Trunk Muscles: Origin, Insertion, Action & Nerve
70 muscles: origin, insertion, action & nerve.
Study the 70 Trunk muscles, covering the back, thoracic, and abdominal groups, with verified origin, insertion, action, and nerve data. Use OIANS anatomy flashcards and the muscle origin and insertion quiz to build confident recall for your anatomy practical exam.
Back
- Trapezius (*Traps)
- Latissimus Dorsi (*Lats)
- Erector Spinae
- Splenius Capitis
- Iliocostalis Cervicis
- Iliocostalis Lumborum
- Iliocostalis Thoracis
- Longissimus Capitis
- Longissimus Cervicis
- Longissimus Thoracis
- Longissimus Thoracis (Lumbar Part)
- Spinalis Capitis
- Spinalis Cervicis
- Spinalis Thoracis
- Semispinalis Thoracis
- Semispinalis Cervicis
- Semispinalis Capitis
- Multifidus Lumborum
- Multifidus Thoracis
- Multifidus Cervicis
- Rotatores Longi (Thoracis)
- Rotatores Breves (Thoracis)
- Rotatores Lumborum
- Rotatores Cervicis
- Interspinales Lumborum 1–4
- Interspinales Thoracis 1–3
- Interspinales Cervicis 1–6
- Intertransversarii Anteriores Cervicis 1–7
- Intertransversarii Posteriores Laterales Cervicis 1–7
- Intertransversarii Posteriores Mediales Cervicis 1–7
- Intertransversarii Laterales Lumborum (Dorsal Parts) 1–5
- Intertransversarii Laterales Lumborum (Ventral Parts) 1–5
- Intertransversarii Mediales Lumborum 1–5
- Intertransversarii Thoracis 1–9
- Splenius Cervicis
- Trapezius Upper (Descending Part)
- Trapezius Middle (Transverse Part)
- Trapezius Lower (Ascending Part)
Thorax
Abdomen
Pelvis & Perineum
- Coccygeus
- Iliococcygeus
- Pubococcygeus
- Puboanalis (Puborectalis)
- Puboperinealis
- Puboprostaticus (males) / Pubovaginalis (females)
- External Anal Sphincter (Subcutaneous, Superficial and Deep Parts)
- Superficial Transverse Perineal
- Bulbospongiosus
- Ischiocavernosus
- Deep Transverse Perineal
- Compressor Urethrae
- Sphincter Urethrovaginalis
- External Urethral Sphincter