Kinesiology Flashcards
Actions
Rectus Abdominis
Flex vertebral column
Tilt pelvis posteriorly
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
Tensor Fasciae Latae
Flex the coxal joint (hip)
Medially rotate coxal joint
Abduct coxal joint
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
Flex vertebral column
Tilt pelvis posteriorly
Rectus Abdominis
Actions
Unilaterally:
Laterally flex vertebral column to the same side
Bilaterally:
Extend the vertebral column
Erector Spinae
Actions
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
Quadratus Lumborum
Actions
All fibers:
Extend coxal joint (hip)
Laterally rotate coxal joint
Abduct coxal joint
Lower fibers:
Adduct coxal joint
Gluteus Maximus
Actions
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
Gluteus Medius
Actions
Laterally rotate the coxal joint (hip)
Abduct coxal joint when flexed
Piriformis
Actions
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
Psoas Major
(Iliopsoas)
Actions
Flex the coxal joint (hip)
Medially rotate coxal joint
Abduct coxal joint
Tensor Fasciae Latae
Actions
Invert the foot
Plantar flex the talocrural joint (ankle)
Tibialis Posterior
Actions
Evert the foot
Assist to plantar flex the talocrural joint (ankle)
Peroneus Longus
Origins
Rectus Abdominis
Pubic Crest
Pubic Symphysis
Origins
Erector Spinae
Common tendon (thoracolumbar aponeurosis) that attaches to the posterior surface of sacrum
Iliac crest
Spinous processes of the lumbar and last two thoracic vertebrae
Origins
Quadratus Lumborum
Posterior Iliac Crest
Origins
Gluteus Maximus
Coccyx
Edge of sacrum
Posterior iliac crest
Sacrotuberus ligament
Sacroiliac ligament