• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/37

Click to flip

37 Cards in this Set

  • Front
  • Back
Why are they called intrinsic muscles?
because they originate and insert within the foot
How many layers are in the plantar group of intrinsic foot muscles?
FOUR
first layer: most superficial
second layer
third layer
fourth layer: deepest
plantar aponeurosis (fascia)
formed by the deep fascia, this extends from calcaneus bone to phalanges of toes and supports longitudinal arch of the foot, encloses flexor tendons
Name the two groups of intrinsic foot muscles
Dorsal

Plantar
DORSAL

extensor digitorum brevis origin
calcaneus and inferior extensor retinaculum
DORSAL

extensor digitorum brevis insertion
tendons of extensor digitorum longus on toes 2-4 and proximal phalanx of great toe
DORSAL

extensor digitorum brevis action
extensor hallucis brevis extends great toe at metatarsophalangeal joint extensor digitorum brevis extends toes 2-4 at interphalangeal joints
PLANTAR - First layer

abductor hallucis origin
calcaneus, plantar aponeurosis, and flexor retinaculum
PLANTAR - First layer

abductor hallucis insertion
medial side of promimal phalanx of great toe with tendon of flexor hallucis brevis
PLANTAR - First layer

abductor hallucis action
abducts and flexes great toe at metatarsophalangeal joint
PLANTAR - First layer

flexor digitorum brevis origin
calcaneus and plantar aponeurosis
PLANTAR - First layer

flexor digitorum brevis insertion
sides of middle phalanx of toes 2-5
PLANTAR - First layer

flexor digitorum brevis action
flexes toes 2-5 at proximal interphalangeal and metasophalangeal joints
PLANTAR - First layer

abductor digiti minimi origin
calcaneus and plantar aponeurosis
PLANTAR - First layer

abductor digiti minimi insertion
lateral side of proximal phalanx of little toe with tendon of flexor digiti minimi brevis
PLANTAR - First layer

abductor digiti minimi action
abducts and flexes little toe at metasophalangeal joint
PLANTAR - Second layer

quadratus plantae origin
calcaneus
PLANTAR - Second layer

quadratus plantae insertion
tendon of flexor digitorum longus
PLANTAR - Second layer

quadratus plantae action
assists flexor digitorum longus to flex toes 2-5 at interphalangeal and metatarsophalangeal joints
PLANTAR - Second layer

lumbricals origin
tendons of flexor digitorum longus
PLANTAR - Second layer

lumbricals insertion
tendons of extensor digitorum longus on proximal phalanges of toes 2-5
PLANTAR - Second layer

lumbricals action
extend toes 2-5 at interphalangeal joints and flexes toes 2-5 at metatarsophalangeal joints
PLANTAR - Third layer

flexor hallucis brevis origin
cuboid and third (lateral) cuneiform
PLANTAR - Third layer

flexor hallucis brevis insertion
medial and lateral sides of proximal phalanx of great toe via tendon containing sesamoid bone
PLANTAR - Third layer

flexor hallucis brevis action
flexes great toe at metatarsophalangeal joint
PLANTAR - Third layer

adductor hallucis origin
metatarsals 2-4, ligaments of 3-5 metatarsophalangeal joints, and tendon of peroneus longus
PLANTAR - Third layer

adductor hallucis insertion
lateral side of proximal phalanx of great toe
PLANTAR - Third layer

adductor hallucis action
adducts and flexes great toe at metatarsophalangeal joint
PLANTAR - Third layer

flexor digiti minimi brevis origin
metatarsal 5 and tendon of peroneus longus
PLANTAR - Third layer

flexor digiti minimi brevis insertion
lateral side of proximal phalanx of little toe
PLANTAR - Third layer

flexor digiti minimi brevis action
flexes little toe at metatarsophalangeal joint
PLANTAR - Fourth layer

dorsal interossei origin
adjacent side of metatarsals
PLANTAR - Fourth layer

dorsal interossei insertion
proximal phalanges: both sides of toe 2 and lateral side of toes 3 & 4
PLANTAR - Fourth layer

dorsal interossei action
abduct and flex toes 204 at metatarsophalangeal joints and extend toes at interphalangeal joints
PLANTAR - Fourth layer

plantar interossei origin
metatarsals 3-5
PLANTAR - Fourth layer

plantar interossei insertion
medial side of proximal phalanges of toes 3-5
PLANTAR - Fourth layer

plantar interossei action
adduct and flex proximal metatarsophalangeal joints and extend toes at interphalangeal joints