Torso Muscles

The human torso or trunk contains a number of muscles that participate in major body movements and the functioning of vital organs. Here is a list of all the muscles in this region:

Abdominal Muscles

Anterolateral Abdominal Muscles

Anterior Abdominal Muscles

1. Rectus abdominis
2. Pyramidalis

Lateral Abdominal Muscles

1. External oblique
2. Internal oblique
3. Transversus abdominis

Cremaster (Extension of the Internal Oblique)

Posterior Abdominal Wall Muscles

1. Quadratus Lumborum
2. Iliopsoas
   1. Psoas Major
   2. Psoas Minor
   3. Iliacus

Back Muscles

1. Splenius Muscles
   1. Splenius capitis
   2. Splenius cervicis
2. Erector spinae
   1. Spinalis
   2. Longissimus
   3. Iliocostalis
3. Transversospinales
   1. Semispinalis
      1. Semispinalis Capitis
      2. Semispinalis Cervicis
      3. Semispinalis Thoracis
   2. Multifidus
   3. Rotatores
4. Segmental Muscles (Minor Deep Muscles)
   1. Interspinales
   2. Intertransversarii

Spine Muscles (Muscles of the Vertebral Column)

1. Trapezius
2. Latissimus dorsi
3. Rhomboids
   1. Rhomboid major
   2. Rhomboid minor
4. Levator scapulae

Chest Muscles

1. Intercostals
   1. external
   2. internal
   3. innermost
2. Subcostalis
3. Transversus thoracis
4. Levatores costarum
5. Serratus posterior
   1. Serratus posterior inferior muscle
   2. Serratus posterior superior muscle
6. Diaphragm

Thoracic Wall Muscles

1. Pectoralis major
2. Pectoralis minor
3. Subclavius
4. Serratus anterior

Pelvic Floor Muscles

1. Coccygeus
2. Levator ani
   1. Iliococcygeus
   2. Pubococcygeus
   3. Puborectalis

Perineal Muscles

1. Superficial Perineal Pouch
   1. Bulbospongiosus
   2. Ischiocavernosus
   3. Superficial Transverse Perineal
2. Deep Perineal Pouch
   1. Deep Transverse Perineal
   2. External Urethral Sphincter
3. Sphincter Ani
   1. External anal sphincter
   2. Internal anal sphincter