MOINA - THORAX

M (Identify)

External Intercostals

O - External Intercostals

Lower (inferior) border of a rib

I - External Intercostals

Upper (superior) border of rib below

N -External Intercostals

Intercostal nerves

A - External Intercostals

Elevate ribs during inspiration; stabilize rib cage

M (Identify)

Internal Intercostals

O - Internal Intercostals

Inner surface (inferior) of a rib and costal cartilages

I - Internal Intercostals

Upper (superior) borders of the adjacent ribs below

N -Internal Intercostals

Intercostal nerves

A - Internal Intercostals

Draw ribs downward during forced Expiration; stabilize ribcage

M (Identify)

Transversus Thoracis

O - Transversus Thoracis

posterior lower sternum; Inner surfaces of the lower third of the body of the sternum and adjacent surfaces of the xiphoid process

I - Transversus Thoracis

2-6 costal cartilages; internal surfaces of the sternocostal joints associated with the second (or third) through the sixth ribs

N -Transversus Thoracis

Intercostal nerves

A - Transversus Thoracis

Depresses the ribs

M (Identify)

Quadratus Lumborum

O - Quadratus Lumborum

Iliolumbar ligament and crest of the ilium

I - Quadratus Lumborum

Rib 12 and tips of the transverse processes of the L1 to L4

A -Quadratus Lumborum

Extension and side flexion of lumbar spine, expiration

N - Quadratus Lumborum

Ventral ramus of spinal nerve roots T12-L3

M (Identify)

Psoas Major

O - Psoas Major

Transverse processes and lateral bodies of the last thoracic and all lumbar vertebrae including the intervertebral discs

I - Psoas Major

Lesser trochanter of femur

A -Psoas Major

Forward flexion and side flexion of lumbar spine, Flexion of the hip joint

N - Psoas Major

Branches of ventral rami L1-L3

M (Identify)

Iliacus

O - Iliacus

Superior two thirds of the iliac fossa, inner lip of the iliac crest

I - Iliacus

Lesser trochanter of femur

N -Iliacus

Femoral nerve

A -Iliacus

Flexion of hip joint

M (Identify)

Rectus Abdominis

O - Rectus Abdominis

Pubic crest and anterior pubic ligament

I - Rectus Abdominis

On the front of the wall of the thorax, along a horizontal line passing laterally from the xiphoid process, and cutting in that order, the 7th, 6th and 5th costal cartilages

N -Rectus Abdominis

Lower six or seven thoracic nerves

A - Rectus Abdominis

Expiration, Flexion of the spine

M (Identify)

External Oblique

O - External Oblique

Lateral side of ribs 4-12

I - External Oblique

Iliac crest, linea alba, and contralateral rectus sheaths

N -External Oblique

Lower six thoracic nerves

A -External Oblique

Bilaterally: flexion of the trunk and posterior tilt of the pelvis Unilaterally: lateral flexion and contralateral rotation of the trunk

M(Identify)

Internal Oblique

O - Internal Oblique

Iliac crest, inguinal ligament, and thoracolumbar fascia

I - Internal Oblique

Ribs 9-12, linea alba, and contralateral rectus sheaths

N -Internal Oblique

Lower six thoracic nerves and the first lumbar nerve

A -Internal Oblique

Unilaterally: lateral flexion and ipsilateral rotation of the trunk

Bilaterally: flexion of the trunk and posterior tilt of the pelvis

M (Identify)

Transversus Abdominis

O - Transversus Abdominis

Iliac crest, thoracolumbar fascia, inner surface of the cartilages of ribs 6-12 and the inguinal ligament

I - Transversus Abdominis

Linea alba

N -Transversus Abdominis

Lower six thoracic nerves and the first lumbar nerve

A -Transversus Abdominis

Bilaterally: stabilization of attachment sites for other abdominal muscles; compression of the abdominal cavit

M (identify)

Serratus posterior superior

O - Serratus posterior superior

spinous process C7-T3

I - Serratus posterior superior

superior borders 2nd-4th ribs

N - Serratus posterior superior

2nd-5th intercostal nerves

A - Serratus posterior superior

elevates upper 4 ribs (inspiratory muscle)

M (identify)

Serratus posterior inferior

O - Serratus posterior inferior

spinous process T11-L2

I -Serratus posterior inferior

inferior border 8-12th ribs

N - Serratus posterior inferior

9-12th thoracic spinal nerve

A - Serratus posterior inferior

depress the ribs (expiratory muscle); lower ribs

M (identify)

Levatores costarum

O - Levatores costarum

transverse process of vertebra

I - Levatores costarum

subjacent ribs

N - Levatores costarum

C8-11n

A - Levatores costarum

elevates ribs (inspiratory muscles)

M (identify)

Innermost intercostal

O - Innermost intercostal

adjacent ribs; inferior border of the ribs

I - Innermost intercostal

adjacent ribs; superior border of the ribs

N - Innermost intercostal

intercostal nerve

A - Innermost intercostal

assist internal and external intercostals; depress ribs

M (identify)

Subcostal

O - Subcostal

internal surface of lower ribs

I - Subcostal

superior border of the 2nd/3rd rib below

N - Subcostal

intercostal nerve

A - Subcostal

elevates ribs; same direction as internal intercostal

expiratory muscle; depress

“SPIIIT”

serratus posterior inferior

internal intercostal

innermost intercostal

transversus thoracis

inspiratory muscle; elevate

serratus posterior superior

levator costarum

external costarum

subcostal