Vertebral column - OIAI

Sternocleidomastoid

O: Manubrium, medial ⅓ of clavicle

I: Mastoid process

A: Flexion, Lateral flexion, Extension of neck; Lateral flexion of spine

I: Accessory nerve

Trapezius

O: Occipital bone, Spinous processes of vertebrae

I: Lateral third of clavicle, Acromion processes, Spine of scapula

A: Elevation, Retraction at shoulder girdle

I: Spinal accessory nerve

Anterior scalene

O: Transverse processes

I: Scalene tubercle of rib 1

A: Elevation of ribs 1-2; Lateral flexion of neck and spine

I: Spinal nerves

Middle scalene

O: Transverse processes

I: Scalene tubercle of rib 1

A: Elevation of ribs 1-2; Lateral flexion of neck and spine

I: Spinal nerves

Posterior scalene

O: Transverse processes

I: Rib 2

A: Elevation of ribs 1-2; Lateral flexion of neck

I: Spinal nerves

Internal intercostals

O: Superior border of ribs

I: Inferior of ribs

A: Depression of ribs

I: Intercostal nerves

External intercostals

O: Lower border of ribs

I: Upper border of ribs

A: Elevation of ribs

I: Intercostal nerves

Rectus abdominus

O: Pubic crest

I: Pubis, Ribs, Xiphoid process

A: Flexion of spine

I: Spinal nerves

External oblique

O: Sternum, Ribs

I: Pubis, Linea alba, Iliac crest

A: Flexion, Lateral flexion, Lateral rotation of spine

I: Spinal nerves

Internal oblique

O: Lateral ½ of inguinal ligament, Iliac crest

I: Ribs, Linea alba

A: Flexion, Lateral flexion, Lateral rotation of spine

I: Spinal nerves

Transversus abdominis

O: Lateral ⅓ of inguinal ligament, Iliac crest, Ribs

I: Linea alba

A: Lateral rotation of spine

I: Spinal nerves

Diaphragm

O: Xiphoid process; Ribs; lumbar vertebrae

I: Central tendon of diaphragm

A: Expansion of thoracic cavity; Compression of abdominal cavity

I: Phrenic nerve

Spinalis

O: Spinous processes

I: Spinous processes

A: Extension and Lateral Flexion of spine

I: Spinal nerves

Longissimus

O: Transverse processes

I: Transverse processes

A: Extension and Lateral Flexion of spine

I: Spinal nerves

Iliocostalis

O: liac crest

I: ribs

A: Extension and Lateral Flexion of spine

I: Spinal nerves

Quadratus lumborum

O: Iliac crest

I: Rib 12, Transverse processes

A: Depression of the 12th rib; Lateral flexion of the spine

I: Spinal nerves

splenius capitis

O: vertebrae

I: temporal bone

A: extension, lateral flexion at spine; head rotation

I: spinal nerves