Stott Pilates Exam Prep-Actions, Origins and Insertions of Muscles 109 correct solutions.

Stott Pilates Exam Prep-Actions, Origins
and Insertions of Muscles 109 correct
solutions.
Stott Pilates Exam Prep-Actions, Origins
and Insertions of Muscles 109 correct
solutions.
Gastrocnemius - ANSWER A: plantarflexes and inverts foot at ankle, O:femoral condyles

I: Calcaneus via achilles tendon



Soleus - ANSWER A: plantarflexes and inverts foot at ankle

O: Upper 1/3 of fibia

I: Calcaneus via achilles tendon



Tibialis Anterior - ANSWER A: Dorsiflexes and inverts foot at ankle

O: Lateral condyle of tibia

I: plantar surface of first metatarsal and cuneiform



Tibialis Posterior - ANSWER A: Inverts and plantarflexes the foot at ankle. Medial ankle stabilizer.

O: Lateral part of posterior surface of tibia, proximal 2/3 of medial surface of fibula.

I: Tuberosity of navicular, with branches to sustenaculum tali of calcaneus, plantar surfaces of all 3
cuneiforms, cuboid, and bases of 2nd, 3rd, and 4th metatarsal bones.



Popliteus - ANSWER A: Rotates tibia medially on the femur, or femur laterally on tibia. Brings knee out of
full extension. Helps with posterior stability of knee

O: Lateral condyle of the femur

I: Posterior surface of tibia above soleal line.



Plantaris - ANSWER A: plantar flexes and inverts the foot at the ankle, flexes the leg at the knee.

,Stott Pilates Exam Prep-Actions, Origins
and Insertions of Muscles 109 correct
solutions.
O: Lower part of lateral supracondylar line of femur, and oblique popliteal ligament of knee.

I: Posterior part of the calcaneus medial to the achilles tendon.



Peroneus Longus - ANSWER A: Eversion and plantar flexion of foot at ankle. Gives lateral stability to the
ankle.

O: Head and proximal 2/3 of lateral tibia

I: Lateral margin of plantar surface of 1st cuneiform and metatarsal.



Peroneus Brevis - ANSWER A: Eversion and plantar flexion of the foot at the ankle. Gives lateral stability
to the ankle.

O: Distal 2/3 of the lateral fibula.

I: Tuberosity on lateral side of 5th metatarsal



Peroneus Tertius - ANSWER A: Dorsiflexes and everts the foot at the ankle.

O: Distal 1/3 of anterior surface of fibula.

I: Dorsal surface of 5th metatarsal.



Extensor Hallucis Longus - ANSWER A: Extends distal phalanx of big toe. Continued action extends
proximal phalanx and dorsiflexes and inverts the foot at the ankle.

O: Middle 1/2 of the anterior surface of fibula,

I: Dorsal surface of base of distal phalanx of hallux (big toe)



Extensor Digitorum Longus - ANSWER A: Extends the lateral 4 toes. Dorsiflexes and everts foot at the
ankle.

O: Lateral condyle of tibia, head and proximal 3/4 of the anterior surface of fibula.

I: Divides into 4 tendons after passing under extensor retinaculum to insert on dorsal surfaces of bases
of middle and distal phalanges of the 2nd-5th toes.

, Stott Pilates Exam Prep-Actions, Origins
and Insertions of Muscles 109 correct
solutions.
Flexor Hallucis Longus - ANSWER Action:

Flexion of great toe

Plantar flexion of foot

Inversion of foot

Origin:

Fibula (posterior shaft)

Interosseous membrane

Insertion:

Distal phalanx of great toe

Comment:

Powerful muscle for "push-off" of foot during walking and running



Flexor Digitorum Longus - ANSWER Action:

Flexion of toes 2-5

Plantar flexion of foot

Inversion of foot

Origin:

Tibia (posterior middle shaft)

Insertion:

Distal phalanges of toes 2-5

Comment:

Tendon provides attachment for quadratus plantae (insertion) and lumbrical (origin) muscles



Vastus Medialis - ANSWER A: Extends leg at knee and draws patella medially. O: Lower 1/2 of
intertrochanteric line, tendons of adductor magnus and adductor longus

I: Medial border of the patella and through the ligamentum patallae into tibial tuberosity