The Man

#1.   Back 3/4 View

Spinalis group

Longissimus group

Iliocostalis group

Obliquus externus abdominis

Quadratus lumborum

#2.   Front 3/4 View

Longissimus Capitis- extends, laterally flexes the head and cervical vertebrae. Rotates the head to the opposite side.

attatchements: cranial dorsal mastoid process, caudal transverse processes of vertebrae C4 to T5

Longissimus Cervicis- extends laterally flexes the cervical vertebrae, 

attatchments: cranial transverse processes of vertebrae C2 to C6, caudal transverse processes of vertebrae T1 to T5

Obliquus externus abdominis-flexes the lumbar vertebrae, compresses the abdomen; opposite side rotator of the thoracic vertebrae

attachments: axial outer surfaces of ribs 5 to 12, interdigitating with the Serratus anterior; linea alba, pelvic, illiac crest, inguinal ligament

Rectus abdominis- flexes the lumbar vertebrae, helps depress the ribs and compress the abdomen in forced expiration

attachments: axial external surfaces of cartilages of ribs 5 to 7, xiphoid process, pelvic,  pubic symphysis and crest

#3.   Back View

Spinalis cervicis- extends the cervical vertebrae 

attachments: cranial spinous processes of vertebrae C2 to C4, caudal spinous processes of vertebrae C7 to T2

Spinalis capitis- extends the cervical vertebrae and head; laterally flexes and rotates the head.

attachments: cranial medial occipital bone between superior and inferior nuchal lines, caudal spinous processes of vertebrae C7 to T1

Spinalis thoracis- extends the upper lumbar vertebrae and derotates the thoracic vertebrae

Longissimus Capitus/ Cervicis - (in picture #2)

Longissimus Thoracis- extends and laterally flexes the lumbar vertebrae. Rotator of the thoracic vertebrae

attachments: cranial transverse processes of vertebrae T1 to T12, ribs 3 to 12 proximal to costal angles, caudal transverse processes of vertebrae L1 to L5, the quadratus lumborum fascia and the lumbodorsal fascia

Iliocostalis Cervis- extends and laterally flexes the cervical vertebrae

attachments: cranial posterior tubercles of the transverse processes of vertebrae C4 - C6, caudal angles of ribs 3 to 6

Iliocostalis Thoracis-rotates thoracic vertebrae to the same side

attachments: cranial angles to ribs 1 to 6, caudal ribs 7 to 12 medial to costal angles

Iliocostalis Lumborum- extends and laterally flexes the lumbar vertebrae, same side rotator of the lower thoracic vertebrae

attachments: axial angles of ribs 7 to 12, lubodorsal fascia, pelvic medial iliac crest

#4.   Front View

Obliquus externus abdominis (explained above)

Rectus abdominis