with the other muscles of the quadriceps to extend the leg at the knee joint
What is the action of the vastus medialis?
It works together with the other quadriceps muscles to extend the leg at the knee joint
What is the action of the vastus intermedius?
It works together with the other quadriceps muscles to extend the leg at the knee joint
What is the action of the sartorius?
It weakly flexes the leg at the knee joint, weakly flexed, abducts, and laterally rotates the thigh at the hip joint
What is the action of the biceps femoris?
It flexes the leg at the knee joint and extends the thigh at the hip joint
What is the action of the semitendinosus?
It flexes the leg at the knee joint and extends the thigh at the hip joint
What is the action of the semimembranosus?
It flexes the leg at the knee joint and extends the thigh at the hip joint
What is the action of the tibialis anterior?
It dorsiflexes the foot at the ankle joint and inverts (supinates) the foot at the intertsrsal joints
What is the action of the extensor hallicus longus?
It dosriflexes the foot at the ankle joint and it extends the prximal phalanx of the great toe at the metatarsophalangeal joint
What is the action of the extensor digitorum longus?
It dorsiflexes the foot at the ankle joint and extends the distal and middle phalanges of each toes at the interphalangeal joints and proximal phalanx at the metatarsophalangeal joints
What is the action of the fibularis longus
It plantar flexes the foot at the ankle joint and everts the foot at the intertarsal joints
What is the action of the fibularis brevis?
It plantar flexes the the foot at the ankle joint and everts (pronates) the foot at the intertarsal joints
What is the action of the gastrocnemius?
It plantar flexes the foot at the ankle joint and flexes the leg at the knee joint
What is the action of the soleus?
It plantar flexes the foot at the ankle joint
What is the action of the plantaris?
It plantar flexes the foot at the ankle joint and flexes the leg at the knee joint
What is the action of the popliteus?
It flexes the leg at the knee joint and medially rotates the tibia to unlock the extended knee
What is the action of the tibialis posterior/
It plantar flexes the foot at the ankle joint and inverts (supinates) the foot at the intertarsal joints
What is the action of the flexor digitorum longus?
It plantar flexes the foot at the ankle joint, flexes the distal and middle phalanges of each toe at the interphalangeal joints and the proximal phalanx of each ftoe at the metatarsophalangeal joints
What is the action of the flexor hallucis longus?
It plantar flexes the foot at the ankle joint, flexes the distal phalanx of the great toe at the interphalangeal joints, and the proximal phalanx of the great toe at the metatarsophalangeal joints.