Gastrocnemius + Soleus
What strong Tendon does Soleus and Gastrocnemius attach to ?
Achilles' tendon (strong tendon )
Define dorsiflexion
Bending backwards Contracting foot/hand
Define lateral malleolus
Boney mark on the side of ankle Action (every foot)
Gastro + soleus are what kind of muscles
Calf muscles that attach to the heel bone (calcaneus)
Define ligament
Connects bone to bone
Define tendon
Connects muscle to bone
Description of soleus
Deep to the gastrocnemius Medial + lateral fibers Bulge out to the side of the leg and extend further distal than the gastrocnemius heads
origin of fibularis brevis
Distal two thirds of lateral fibula
actions of fibularis brevis
Everts foot and weakly plantarflexes ankle
Brevis lies deep to what muscle ?
Fibularis longus
Origin of Achilles Tendon (thickest in the human body)
Found in the back of the lower leg know as (heel cord)
origin of peroneus longus (Fibularis longus)
Head of fibula lateral shaft of fibula
What does the gastrocnemius and soleus do ?
Large muscle mass of the posterior leg is composed of soleus + Gastro
fibularis longus/brevis
Located on the lateral side of the fibula Between soleus + extensor digitorum
fibularis tertius origin
Medial surface distal 3rd
What serves to attach to Achilles' tendon
Plantaris Gastrocnemius Soleus Calcaneus(heel bone) Acting via to cause plantar flexion of foot and ankle joint EXCEPT FOR SOLEUS(flex of knee)
insertion of plantaris
Posterior surface of calcaneus via calcaneal tendon
origin of soleus
Soleal line of tibia
Define Calcaneal (Achilles tendon)
Strong tendon at the back of heel
Gastrocnemius and soleus form what ?
Triceps surae
Gastrocnemius has what
Two heads and crosses two joints The knee The ankle
actions of plantaris
Weak plantar flex of ankle
insertion of peroneus longus
base of 1st metatarsal and medial cuneiform
insertion of gastrocnemius and soleus
calcaneus via achilles tendon
Define plantar flexion
depressing the foot (pointing the toes)
fibularis tertius insertion
dorsal surface of metatarsal 5
fibularis tertius action
dorsiflexes and everts foot
actions of peroneus longus
eversion and plantar flexion
Define calcaneus
heel bone
origin of plantaris
lateral supracondylar line of femur
origin of gastrocnemius
medial and lateral epicondyles of femur
actions of soleus
plantar flexion
actions of gastrocnemius
plantar flexion, knee flexion
insertion of fibularis brevis
tuberosity of 5th metatarsal