Trunk, Neck and Back Origins and Insertions (BYU EXSC 440 Lab)

Rectus abdominis origin

1. Pubic crest

2. Pubic symphysis

Rectus abdominis insertion

1. Xiphoid process

2. Costal cartilage of ribs 5-7

External oblique origin

Outer surface of ribs 5-12

External oblique insertion

1. Anterior half of iliac crest

2. Linea alba

Internal oblique origin

1. Lateral third of inguinal ligament

2. Anterior half of iliac crest

3. Thoracolumbar fascia

Internal oblique insertion

1. Inferior borders of ribs 10-12

2. Linea alba

Transversus abdominis origin

1. Iliac crest

2. Lateral third of inguinal ligament

3. Thoracolumbar fascia

4. Cartilage of ribs 7-12

Transversus abdominis insertion

1. Linea alba

2. Pubic crest

Quadratus lumborum origin

Iliac crest

Quadratus lumborum insertion

1. Last rib

2. Transverse processes of L1-L4

Diaphragm origin

1. Cartilage of ribs 7-12, inner surfaces

2. Lumbar vertebrae

3. Xiphoid process

Diaphragm insertion

Central tendon

External intercostal origin

Inferior border of rib

External intercostal insertion

Superior border of next lower rib

Internal intercostal origin

Inferior border of rib

Internal intercostal insertion

Superior border of next lower rib

Sternocleidomastoid sternal head origin

Superior manubrium

Sternocleidomastoid clavicular head origin

Medial 1/3 of clavicle

Sternocleidomastoid insertion

1. Mastoid process of temporal bone

2. Lateral superior nuchal line

Longus coli origin

Anterior surface of bodies of cervical and upper thoracic vertebrae

Longus colli insertion

Transverse processes of upper cervical vertebrae

Anterior scalene origin

Transverse processes of C3-C6

Anterior scalene insertion

Inner border of 1st rib

Middle scalene origin

Transverse processes of C2-C7

Middle scalene insertion

Upper surface of 1st rib

Posterior scalene origin

Transverse processes of C4-C6

Posterior scalene insertion

Outer surface of 2nd rib

Rectus capitis posterior major origin

Spinous process of C2

Rectus capitis posterior major insertion

Lateral part of inferior nuchal line

Rectus capitis posterior minor origin

Posterior arch of C1

Rectus capitis posterior minor insertion

Medial part of inferior nuchal line

Obliquus capitis superior origin

Transverse process of C1

Obliquus capitis superior insertion

Between the superior and inferior nuchal lines

Obliquus capitis inferior origin

Spinous process of C2

Obliquus capitis inferior insertion

Transverse process of C1