Pet3323 Lab Exam 1 - Lower Leg And Foot Muscles

Front 1

Origin (3) and Insertion (2) of Tibilias Anterior

Back 1

Origin: Lateral Condyle, Upper 2/3 of Tibial shaft, Interosseous Membrane.

Insertion: Medial Cuneiforn, !st Metatarsal.

Front 2

Origin (3) and Insertion of Extensor Digitorum Longus

Back 2

Origin: Lateral Condyle of Tibia, Proximal 3/4 of Fibula, Interosseous Membrane.

Insertion: MIddle/Distal Phalanges of toes 2-5.

Front 3

Origin (2) and Insertion of Fibularis Tertius

Back 3

Origin: Distal Anterior Fibula, Interosseous Membrane.

Insertion: Dorsum of 5th Metatarsal.

Front 4

Origin (2) and Insertion of Extensor Hallucis Longus

Back 4

Origin: Anteromedial Fibula, Interosseous Membrane.

Insertion: Distal Phalanx of big toe.

Front 5

Origin and Insertion (2) of Fibularis Longus

Back 5

Origin: Upper portion of Lateral Fibula.

Insertion: 1st Metatarsal and Medial Cuneiform.

Front 6

Origin and Insertion of Fibularis Brevis

Back 6

Origin: Distal Fibula Shaft.

Insertion: Proximal end of 5th Metatarsal.

Front 7

Origin and Insertion of Gastrocnemius

Back 7

Origin: Medial and Lateral Condyles of Femur.

Insertion: Posterior Calcaneous.

Front 8

Origin (3) and Insertion of Soleus

Back 8

Origin: Superficial Tibia, Fibula, Interosseous Membrane.

Insertion: Posterior Calcaneous.

Front 9

Origin and Insertion of Dorsal Interosseous

Back 9

Origin: Sides of Metatarsals.

Insertion: Extensor expansion over 1st phalanx of toes 2-4 on side opposite midaxis of foot and both sides of toe 3.

Front 10

Origin and Insertion of Plantar Interosseous

Back 10

Origin: The side of each Metatarsal that faces the midaxis of the foot.

Insertion: Extensor expansion on 1st phalanx of each toe (except toe 3) on the side facing the midaxis of the foot.

Front 11

Origin (2) and Insertion of Flexor Digiti Minimi Brevis

Back 11

Origin: 5th Metatarsal, Tendon sheath of Fibularis Longus.

Insertion: Base of Proximal Phalanx of toe 5.

Front 12

Origin (2) and Insertion of Flexor Hallucis Brevis

Back 12

Origin: Lateral Cuneiform, Cuboid bones.

Insertion: Two tendons of base of proximal phalanx of great toe.

Front 13

Origin and Insertion of Abductor Digiti Minimi

Back 13

Origin: Calcaneal Tuberosity.

Insertion: Lateral side of base of little toe's proximal phalanx.

Front 14

Origin (2) and Insertion (2) of Abductor Hallucis

Back 14

Origin: Calcaneal Tuberosity, Flexor Retinaculum.

Insertion: Proximal Phalanx of great toe medial side, In tendon of Flexor Hallucis Brevis.

Front 15

Origin and Insertion of Flexor Digitorum Brevis

Back 15

Origin: Calcaneal Tuberosity.

Insertion: Middle phalanx of toes 2-4.

Front 16

Origin (2) and Insertion of Extensor Digitorum Brevis

Back 16

Origin: Anterior Calcaneous, Extensor Retinaculum.

Insertion: Base of proximal Phalanx of great toe.

Front 17

Origin and Insertion of Flexor Digitorum Longus

Back 17

Origin: Posterior Tibia.

Insertion: Under foot to distal phalanx of toes 2-5.

Front 18

Origin (2) and Insertion of Flexor Hallucis Longus

Back 18

Origin: Midshaft of Fibula, Interosseous Membrane.

Insertion: Under foot to distal phalanx of big toe.

Front 19

Origin (3) and Insertion (3) of Tibilias Posterior

Back 19

Origin: Superior Tibia, Superios Fibula, Interosseous Membrane.

Insertion: Behind medial Malleolus, Under Arch, Inserts into Tarsals and Metatarsals 2-4.

Front 20

Action (3) of Tibialis Anterior

Back 20

Dorsiflexion.
Inversion.
Supports medial longitudinal arch.

Front 21

Action (2) of Extensor Digitorum Longus

Back 21

Toe Extension.
Dorsiflexion.

Front 22

Action (2) of Fibularis Tertius

Back 22

Dorsiflexion.
Inverts foot.

Front 23

Action (2) of Extensor Hallucis Longus

Back 23

Dorsiflexion.
Extend great toe.

Front 24

Action (3) of Fibularis Longus

Back 24

Plantar Flexion.
Foot Eversion.
Keeps foot flat on the ground.

Front 25

Action (2) of Fibularis Brevis

Back 25

Plantar Flexion.
Eversion of foot.

Front 26

Action (2) of Gastrocnemius

Back 26

Plantar Flexes foot when knee is extended.
Flex knee when foot of Dorsiflexed.

Front 27

Action (2) of Soleus

Back 27

Plantar Flexes foot.
Locomotor and postural.

Front 28

Action (3) of Flexor Digitorum Longus

Back 28

Plantar Flexion.
Foot Inversion.
Helps foot "grip" the ground.

Front 29

Action (3) of Flexor Hallucis Longus

Back 29

Plantar Flexion.
Foot Inversion.
"Push off" during walking.

Front 30

Action (3) of Tibialis Posterior

Back 30

Foot Inversion.
Plantar Flexion.
Stabilizes medial longitudinal arch.

Front 31

Action of Extensor Digitorum Brevis

Back 31

Extends toes at metatarsophalangeal joints.

Front 32

Action of Flexor Digitorum Brevis

Back 32

Flex toes.

Front 33

Action of Abductor Hallucis

Back 33

Abducts great toe.

Front 34

Action of Abductor Digiti Minimi

Back 34

Abducts and flexes little toe.

Front 35

Action of Flexor Hallucis Brevis

Back 35

Flexes great toe's metatarsophalangeal joint.

Front 36

Action of Flexor Digiti Minimi Brevis

Back 36

Flexes little toe's metartarsophalangeal joint.

Front 37

Action of Dorsal Interosseous

Back 37

Abduct (diverge) toes.

Front 38

Action of Plantar Interosseous

Back 38

Adducts toes.