Human Model – Torso, 24 Parts, Bisexual, Open Back

Quick Answer: This 24 part torso model, listed as Human Model – Torso, 24 Parts, Bisexual, Open Back, is a torso with removable organs that can be shown as male or female using interchangeable genital parts, with the back opened to reveal the vertebral column. It is used in detailed anatomy, nursing and senior biology teaching.

What Bisexual and Open Back Mean Here

In anatomical model catalogues, bisexual describes a dual-sex torso: it comes with interchangeable male and female genital sections, so one model can be used to teach either set of reproductive organs. Open back means the back of the torso is cut away to show structures that are usually hidden from the front, typically the vertebral column with the spinal cord and the nerves leaving it, and in many designs the back muscles or kidneys.

With twenty-four parts, the torso can be taken apart in stages. Removing organs layer by layer from the front shows how the thoracic and abdominal organs overlap: lungs around the heart, the liver over the stomach, the intestines filling the lower abdomen, and the kidneys and great vessels lying deepest against the back wall. The exact list of the 24 parts, including whether the head opens to show the brain, varies between makers and should be confirmed at enquiry.

Compared with torsos with fewer parts, this model suits courses that need both reproductive systems and a posterior view without buying separate models. The simpler full-size torso with 9 parts covers the main organs for general teaching. With so many pieces, a numbered layout sheet or a photograph of the assembled torso makes it much easier for students to put it back together.

Specifications

Applications

• Teaching the arrangement of thoracic and abdominal organs in layers
• Covering male and female reproductive anatomy with one model
• Showing the vertebral column and spinal cord from behind
• Practical anatomy assessments in nursing and paramedical courses

Care & Handling

• Remove the parts of the 24 part torso model in a set order, lay them on a tray, and reassemble in reverse order.
• Keep the unused genital section in a labelled bag so it is not lost between lessons.
• Store the torso upright on its base under a dust cover, away from direct sunlight.
• Count the parts back after each class; a missing small part leaves gaps in the layers.

Why Choose LabEquip

Nursing colleges and medical anatomy departments that want one flexible torso for both sexes and the back view often choose a dual-sex, open-back model. LabEquip lists it among its biology lab products; send your requirements through the LabEquip contact page.

Frequently Asked Questions

What does bisexual mean for a torso model?

It means a dual-sex torso. The model comes with interchangeable male and female genital sections, so it can show either reproductive system.

What does the open back show?

The back is cut away to expose structures behind the organs, usually the vertebral column, spinal cord and spinal nerves. The exact posterior detail depends on the model.

Why choose 24 parts over a simpler torso?

More parts means the organs can be removed in more layers and both reproductive systems can be shown. A simpler torso is easier to handle but shows less.

Does the torso include the head?

Most torso models of this type include a head and neck, and many open to show the brain. Whether the head on this model opens should be confirmed when enquiring.

How do I keep track of all the parts?

Photograph the assembled torso and number the parts on a layout sheet. Remove and replace them in a fixed order, and count them back after each lesson.

Which organs lie deepest in the torso?

The kidneys, the aorta and inferior vena cava, and the pancreas lie deepest against the back wall of the abdomen. They are exposed after the intestines and stomach are removed.

Last Updated: September 2026