Origins
Origin of Longissimus
Iliac Crest, posterior sacrum, inferior lumbar ad sacral spinous process
Insertion of Deltoideus
Deltoid Tuberosity of the Humerous
Action of Iliocostalis
Bilaterally extend vertebral column
Innervation of Tibialis anterior
Common fibular nerve
Origin of Multifidus
transverse processes of Cervical through Sacral vertebrae
Insertion of the Brachialis
Action of Rectus Femoris
Flexes thigh at hip and extends leg at knee
Innervation of Plantaris
Tibial nerve
Origin of Trapezius
Occipital bone and spinous process of cervical and thoracic vertebrae
Insertion of Flexor Carpi Ulnaris
Base of Metacarpal 5, Hamate, and Pisiform
Action of Semitendinosus
Extends thigh at hip and flexes leg at knee
Innervation of Pronator Teres
Median Nerve
Origin of Teres Major
Lateral border of the Scapula
Insertion of Flexor Digitorum Superficialis
Middle Phalanges of digits 2-5
Action of Gracilis
Adducts thigh at hip and flexes leg at knee
Innervation of Triceps Brachii
Radial Nerve