Foot Anatomy
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34 Terms
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Intrinsic muscles
________: found within the foot and primarily act to move the toes and support foot arches to maintain foot structure.
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lateral plantar
Laterally: on each side, attached to metatarsal bones by medial and ________ intermuscular septa.
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Sole/plantar aspect
the bottom of the foot
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extrinsic muscles
found in the lower leg, act to dorsiflex, plantarflex, invert and evert the foot
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Adductor hallucis (originates by 2 heads
oblique and transverse)
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medial plantar nerve
largest and accompanies medial plantar artery
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lateral plantar nerve
smallest and accompanies lateral plantar artery
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main function of foot arches
to support body weight and act as a lever to propel the body
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lateral longitudinal arch keystone
cuboid
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forming bones of the transverse arch
Cuboid, 3 cuneiforms, base of metatarsal bones
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the forming bones of the medial longitudinal arch
Calcaneus, talus, navicular, 3 cuneiform bones, medial 3 metatarsal bones
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2 sesamoid bones in the tendon of
adductor hallucis
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4th lumbrical muscle supplied by which nerve
Lateral plantar nerve
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planter interossei muscles are in the ___ layer of the foot
fourth
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medial longitudinal arch keystone
talus
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transverse arch keystone
intermediate cuneiform
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most important muscle supporting transverse arch
fibularis longus
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the forming bones of the lateral longitudinal arch
Calcaneus, cuboid, lateral 2 metatarsal bones
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2 terminal branches of tibial nerve
medial plantar nerve
lateral plantar nerve
lateral plantar nerve
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Medial plantar nerve branches
1. Muscular:
* abductor hallucis
* flexor digitorum brevis
* 1st lumbrical muscle
* flexor hallucis brevis
2. Cutaneous
* medial 2/3 of the sole
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Lateral plantar nerve branches
\
1. Muscular:
* abductor digiti minimi
* 2nd, 3rd, 4th lumbrical muscle
* adductor hallucis
* flexor digiti minimi brevis
* all interossei (4th layer)
2. Cutaneous
* lateral 1/3 of the sole
1. Muscular:
* abductor digiti minimi
* 2nd, 3rd, 4th lumbrical muscle
* adductor hallucis
* flexor digiti minimi brevis
* all interossei (4th layer)
2. Cutaneous
* lateral 1/3 of the sole
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Plantar interossei supplied by ____ nerve
Lateral plantar nerve
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Dorsal interossei supplied by ____ nerve
Lateral plantar nerve
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Adductor hallucis supplied by ____ nerve
Lateral plantar nerve
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Flexor digiti minimi brevis supplied by ____ nerve
Lateral plantar nerve
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Quadratus plantae supplied by ____ nerve
Lateral plantar nerve
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lateral 3 Lumbrical muscles supplied by ____ nerve
Lateral plantar nerve
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Abductor digiti mini supplied by ____ nerve
Lateral plantar nerve
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Abductor hallucis supplied by ____ nerve
medial plantar nerve
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Flexor digitorum brevis supplied by ____ nerve
medial plantar nerve
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1st lumbrical muscle supplied by
medial plantar nerve
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Flexor hallucis brevis supplied by
medial plantar nerve
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Tendon of flexor digitorum longus crosses superficial to flexor hallucis longus to reach insertion in the _____ layer of the foot
second
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terminal branches of posterior tibial artery
Medial plantar artery
Lateral plantar artery
Lateral plantar artery