Innermost intercostal muscle

content

Innermost intercostal muscle
Latin	musculus intercostalis intimus
Origin
Insertion
Artery	intercostal arteries
Nerve	intercostal nerves
Action
Dorlands /Elsevier	m_22/12549384

The Innermost intercostal muscle is a layer of intercostal muscle beneath the intercostal nerves and internal intercostal muscles.

These are divided into transversus thoracis anteriorly, lateral muscle slips laterally and subcostalis posteriorly.

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v • d • e List of muscles of torso

BACK	splenius (capitis, cervicis) - erector spinae (iliocostalis, longissimus, spinalis) - latissimus dorsi transversospinales: (semispinalis dorsi, semispinalis cervicis, semispinalis capitis, multifidus, rotatores) - interspinales - intertransversarii

SUBOCCIPITAL	rectus capitis posterior (major, minor) - obliquus capitis (inferior, superior)

CHEST	intercostales (external, internal, innermost) - subcostales - transversus thoracis - levatores costarum - serratus posterior (inferior, superior) - diaphragm

ABDOMEN	anterior/lateral wall: obliques (external, internal) - transversus abdominis - rectus abdominis - pyramidalis posterior wall: quadratus lumborum - psoas major/psoas minor - iliacus cremaster

PELVIS/FLOOR	levator ani (iliococcygeus, pubococcygeus, puborectalis) - coccygeus

PERINEUM	anal triangle: sphincter ani (externus, internus) superficial perineal pouch (superficial transverse perineal, bulbospongiosus, ischiocavernosus) deep perineal pouch (deep transverse perineal, sphincter urethrae membranaceae)