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LE muscles and their actions
LE muscles and their actions
51
Anatomy
Graduate
07/26/2010

Additional Anatomy Flashcards

 


 

Cards

Term
Posas Major
Definition

> Hip flexion (origin fixed) 

> Trunk flexion (insertion fixed; as in sit-up)

 

> Assist: lateral trunk flexion (uni-lateral) 

> May assist hip ER & ABD

> Insertion fixed: tightness contributes to increase lordosis

Term
Posas Minor 
Definition
> Flexion of trunk & lumbar spine
Term
Iliacus
Definition

> Hip flexion 

> Flexes pelvis on femur

Term
Pectineus
Definition

> Hip adduction

 

> Assist: hip flexion

Term
Gracilis
Definition

> Hip adduction 

> Knee flexion

> IR of knee

Term
Adductor Longus
Definition

> Hip adduction 

 

> Assist: hip flexion

Term
Adductor Brevis 
Definition

> Hip adduction 

> Hip flexion

Term
Adductor Magnus 
Definition

> Hip adduction 

 

> May assist hip extension and flexion

> Role in hip rotation depends on thigh position 

Term
Gluteus Maximus 
Definition

> Hip extension 

> Hip ER

 

> Lower Fibers: assist hip ADD

> Upper Fibers: assist hip ABD

> Thru IT band stabilizes knee

Term
Gluteus Medius
Definition

> Hip ABD

> Hip ER (posterior fibers)

> Hip IR (anterior fibers)

 

> Anterior fibers may assist flexion

> Posterior fibers may assist extension

Term
Gluteus Minimus
Definition

> Hip ABD

> Hip IR

Term
Tensor Fasciae Latae
Definition

> Hip flexion 

> Hip IR 

> Hip ABD 

Term
Piriformis
Definition

> Hip ER 

 

> Assist: hip ABD when hip is flexed

Term
Obturator Internus
Definition

> Hip ER 

 

> Assist: hip ABD when hip is flexed 

Term
Obturator Externus
Definition

> Hip ER

 

> Assist: hip ADD

Term
Gemellus Superior 
Definition

> Hip ER 

 

> Assist: hip ABD when hip is flexed

Term
Gemellus Inferior
Definition

> Hip ER 

 

> Assist: hip ABD when hip is flexed 

Term
Quadratus Femoris
Definition
Hip ER
Term
Biceps Femoris
Definition

> Knee Flexion

> Knee ER

> Hip Extension (long head only)

 

> Assist: Hip ER (long head only)

Term
Semitendinosus
Definition

> Knee Flexion 

> Knee IR

> Hip Extension 

 

> Assist: Hip IR

Term
Semimembranosus
Definition

> Knee Flexion

> Knee IR

> Hip Extension 

 

> Assist: Hip IR

Term
Sartorius
Definition

> Hip ER

> Hip ABD

> Hip Flexion

> Knee flexion

> Knee IR

Term
Rectus Femoris 
Definition

> Knee extension 

> Hip flexion 

Term
Vastus Lateralis
Definition
> Knee extension 
Term
Vastus Intermedius
Definition
> Knee Extension 
Term
Vastus Medialis
Definition
> Knee Extension 
Term
Articularis Genus 
Definition
> Retracts synovial membrane during knee extension prevent its entrapment between patella & femur 
Term
Popliteus
Definition

> Knee flexion

> Knee IR (origin fixed) 

> Hip ER (insertion fixed)

Term
Tibialis Anterior 
Definition

> Ankle DF 

> Foot INV

Term
Tibialis Posterior
Definition

> Foot INV

 

> Assist: Foot PF

Term
Gastrocnemius
Definition

> Ankle PF 

> Foot INV

 

> Assist: knee flexion

Term
Soleus 
Definition

> Ankle PF

> Foot INV

Term
Plantaris 
Definition

> Ankle PF

 

> Assist: knee flexion

Term
Peroneus Longus
Definition

> Foot EVE

 

> Assist: PF

> Depression of 1st metatarsal

Term
Peroneus Brevis 
Definition

> Foot EVE

 

> Assist: Foot PF

Term
Peroneus Teritus 
Definition

> Ankle DF

> Foot EVE

Term

Extensor Digitorum 

Longus

Definition

> MP extension (of 4 lesser toes)

 

> Assist: PIP & DIP extension of lesser toes

Term

Extensor Digitorum

Brevis

Definition

> MP extension of toes 2-4

> Assist: IP extension of toes 2 to 4

 

> MP extension of great toe (via most medial slip of tendon, also called the EHB; no slip to 5th toe from the EDBr)

Term

Flexor Digitorum 

Longus

Definition

> MP, PIP, DIP flexion of toes 2 to 5

 

 > Assist: PF

                  INV

Term

Flexor Digitorum

Brevis

Definition
> MP & PIP flexion of toes 2 to 5
Term

Abductor Digiti 

Minimi

Definition

> Toe 5 ABD

> Toe 5 MP flexion

Term

Flexor Digiti Minimi 

Brevis 

Definition
> Toe 5 MP flexion 
Term
Quadratus Plantar
Definition

> DIP flexion of toes 2 to 5

(in synergy with FDL)

Term
Lumbricales
Definition

> MP flexion of toes 2 to 5

 

> Assist: PIP & DIP extension of toes 2 to 5

Term
Dorsal Interossei
Definition

> Abduction of toes 2 to 4

 

> Assist: MP flexion of toes 2 to 4

                    May assist IP extension of    toes 2 to 4

Term
Plantar Interossei
Definition

> Adduction of toes: 3,4 & 5 

 

> Assist: MP flexion of toes 3,4 & 5

                   May assist IP extension of toes 3,4 & 5

Term

Extensor Hallucis 

Longus

Definition

> MP & IP extension

 

> Assist: DF

                         foot INV

Term

Flexor Hallucis 

Longus

Definition

> Great toe IP flexion 

 

> Assist: great toe MP flexion

                   ankle PF and foot INV

Term

Flexor Hallucis 

Brevis 

Definition
> Great toe MP flexion
Term
Abductor Hallucis 
Definition

> Abduction of great toe

 

> Assist: great toe MP flexion

    forefoot ADD

Term
Adductor Hallucis
Definition

> Great toe adduction

 

> Assist: great toe MP flexion

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