Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
12 Cards in this Set
- Front
- Back
|
Abductor hallucis
|
1st layer
Origin: med tubercle of tuberosit of calcaneus; flexor retinaculum; plantar aponeurosis Insertion: medial side of base of proximal phalanx of 1st digit Innervation: medial plantar nerve Function: abducts and flexes 1st digit |
|
|
Flexor digitorum brevis
|
1st Layer
Origin: medial tubercle of tuberosity of calcaneus; plantar aponeurosis; intermuscular septa Insertion: both sides of middle phalanges of lateral four digits Innervation: medial plantar nerve Function: flexes lateral four digits |
|
|
Abductor digiti minimi
|
1st Layer
Origin: medial and lateral tubercles of tuberosity of calcaneus; plantar aponerurosis; intermuscular septa Insertion: lateral side of base of proximal phalanx of 5th digit Innervation: lateral plantar nerve Function: abducts and flexes little toe |
|
|
Quadratus plantae
|
2nd Layer
Origin: medial surf and lateral margin of plantar surf of calcaneus Insertion: posterolateral margin of tendon of flexor digitorum longus Innervation: lateral plantar nerve Function: assists flexor digitorum longus in flexing lateral four digits |
|
|
Lumbricals
|
2nd Layer
Origin: tendons of flexor digitorum longus Insertion: medial aspect of expansion over lateral four digits Innervation: medial one-medial plantar nerve. lateral three- lateral plantar nerve Function: flex proximal phalanges, extend middle and distal phalanges of lateral four digits |
|
|
Flexor hallucis brevis
|
3rd Layer
Origin: plantar surfaces of cuboid and lateral cuneiforms Insertion: both sides of base of proximal phalanx of 1st digit Innervation: medial plantar nerve Function: flexes proximal phalanx of 1st digit |
|
|
Adductor hallucis
|
3rd layer
Origin: oblique head- bases of metatarsals 2-4. transverse head- plantar ligaments of mtp joints Insertion: lateral side of base of proximal phalanx of 1st digit Innervation: deep branch of lateral plantar nerve Function: adduct 1st digit; assists in transverse arch of foot by metatarsals medially |
|
|
Flexor digit minimi brevis
|
3rd Layer
Origin: base of 5th metatarsal Insertion: base of proximal phalanx of 5th digit Innervation: superficial branch of lateral plantar nerve Function: flexes proximal phalanx of 5th digit, thereby assisting with its flexion |
|
|
Plantar interossei (3 muscles)
|
4th Layer
Origin: bases and medial sides of metatarsals 3-5 Insertion: medial sides of bases of phalanges of 3-5th digits Innervation: lateral plantar nerve Function: adduct digits 2-4 and flex mtp joints |
|
|
Dorsal interossei (4 muscles)
|
4th Layer
Origin: adjacent sides of metatarsals 1-5 Insertion: 1st- medial side of proximal phalanx of 2nd digit. 2-4th- lateral sides of 2-4th digits Innervation: lateral plantar nerve Function: abducts digits 2-4 and flex mtp joints |
|
|
Extensor digitorum brevis
|
Dorsum of Foot
Origin: calcaneus (floor of tarsal sinus); interosseous talocalcaneal ligament; stem of inf extensor retinaculum Insertion: long extensor tendons of four medial digits Innervation: deep fibular nerve Function: aids the extensor digitorum longus in exending the four medial toes at the mtp and ip joints |
|
|
Extensor hallucis brevis
|
Dorsum of Foot
Origin: in common with extensor digitorum brevis Insertion: dorsal aspect of base of proximal phlanx of great toe Innervation: deep fibular nerve Function: aids the extensor hallucis longus in extending the great toe at the mtp joint |
