גף תחתון טבלת שרירים Flashcards
Abductor digiti
minimi
muscle group: Foot innervation: Lateral plantar nerve main actions: Abducts and flexes 5th digit
Abductor hallucis
muscle group: Foot innervation: Medial plantar nerve main actions: Abducts and flexes 1st digit
Adductor brevis
muscle group: Medial thigh
innervation: Obturator nerve
main actions: Adducts thigh at hip,
weak hip flexor
Adductor hallucis
muscle group: Foot innervation: Deep branch of lateral plantar nerve main actions: Adducts 1st digit, maintains transverse arch of foot
Adductor longus
muscle group: Medial thigh innervation: Obturator nerve (anterior division) main actions: Adducts thigh at hip
Adductor magnus
muscle group: Medial thigh innervation: Adductor part: obturator nerve Hamstring part: sciatic nerve (tibial division) main actions: Adductor part: adducts and flexes thigh Hamstring part: extends thigh
Articularis genus
muscle group: Anterior thigh innervation: Femoral nerve main actions: Pulls suprapatellar bursa superiorly with extension of knee
Biceps femoris
muscle group: Posterior thigh innervation: Long head: sciatic nerve (tibial division) (L5–S2) Short head: sciatic nerve (common fibular division) main actions: Flexes and laterally rotates leg, extends thigh at hip
Dorsal interossei (four muscles)
muscle group: Foot innervation: Lateral plantar nerve main actions: Abduct 2nd through 4th digits of foot, flex metatarsophalangeal joints, and extend phalangeal bones
Extensor digitorum
brevis and
extensor hallucis
brevis
muscle group: Foot innervation: Deep fibular nerve main actions: Aids extensor digitorum longus in extending of 4 medial digits at metatarsophalangeal and interphalangeal joints
Extensor digitorum
longus
muscle group: Anterior leg innervation: Deep fibular nerve main actions: Extends lateral four digits and dorsiflexes foot at ankle
Extensor hallucis
longus
muscle group: Anterior leg innervation: Deep fibular nerve main actions: Extends great toe, dorsiflexes foot at ankle
Fibularis brevis
muscle group: Lateral leg innervation: Superficial fibular nerve main actions: Everts foot and weakly plantarflexes foot at ankle
Fibularis longus
muscle group: Lateral leg innervation: Superficial fibular nerve main actions: Everts foot and weakly plantarflexes foot at ankle
Fibularis tertius
muscle group: Anterior leg innervation: Deep fibular nerve main actions: Dorsiflexes foot at ankle and aids in eversion of foot
Flexor digiti minimi
brevis
muscle group: Foot innervation: Superficial branch of lateral plantar nerve main actions: Flexes proximal phalanx of 5th digit
Flexor digitorum
brevis
muscle group: Foot innervation: Medial plantar nerve main actions: Flexes 2nd through 5th digits
Flexor digitorum
longus
muscle group: Posterior leg innervation: Tibial nerve main actions: Flexes lateral four digits and plantarflexes foot at ankle; supports longitudinal arches of foot
Flexor hallucis brevis
muscle group: Foot innervation: Medial plantar nerve main actions: Flexes proximal phalanx of 1st digit
Flexor hallucis longus
muscle group: Posterior leg innervation: Tibial nerve main actions: Flexes all joints of great toe, weakly plantarflexes foot at ankle
Gastrocnemius
muscle group: Posterior leg innervation: Tibial nerve main actions: Plantarflexes foot at ankle joint, assists in flexion of knee joint
Gluteus maximus
muscle group: Gluteal region innervation: Inferior gluteal nerve main actions: Extends flexed thigh, assists in lateral rotation, and abducts thigh
Gluteus medius
muscle group: Gluteal region innervation: Superior gluteal nerve main actions: Abducts and medially rotates thigh at hips; steadies pelvis on leg when opposite leg is raised
Gluteus minimus
muscle group: Gluteal region innervation: Superior gluteal nerve main actions: Abducts and medially rotates thigh at hips; steadies pelvis on leg when opposite leg is raised
Gracilis
muscle group: Medial thigh innervation: Obturator nerve main actions: Adducts thigh, flexes and medially rotates leg
Iliacus (iliopsoas)
muscle group: Anterior thigh innervation: Femoral nerve main actions: Flexes thigh at hips and stabilizes hip joint, acts with psoas major
Inferior gemellus
muscle group: Gluteal region innervation: Nerve to quadratus femoris muscle main actions: Laterally rotates extended thigh and abducts flexed thigh
Lumbricals
muscle group: Foot innervation: Medial one: medial plantar nerve Lateral three: lateral plantar nerve main actions: Flexes proximal phalangeal bones at metatarsophalangeal joint, extends phalangeal bones at proximal interphalangeal and distal interphalangeal joints
Obturator externus
muscle group: Medial thigh innervation: Obturator nerve main actions: Laterally rotates thigh, stabilizes head of femur in acetabulum
Obturator internus
muscle group: Gluteal region innervation: Nerve to obturator internus muscle main actions: Laterally rotates extended thigh, abducts flexed thigh at hip
Pectineus
muscle group: Medial thigh innervation: Femoral nerve and sometimes obturator nerve main actions: Adducts and flexes thigh at hip
Piriformis
muscle group: Gluteal region innervation: Ventral rami of L5, S1, S2 main actions: Laterally rotates extended thigh, abducts flexed thigh at hip
Plantar interossei (three muscles)
muscle group: Foot innervation: Lateral plantar nerve main actions: Adduct digits (3-5) and flex metatarsophalangeal joint and extend phalangeal bones
Plantaris
muscle group: Posterior leg
innervation: Tibial nerve
main actions: Weakly assists
gastrocnemius
Popliteus
muscle group: Posterior leg innervation: Tibial nerve (L4–S1) main actions: Weakly flexes knee and unlocks it by rotating femur on fixed tibia
Psoas major
iliopsoas
muscle group: Anterior thigh innervation: Anterior rami of first three lumbar nerves main actions: Acting superiorly with iliacus, flexes hip; acting inferiorly, flexes vertebral column laterally; used to balance trunk in sitting position; acting inferiorly with iliacus, flexes trunk
Quadratus femoris
muscle group: Gluteal region innervation: Nerve to quadratus femoris muscle main actions: Laterally rotates thigh at hip
Quadratus plantae
muscle group: Foot innervation: Lateral plantar nerve main actions: Corrects for oblique pull of flexor digitorum longus tendon, thus assisting in flexion of digits of foot
Rectus femoris
quadriceps
muscle group: Anterior thigh innervation: Femoral nerve main actions: Extends leg at knee joint and flexes thigh at hip joint
Sartorius
muscle group: Anterior thigh innervation: Femoral nerve main actions: Abducts, laterally rotates, and flexes thigh; flexes knee joint
Semimembranosus
muscle group: Posterior thigh innervation: Sciatic nerve (tibial division) main actions: Flexes leg, extends thigh
Semitendinosus
muscle group: Posterior thigh innervation: Sciatic nerve (tibial division) main actions: Flexes leg, extends thigh
Soleus
muscle group: Posterior leg innervation: Tibial nerve main actions: Plantarflexes foot at ankle, stabilizes leg over foot
Superior gemellus
muscle group: Gluteal region innervation: Nerve to obturator internus muscle main actions: Laterally rotates extended thigh and abducts flexed thigh
Tensor fasciae latae
muscle group: Gluteal region innervation: Superior gluteal nerve main actions: Abducts, medially rotates, and flexes thigh at hip; helps to keep knee extended
Tibialis anterior
muscle group: Anterior leg innervation: Deep fibular nerve main actions: Dorsiflexes foot at ankle and inverts foot
Tibialis posterior
muscle group: Posterior leg innervation: Tibial nerve main actions: Plantarflexes foot at ankle and inverts foot
Vastus intermedius (quadriceps)
muscle group: Anterior thigh
innervation: Femoral nerve
main actions: Extends leg at knee
joint
Vastus lateralis
quadriceps
muscle group: Anterior thigh
innervation: Femoral nerve
main actions: Extends leg at knee
joint
Vastus medialis
quadriceps
muscle group: Anterior thigh
innervation: Femoral nerve
main actions: Extends leg at knee
joint