Actions Flashcards
Actions
Rectus Abdominis
Flex vertebral column
Tilt pelvis posteriorly
Actions
External Oblique
Unilaterally:
Laterally flex vertebral column to the same side
Rotate vertebral column to the opposite side
Bilaterally:
Flex the vertebral column
Compress abdominal contents
Actions
Internal Oblique
Unilaterally:
Laterally flex vertebral column to the same side
Rotate vertebral column to the same side
Bilaterally:
Flex the vertebral column
Compress abdominal contents
Actions
Erector Spinae
Unilaterally:
Laterally flex vertebral column to the same side
Bilaterally:
Extend the vertebral column
Actions
Quadratus Lumborum
Unilaterally:
Laterally tilt (elevate) pelvis
Laterally flex the vertebral column to the same side
Assist to extend the vertebral column
Bilaterally:
Fix the last rib during forced inhalation and exhalation
Actions
Gluteus Maximus
All fibers:
Extend coxal joint (hip)
Laterally rotate coxal joint
Abduct coxal joint
Lower fibers:
Adduct coxal joint
Actions
Gluteus Medius
All fibers:
Abduct the coxal joint (hip)
Anterior fibers:
Flex coxal joint
Medially rotate coxal joint
Posterior fibers:
Extend coxal joint
Laterally rotate coxal joint
Actions
Piriformis
Laterally rotate the coxal joint (hip)
Abduct coxal joint when flexed
Actions
Psoas Major
(Iliopsoas)
With the origin fixed:
Flex the coxal joint (hip)
May laterally rotate coxal joint
With the insertion fixed:
Flex the trunk toward the thigh
Tilt pelvis anteriorly
Unilaterally:
Assist to laterally flex the lumbar spine
Actions
Iliacus
(Iliopsoas)
With the origin fixed:
Flex the coxal joint (hip)
May laterally rotate coxal joint
With the insertion fixed:
Flex the trunk toward the thigh
Tilt pelvis anteriorly
Actions
Tensor Fasciae Latae
Flex the coxal joint (hip)
Medially rotate coxal joint
Abduct coxal joint
Actions
Extensor Digitorum
Extend the 2nd thru 5th metacarpophalangeal and interphalangeal joints (fingers)
Assist to extend the radiocarpal joint (wrist)
Actions
Tibialis Posterior
Invert the foot
Plantar flex the talocrural joint (ankle)
Actions
Peroneus Longus
Evert the foot
Assist to plantar flex the talocrural joint (ankle)
Actions
Extensor Digitorum Longus
Extend the 2nd thru 5th metatarsophalangeal and interphalangeal joints (toes)
Dorsiflex the talocrural joint (ankle)
Evert the foot
Actions
Flexor Carpi Radialis
Flex the radiocarpal joint (wrist)
Abduct radiocarpal joint (radial deviation)
May assist to flex the humeroulnar joint (elbow)