FMA527481 3D mesh
Mandible
The lower jawbone of the facial skeleton, supporting the lower dentition and articulating with the temporal bones to enable mastication.
Bones form the supporting framework of the body, protect organs, and provide attachment points for muscles. Their internal tissue also stores minerals and produces blood cells.
The BodyParts3D reference atlas includes 296 individual skeletal pieces across 292 FMA concepts, encompassing cranial bones, vertebrae, ribs, pelvic girdle, limb bones, and dentition.
Forms the rigid structural framework supporting the axial and appendicular body.
Encloses and protects delicate internal organs (such as the brain within the cranium and thoracic viscera within the rib cage).
Provides mechanical levers and attachment surfaces for skeletal muscles to generate movement.
Stores essential minerals and houses bone marrow tissue that produces blood cells.
Review the primary anatomical landmarks below. Click Learn more to open the dedicated page for each structure, or click Select in 3D to inspect it on the interactive 3D model.
The lower jawbone of the facial skeleton, supporting the lower dentition and articulating with the temporal bones to enable mastication.
The first cervical vertebra (C1), supporting the base of the skull and permitting flexion and extension at the craniocervical junction.
The second cervical vertebra (C2), featuring the odontoid process (dens) around which the atlas rotates to turn the head.
The broad superior segment of the sternum that articulates with the clavicles and the first two pairs of ribs in the anterior thoracic wall.
A triangular bone at the base of the vertebral column formed by fused sacral vertebrae, transmitting axial weight to the pelvic girdle.
The proximal long bone of the lower limb extending from the hip joint to the knee, serving as a primary weight-bearing bone of the appendicular skeleton.
The medial weight-bearing bone of the lower leg, articulating superiorly with the femur and inferiorly with the talus at the ankle.
A U-shaped bone in the anterior neck suspended by muscles and ligaments, providing an attachment site for muscles of the tongue, pharynx, and larynx.
Every anatomical structure assigned to the Skeleton layer in atlas.json. Curated landmarks include a Learn more guide, and all 292 structures can be selected directly in the 3D viewer.
Launch the 3D viewer with the Skeleton activated. Orbit the camera, use the Exploded View slider to separate overlapping pieces, and click individual structures to inspect their FMA reference ID and anatomical metadata.
You have not selected any structures in the Skeleton inside the 3D viewer yet during this session. Click Explore in 3D or any structure card above to inspect a structure on the 3D model.
Bones provide both mechanical support and protective enclosures for vital organs.
Skeletal structures act as levers pulled by skeletal muscles via tendons.
Internal bone tissue stores minerals and produces blood cells.
Every modeled bone in the 3D atlas is mapped to a Foundational Model of Anatomy (FMA) identifier.
Skeletal muscles attach across bones and joints; when muscles contract, they pull on bony landmarks to produce movement and maintain posture.
Cartilage, ligaments, and joint capsules connect bones to one another, stabilize joints, and distribute mechanical loads across the skeleton.
The cranial vault and vertebral column form a protective bony enclosure around the brain and spinal cord.
Select an answer for each question below to verify your understanding of the skeleton.