Question

Action Muscle Popliteus Synergist Antagonist Flexes and laterally rotates thigh, flexes knee Semitendinosus and semimembranosus Hamstrings, quadriceps, gluteus maximus Gastrocnemius, soleus, plantaris, flexor hallucis longus Adducts and flexes thigh Gastrocnemius, soleus, plantaris, flexor hallucis longus, flexor digitorum longus exkends as Vastus medialis, V. lateralis & v. intermedius Gastrocnemius, soleus, plantaris, tibialis posterior, flexor digitorum longus, fibularis longus Gluteus medius Abducts and medially rotates thigh Extensor digitorum longus, fibularis tertius, tibialis anterior Flexes leg, plantar flexes foot Flexor hallucis longus Flexes and medially rotates thigh, extends and laterally rotates knee

Answer 1

MUSCLE	ACTION	SYNERGIST	ANTAGONIST
popliteus	unlock knee (flexes and internally rotates knee)	sartorius and gracilis and medial hamstrings i.e. semitendinosus and semimembranosus	biceps femoris
Rectus femoris	flexes and laterally rotates thigh and flexes knee	gluteus maximus, piriformis ,obturator internus and externus, superior and inferior gemili	Hamstrings(semitendinosus,semimembranosus, biceps femoris)
semitendinosus and semimembranosus	extension at hip joint , flexion at knee joint and medial rotation at knee joint	biceps femoris ( both long and short head)	quadriceps muscle(all three vasti+ rectus femoris)
Ileo psoas complex	flexion at hip joint	Tensor fascia lata	Hamstrings, quadriceps ,gluteus maximus
flexor digitorum longus	plantar flexion of foot	gastrocnemeus soleus plantaris flexor hallucis longus	Tibialis anterior
Gracilis	adducts and flexes thigh	adductor longus brevis and magnus	gluteus maximus
Tibialis anterior	dorsiflexion of foot	extensor hallucos longus, extensor digitorum longus, peroneus tertius	gastrocnemius soleus plantaris flexor hallucis longus and flexor digitorum longus
vastus medialis vastus lateralis vastus intermedius	extension at knee joint	rectus femoris	gracilis, hamstrings
flexor hallucis longus	planter flexion of foot	gastrocnemius soleus plantaris tibialis posterior, flexor digitorum longus, fibularis longus	Tibialis anterior, extensor hallucis longus,extensor digitorum longus
adductor magnus	adduct thigh	gracilis, adductor brevis and longus obturator externus	gluteus medius
flexor hallucis longus	flexes the great toe of foot	flexor digitorum longus, gastrocnemius ,tibialis posterior	extensor hallucis longus, extensor digitorum longus