Spinalis
O- Spinous processes of the upper lumbar and lower thoracic vertebrae (thoracis), Ligamentum nuchar, spinous process of C7. I- Spinous processes of upper thoracic (thoracis), spinous processes of cervicals except C1 A- Extend the vertebral column and laterally flex the vertebral column
Semitendinosus
O-Ischial tuberosity I- Proximal, medial shaft of the tibia at pes anserinus tendon A- Flex the knee, medially rotate the flexed knee, extend the hip joint, assist to medially rotate the hip, tilt the pelvis posteriorly.
Peroneus Longus
O- head of fibula and proximal 2/3 of lateral fibula I- Base of the first metatarsal and medial cuneiform A-Evert foot, assist to plantar flex ankle
Rotators
O- Transverse processes of lumbar through cervical vertebrae I- Spinous processes of lumbar vertebrae(span1-2 vertebrae) A-Rotate the vertebral column
Massiter
O-Zygomatic arch I- Ramus and angle of the mandible A-Elevate, Protract and deviate the mandible
Adductor magnus
O- Inferior ramus of the pubis, ramus of ischium and ischial tuberosity I-Medial lip of linea aspera and adductor tubercle via the adductor hiatus A-Adduct hip, laterally rotate hip and extend the hip.
Tibialis Anterior
O- lateral condyle of tibia; proximal, lateral surface of tibia and interosseous membrane I- Medial cuneiform and base of the first metatarsal A- Invert the foot, dorsilflex the ankle
Internal Oblique
O-lateral inguinal ligament, iliac crest, and thoracolumbar fascia I-Internal surface of lower three ribs, abdominal aponeurosis to linea alba A- (bilaterally)Flex vertebral column, compress abdominal contents and rotate to the same side
Temporalis
O-Temporal fascia and fossa I- Corrinoid process of the mandible A- Elevate and retract the mandible
Pectineus
O- Superior ramus of pubis and pectineal line I- Pectineal line of femur A- Adduct hip, laterally rotate hip
Flexor Digitorum longus
O- Middle, posterior surface of tibia I- Distal phalanges of second through fifth toes A- Flex the second through fifth toes, weak plantar flexion of ankle, invert foot
Anterior scalene
O- TVP C3-C6, I rib 1, A- Flex the neck Bi laterally, lateral flexion rotation to the opposite side.
Biceps femoris
O-(long head) ischial tuberosity, (short head) lateral lip of linea aspera I- Head of fibula A- Flex the knee, laterally rotate the hip flexed knee, (long head) extend hip, assist to laterally rotate hip
Extensor digitorum Longus
O- Proximal half of the medial surface of the fibula, lateral condyle of the tibia and interosseous membrane I- Distal and middle phalanges of the 2nd - 5th digits A- Extend the second through 5th digits, evert the foot and Dorsiflex the foot
SCM
O- Manubrium and Clavicle I- Mastoid process of the temporal bone A- Flexion bilaterally, lateral flexion, rotation to the opposite side.
Gracilis
O-Inferior ramus of pubis I- Proximal, medial shaft of tibia at pes anserinus tendon A-Flex the knee, medially rotate the flexed knee, adduction of the hip
Gastrocnemius
O- Posterior condyles of the femur I- Calcaneus via the calcaneal tendon A- flex the knee and plantarflex the ankle