Muscles Flashcards
what is the innervation of the lateral crural muscles?
superficial peroneal nerve
what region of the spine doe the vastus intermedius originate from?
L2-4
what muscles are on the dorsal of the foot?
extesnor hallucis brevis
extensor digitorum brevis
what are the actions of the sartorius?
flexes thigh
abdjucts thigh
laterally rotates thigh
what is action of abductor hallucis?
flexes and abducts great toe
what are the posterior crural muscles?
felxor digitorum longus
flexor hallucis longus
gastrocnemius
plantaris
popliteus
soleus
tibilais posterior
In the femoral compartment, which muscles are respoinsible for extending the leg?
rectus femoris
Tensor fasciae latae
vastus intermedius
vastus lateralis
vastus medialis
Adductor magnus
What are the actions of the posterior thigh region?
flexes and extends legs
only long head of biceps femoris extends leg
what gets innervated by the deep peroneal nerve?
extensor digitorum brevis
extensor hallucis brevis
what muscles are responsible for plantar flexing ankle?
peroneus longus and brevis
flexor digitorum longus
flexor hallucis longus
gastrocnemius
plantaris
soleus
tibialis posterior
3rd layer of sole of foot
adductor hallucis
flexor hallucis brevis
flexor digiti minimi brevis
what region of the spine deos the gastrocnemius and soleus arrise from?
S 1,2
what muscles does the obturator internus of the sacral plexus innervate?
gemellus superior
obturator internus
what is the action of the lumbricals?
flexes proximal phalanges and extends IP joints
what are the actions of the tensor fasciae latae?
abducts, flexes
medially rotates thigh
maintains extended leg
What muscles are innervated by femoral nerve?
Iliacus
rectus femoris
satorius
vastus intermedius
vastus lateralis
vastus medialis
pectineus
what muscles are innervated by the obturator nerve?
all medial femoral muscles
Adductor brevis, longus, magnus, gracilis, pentineus
and obturator externus
What gets innervated by the lateral plantar nerve?
abductor digiti minimi
adductor hallucis
flexor digitorum accessorius
flexor digit minimi
interossei dorsal and plantar
lumbricals 2-4
what muscles are responsible for adducting the thigh?
Adductor brevis, longus, magnus
gracilis
pectineus
what are on the 1st layer of plantar muscles?
flexor digitorum brevis
abductor hallucis
abdcutor digiti minimi
In the anterior femoral compartment, which muscles are responsible for flexion of the thigh?
Iliacus
psoas
rectus femoris
satorius
tensor fasciae latae
adductor longus
gracilis
pectineus
(all on anterior except vastus muscles)
what is the innervation for all posterior crural muscles?
tibial nerve
4th layer of sole of foot
plantar interossei
dorsal interossei
what is the difference between extensor digitorum longus and extensor hallucis longus?
EDL: controls toes 2-5
EHL: controls great toe
what is the exception to the actions of the posterior crural muscles?
all plantar flex ankle except popliteus, which unlocks knee during flexion
what is the innervation of the posterior femoral muscles?
tibial division of sciatic nerve
peroneal division for short head of biceps femoris
In the anterior compartment of femoral thigh, what muscles stablalize the hip joint?
iliacus
psoas
what are the lateral crural muscles?
peroneus longus
peroneus brevis
what muscles does the quatratus femoral branch of sacral plexus innervate?
gemellus inferior
quatratus femoris
what muscles abduct the thigh?
gluteus medius and minimus
what actions does the extensor hallucis longus do?
extends great toe
What is the innervation of the gluteal muscles?
interfior innervates gluteus maximum
superior innervates medius and minimus
2nd layer of sole of foot
quadratus plantae (digitorum accessorius)
Lumbricals
What are the anterior crural muscles?
extensor digitorum longus
extensor hallucis longus
peroneus tertius
tibialis anterior
*laterally of tibia
Which posterior crural muscles flex leg?
gastrocnemius
plantaris
what is the difference between interossi plantar and dorsal?
plantar adducts
dorsal abducts
what actions do the peroneus tertius do?
dorsiflexes ankle
everts foot
what is action of interossei-plantar
adducts and flexes MP, extends digits 3-5
what gets innervated by medial plantar nerve?
abductor hallucis
flexor digitorum brevis
flexor hallucis brevis
lumbricals 1st
what action does the tibialis anterior do?
dorsiflex ankle
inverts foot
what is the action of extensor digitorum brevis?
extension of digits 2-5
what is the difference between the flexor digitorum longus and extensor digitorum longus?
flexor flexes toes 2-5
plantar flexes
tibial nerve.
posterior tibial a.
extensor extends does 2-5
dorsiflexes
deep peroneal nerve
anterior tibial a. and perforating brach of peroneal a.
what is the action of adductor hallucis?
adducts great toe
What muscles are in the posterior femoral region?
biceps femoris (long and short)
semimembranosus
semitendonosus
what actions does the extensor digitorum longus doe?
dorsiflex angle,
extends digits 2-5
Innervation of anterior crural muscles?
deep peroneal nerve
what are the actions of the lateral crural muscles?
plantar flex ankle
evert foot
what muscles are responsible for medially rotating thigh?
Gracilia
Tensor fasciae latae
Gluteus medius
Gluteus minimus
What muscles are responsible for laterally rotating thigh?
sartorius
obturator internus
Gemellus inferior and superior
gluteus maximum
obturator externus
piriformis
quadratus femoris
what actions do ethe tibialis posterior do?
plantar flexes ankle
inverts foot
what is the action of abductor digiti minimi
abducts and flexes 5th digit
what is the common action of all anterior crural muscles?
dorsiflex ankle
What region of the spine does the vastus muscles originate from?
L2-4
What region of the spine does the recturo femoris originate from?
L2-4
what is action of interossei-dorsal?
abducts and flexes MP, extends 2-4
what are the most superifical muscles on the sole of the foot?
felxor digitorum brevis
abductor hallucis
abductor digit minimi
what are the intrinsic muscles of the dorsum of the foot?
extensor hallucis brevis
