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Flexor hallucis longus
Origin:
lower part of posterior fibula; interosseous membrane
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Flexor hallucis longus
Insertion:
base of distal phalanx of big toe
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Flexor hallucis longus
Action:
flex distal phalanx of big toe (IP joint)
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Flexor hallucis longus
Innervation:
tibial N
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Flexor digitorum longus
Origin:
posterior surface of tibia below popliteal line
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Flexor digitorum longus
Insertion:
plantar surface of base of distal phalanges of toes 2-5
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Flexor digitorum longus
Action:
flex distal phalanges of toes 2-5 (flex DIP joints)
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Flexor digitorum longus
Innervation:
tibial N
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Tibialis posterior
Origin:
interosseous membrne; posterior shaft of tibia and fibula
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Tibialis posterior
Insertion:
tuberosity of naicular, cuboid, three cuneiforms, and bases of 2nd-4th metatarsals
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Tibialis posterior
Action:
invert foot and assist in plantarflexion
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Tibialis posterior
Innervation:
tibial N
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Abductor hallucis
Origin:
calcaneal tuberosity
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Abductor hallucis
Insertion:
medial side of base of proximal phalanx of big toe
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Abductor hallucis
Action:
abducts big toe
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Abductor hallucis
Innervation:
medial plantar N
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Flexor digitorum brevis
Origin:
calcaneal tuberosity
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Flexor digitorum brevis
Insertion:
middle phalanx
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Flexor digitorum brevis
Action:
flexes toes 2-5 at PIP joints
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Flexor digitorum brevis
Innervation:
medial plantar N
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Abductor digiti minimi
Origin:
calcaneal tuberosity
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Abductor digiti minimi
Insertion:
lateral side of base of proximal phalanx of 5th toe
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Abductor digiti minimi
Action:
abducts 5th toe
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Abductor digiti minimi
Innervation:
lateral plantar N
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Quadratus plantae
Origin:
calcaneus (medial surface)
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Quadratus plantae
Insertion:
tendon of flexor digitorum longus
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Quadratus plantae
Action:
flexes toes
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Quadratus plantae
Innervation:
lateral plantar N
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Lumbricals
Origin:
tendons of flexor digitorum longus
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Lumbricals
Insertion:
extensor expansions of lateral 4 toes
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Lumbricals
Action:
flexes MP joints; eextends IP joints
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Lumbricals
Innervation:
1st medial plantar; 2,3,4 lateral plantar
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Flexor hallucis brevis
Origin:
plantar surface of cuboid
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Flexor hallucis brevis
Insertion:
medial and lateral sides of proximal phalanx of big toe
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Flexor hallucis brevis
Action:
flexes big toes
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Flexor hallucis brevis
Innervation:
medial plantar N
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Adductor hallucis
Transverse head Origin:
heads of metatarsal
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Adductor hallucis
Oblique head Origin:
plantar surface of metatarsals 2, 3, 4
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Adductor hallucis
Action:
adducts and assists flexion of big toe
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Adductor hallucis
Innervation:
lateral plantar N
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Flexor digiti minimi brevis
Origin:
plantar surface of 5th metatarsal
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Flexor digiti minimi brevis
Insertion:
base of proximal phalanx of 5th toe
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Flexor digiti minimi brevis
Action:
flexes proximal phalanx of 5th toe
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Flexor digit minimi brevis
Innervation:
lateral platar N
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Plantar Interossei
Origin:
plantar surfaces of metatarsals 3, 4, 5,
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Plantar interossei
Insertion:
medial side of proximal phalanges of toes 3-5
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Plantar interossei
Action:
adducts toes 3-5; flexes MP joints
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Plantar interossei
Innervation:
lateral plantar
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Dorsal interossei
Origin:
adjoining parts of metatarsals 1-5
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Dorsal interossei
Insertion:
both sides of proximal phalanx of 2nd toe; lateral side of proximal phalanges of toes 3 and 4
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Dorsal interossei
Action:
abductors of toes 2-4; flexes MP joints
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Dorsal interossei
Innervation:
lateral plantar N
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Platysma
Insertion:
fascia of pectoralis major and deltoid
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Platysma
Action:
corners of mouth down, skin of neck superiorly if teeth clenched
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Platysma
Innervation:
cervical branch of facial N (CN VII)
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Sternocleidomastoid
Origin:
mastoid process and nuchal line
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Sternocleidomastoid
Sternal head Insertion:
manubrium
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Sternocleidomastoid
Clavicular head Insertion:
medial clavicle
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Sternocleidomastoid
Unilateral action:
turns face to contralateral side
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Sternocleidomastoid
Bilateral action:
flexes cervical vertebrae so chin approaches manubrium
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Sternocleidomastoid
Innervation:
CN XI
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