chapter 19 leg, ankle, foot muscles Flashcards
what is the origin, insertion, action of soleus
O:Posterior tibia and fibula
I: Posterior calcaneus
A: Ankle plantar flexion
what is the origin, insertion, action of plantaris
O: Posterior lateral condyle of femur
I: Posterior calcaneus
A: Very weak assist in knee flexion, ankle plantar flexion
what is the origin, insertion, action of tibias posterior
O: Interosseous membrane,
adjacent tibia and fibula
I: Navicular and most tarsals and metatarsals
A: Ankle inversion, assists in plantar flexion
what is the origin, insertion, action of flexor hallicus longus
O: Posterior fibula and
interosseous membrane
\I: Distal phalanx of the great toe
A: Flexes great toe, assists in inversion and plantar flexion of the ankle
what is the origin, insertion, action of flexor digitorum longus
O: Posterior tibia
I: Distal phalanx of four
lesser toes
A: Flexes the four lesser, toes, assists in ankle inversion and plantar flexion
what is the origin, insertion, action of tibialis anterior
O:Lateral tibia and
interosseous membrane
I: First cuneiform and
metatarsal
A: Ankle inversion and dorsiflexion
what is the origin, insertion, action of extensor hallucis longus
O: Fibula and interosseous
membrane
I: Distal phalanx of great toe
A: Extends first toe, assists in ankle inversion and dorsiflexion
what is the origin, insertion, action of extensor digitorum longus
O: Fibula, interosseous membrane, tibia
I: Distal phalanx of four lesser toes
A: Extends four lesser toes, assists in dorsiflexion
what is the origin, insertion, action of fibularis (peroneus) longus
O: Lateral proximal fibula and interosseous membrane
I: Plantar surface of first cuneiform and metatarsal
A: Ankle eversion, assists in plantar flexion
what is the origin, insertion, action of fibularis (peroneus) brevis
O: Lateral distal fibula
I: Base of fifth metatarsal
A: Ankle eversion, assists in plantar flexion
what is the origin, insertion, action of fibularis (peroneus) tertius
O: Distal medial fibula
I: Base of fifth metatarsal
A: Assists ankle eversion, & dorsiflexion
Intrinsic Muscles of the Foot Dorsal Surface and action?
Extensor digitorum brevis , Extends PIP 2-5
Intrinsic Muscles of the Foot Plantar Surface, First Layer and actions?
Abductor hallucis, ABD, flexes 1st IP
Flexor digitorum brevis, Flexes PIP of digits 2-5
Abductor digiti minimi, Flexes, ABDs 5th digit
Intrinsic Muscles of the Foot Plantar Surface, Second Layer
m:Quadratus plantae- A:Straightens diagonal line of pull of flexor digitorum longus
m:Lumbricales- A;Flexes MTPs, extends PIPs and DIPs
Intrinsic Muscles of the Foot Plantar Surface, Third Layer
Flexor hallucis brevis - Flexes MTP of first digit
Adductor hallucis- ADD, flexes first digit
Flexor digiti minimi- Flexes PIP of 5th digit
