Author: Niamh Gorman MSc•Reviewer: Adrian Rad BSc (Hons)Last reviewed: October 22, 2021Reading time: 31 minutes

You are watching: What is trunk in human body


Ventral trunk muscles (overview)

The stems (torso) is the central part that the human body to i m sorry the head and the limbs room attached. Other than for the brain, the trunk dwellings all the an essential organs that the human body. The torso muscles attach to the skeletal main point of the trunk, and also depending on their location are separated into two big groups:

anterolateral muscle of the trunkposterior muscles of the trunk

Trunk muscles have a couple of very necessary functions; they add to the defense of the thoracic and abdominopelvic viscera and also they assist essential body activities such together breathing, movement, defecation and micturition.

Key facts around muscles that the trunk
Anterior thoracic musclesPectoralis major, pectoralis minor, serratus anterior, subclavius, outside intercostals, inner intercostals, innermost intercostals, subcostals, transversus thoracis, diaphragm
Anterolateral abdominal wall musclesRectus abdominis, external abdominal oblique, internal abdominal muscle oblique, transversus abdominis, pyramidalis, quadratus lumborum
Suboccipital musclesRectus capitis posterior major, rectus capitis posterior minor, obliquus capitis superior, obliquus capitis inferior
Posterior superficial musclesSuperficial: Latissimus dorsi, trapezius, rhomboid significant and minor, levator scapulaeIntermediate: Serratus posterior superior and also inferior
Posterior deep musclesSuperficial: Spinotransversales team (splenius capitis, splenius cervicis) Intermediate: Erector spinae team (iliocostalis, longissimus, spinalis)Deep: Transversospinal muscle (semispinalis, multifidus, rotatores longus and brevis) Deepest: Interspinales, intertransversarii and also levatores costarum 

This short article will provide you an overview of the torso musculature and also serve you together a hub indigenous which you can hop into much more detailed topics concerned trunk anatomy. 

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Anterolateral trunk muscles diagram

The anterior trunk muscle cover the anterolateral part of the tribe by attaching to the bony structure of the thoracic cage and also pelvis. These muscles are grouped right into the muscle of the thoracic cage and also the muscle of the abdominal muscle wall. 

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muscles of the thoracic cage

The muscle of the thoracic cage room the pectoralis major, pectoralis minor, serratus anterior, subclavius, intercostal (external, internal and also innermost), subcostal and transversus thoracis muscles, including the diaphragm.

this muscles connect the top limb to the axial skeleton of the trunk and support the thoracic cage. They are also involved in activities of the top limb and in respiration.