Kinesiology

Actions

Sternocleidomastoid

Opposite site rotation of the head. Extension of head, but flexion of cervical spine

External Intercostals

Pull the ribs up and out: Assists with inspiration

Internal Intercostals

Pull the ribs down and inward: forced exhalation

Rectus Abdominis

Flex trunk, posterior tilt of pelvis, compresses abdomen

External Abdominal Oblique

Trunk rotation to opposite side, trunk flexion

Internal Abdominal Oblique

Trunk rotation to same side, trunk flexion

Transverse Abdominus

Controls and tensions Lumbo-Thoracic Abdominal Fascia

Tibialis Anterior

Dorsiflexion inversion of foot/ankle

Peroneus Brevis

Eversion of the ankle

Peroneus Longus

Eversion of food at subtalar joint. Slight plantarflexion

Flexor Hallucis Longus

Flexion of IP, MCP. One of three muscles that have tendons that run behind the medial malleolus.

Flexor Digitorum Longus

Flexion of 4 toes at MCP, PIP DIP. One of three muscles that have tendons that run behind the medial malleolus.

Tibialis Posterior

Inversion, plantarflexion, supports medial longitudinal arch of foot. One of three muscles that have tendons that run behind the medial malleolus.

Soleus

Plantarflexion

Gastrocnemius

Knee flexion, Ankle plantarflexion