Muscles 3.2 Flashcards
Innervation of gluteus maximus?
Inferior gluteal nerve
Action of the gluteus maximus?
Extends the thigh from flexed position -sit to stand position (NOT walking)
Blood supply of gluteus maximus?
Both superior and inferior gluteal artery
Action of tensor facia lata?
Flexes the thigh and stabilized the knee joint AS WELL as abduct and medial rotate the thigh
What are the actions of gluteus medius and minimus and tensor facia lata?
Abducts and medially rotate thigh; keep pelvis level when ipsilateral limb is weight-bearing
Innervation of deep gluteal muscles?
Anterior rami L4-S2
What is the action of deep gluteal muscles?
Laterally rotate the EXTENDED thigh and abducts flexed thigh
Innervation of pectineus?
Femoral
Action of pectineus?
Adducts and flexes thigh
Innervation of iliopsoas?
L1-L2
Action of iliopsoas?
Flexes thigh
Innervation of sartorius?
Femoral
Action of sartorius?
Flexes, abducts thigh, flexes leg
Innervation of quadriceps femoris?
Femoral
Action of quadriceps femoris?
PRIMARY extender leg at knee, some flexion of hip,
Action of semimembranosus and semitendinosus?
Extend thigh, flex leg and rotate it medially
Action of biceps femoris?
Extend thigh, flex leg and rotate laterally
Innervation of semimembranosus, semitendinosus, and biceps femoris?
Sciatic nerve
Tibiais anterior and digit extensors of leg are innervated by?
Deep fibular nerve
Action of tibilais anterior?
Dorsiflex and invert foot
Action of digit extensors of leg?
Extend toes and dorsiflexes ankle
Innervation of fibularis longus and brevis of leg?
Superficial fibular nerve
Action of fibularis longus and brevis of leg?
Evert foot
All the muscles of the posterior leg are innervated by?
Tibial nerve
Action of Gastrocnemius?
Raises heel during walking, flexes leg
Action of soleus?
Plantarflexes ankle
Action of popliteus?
Unlocks knee when walking (locks when standing)
Action of leg digit flexors?
Flexes digits (curls toes)
Action Tibilais posterior?
Plantarflexes ankle
