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Anatomy Unit 5

Coordination among muscles

TermDefinition
prime mover "leader;" contracts to cause an action
antagonist "against;" stretches and yields to effects of the prime mover
Adductor Magnus, adductor longus, adductor brevis, pectine, gracilis 5 major muscles that adduct thigh
pubis and ischium (includes ischial tuberosity) Adductor magnus-origin
linea aspera and adductor tubercle of femur adductor Magnus-insertion
adducts and medially rotates thigh; anterior part flexes, posterior part extends thigh adductor magnus-action
obturator and sciatic nerves (only adductor with sciatic supply) adductor Magnus-innervation
pubic crest and pubic symphysis adductor longus-origin
linea aspera of femur adductor longus-insertion
adducts, medially rotates, flexes thigh at hip adductor longus-action
obturator nerve adductor longus-innervation
inferior ramus of pubis adductor brevis-origin
upper part of linea aspera of femur adductor brevis-insertion
adducts, medially rotates, flexes thigh at hip adductor brevis-action
obturator nerve adductor brevis-innervation
superior ramus of pubis pectineus-origin
pectineal line of femur (between lesser trochanter and linea aspera) pectineus-insertion
adducts and flexes thigh at hip pectineus-action
femoral nerve (only adductor supplied by femoral nerve) sometimes also obturator pectineus-innervation
body and inferior ramus of pubis gracilis-origin
medial surface of tibia gracilis-insertion
adducts an medially rotates thigh at hip; flexes leg at knee gracilis-action
obturator nerve gracilis-innervation
gracilis only adductor that crosses the knee
rectus femoris, vastus lateralis, vastus intermedius, vastus medialis 4 muscles of quadriceps
anterior inferior iliac spine (ilium) rectus femoris-origin
patella via quadricep tendon, then tibial tuberosity via patellar ligament rectus femoris-insertion
flexes thigh at hip rectus femoris-action
femoral nerve rectus femoris-innervation
greater trochanter and linea aspera of femur vastus lateralis-origin
patella via quadricep tendon then tibial tuberosity via patellar ligament vastus lateralis-insertion
extend leg at knee vastus lateralis-action
femoral nerve vastus lateralis-innervation
anterior and lateral surfaces of femur vastus intermedius-origin
patella via quadricep tendon then tibial tuberosity via patellar ligament vastus intermedius-insertion
extend leg at knee vastus intermedius-action
femoral nerve vastus intermedius-innervation
intertrochanteric line and linea aspera of femur vastus medialis-origin
patella via quadricep tendon then tibial tuberosity via patellar ligament vastus medialis-insertion
extend leg at knee vastus medialis-action
femoral nerve vastus medialis-innervation
biceps femoris (long and short heads), semitendinosus, semimembranosus 3 muscles of hamstrings
long head: ischial tuberosity short head: linea aspera of femur biceps femoris-origin
head of fibula and lateral condyle of tibia biceps femoris-insertion
extends thigh at hip; flexes leg at knee biceps femoris-action
sciatic nerve long head: tibial short head: common fibular biceps femoris-innervation
ischial tuberosity semimembranosus-origin
medial condole of tibia semimembranosus-insertion
extends thigh at hip and flexes leg at knee semimembranosus-action
sciatic nerve semimembranosus-innervation
ischial tuberosity semitendinosus-origin
proximal medial surface of tibia semitendiosus-insertion
extend thigh at hip and flex leg at knee semitendinosus-action
sciatic nerve semitendinosus-innervation
Created by: auweb921
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