Leg Muscles Flashcards
Tibialis Anterior Origin & Insertion
Origin:
Tibia lateral condyle and proximal 2/3 of lateral surface; Interosseous membrane
Insertion:
Medial cuneiform; 1st metatarsal base
Tibialis Anterior Function & Innervation
Function:
Ankle dorsiflexion
Ankle inversion
Innervation:
Deep peroneal n.
Extensor Digitorum Longus Origin & Insertion
Origin:
Tibia lateral condyle; Fibula medial surface
Insertion:
4 tendons; Middle and distal phalanges proximal base via dorsal digital expansion
Extensor Digitorum Longus Function & Innervation
Function:
Toe extension
Ankle dorsiflexion
Ankle eversion
Innervation:
Deep peroneal n.
Extensor Hallucis Longus Origin & Insertion
Origin:
Fibula medial surface; Adjacent interosseous membrane
Insertion:
Great toe distal phalanx
Extensor Hallucis Longus Function & Innervation
Function:
1st toe extension
Ankle dorsiflexion
Ankle inversion
Innervation:
Deep peroneal n.
Peroneus Tertius Origin & Insertion
Origin:
Fibula distal 1/3 of medial surface; Adjacent interosseous membrane
Insertion:
5th metatarsal base
Peroneus Tertius Function & Innervation
Function:
Ankle dorsiflexion
Ankle eversion
Innervation:
Deep peroneal n.
Peroneus Longus Origin & Insertion
Origin:
Tibia lateral condyle; Fibula lateral surface proximal 2/3
Insertion:
Medial cuneiform lateral surface; 1st metatarsal bone base lateral side
Peroneus Longus Function & Innervation
Function:
Ankle plantar flexion
Ankle eversion
Innervation:
Superficial peroneal n.
Peroneus Brevis Origin & Insertion
Origin:
Fibular lateral surface
Insertion:
5th metatarsal styloid process
Peroneus Brevis Function & Innervation
Function:
Ankle plantar flexion
Ankle eversion
Innervation:
Superficial peroneal n.
Gastrocnemius Origin & Insertion
Origin:
Lateral and medial femoral condyle posterior aspect
Insertion:
Calcaneal tuberosity via Achilles tendon
Gastrocnemius Function & Innervation
Function:
Ankle plantar flexion
Knee flexion
Innervation:
Tibial n.
Soleus Origin & Insertion
Origin:
Fibula head proximal 1/3 of shaft posterior surface; Tibia posterior side
Insertion:
Calcaneal tuberosity via Achilles tendon