long bone in dogs

A long bone is a bone that has a shaft and 2 ends and is longer than it is wide. Long bones have a thick outside layer of compact bone and an inner medullary cavity containing bone marrow. The ends of a long bone contain spongy bone and an epiphyseal plate or line depending on the stage of development. The epiphyseal plate is a hyaline cartilage, where new bone growth takes place, lengthening the bone prior to adulthood. Bone lengthening ceases when this cartilage is lost, leaving a remnant referred to as an epiphyseal line. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the long bone is

A long bone is a bone that has a shaft and 2 ends and is longer than it is wide. Long bones have a thick outside layer of compact bone and an inner medullary cavity containing bone marrow. The ends of a long bone contain spongy bone and an epiphyseal plate or line depending on the stage of development. The epiphyseal plate is a hyaline cartilage, where new bone growth takes place, lengthening the bone prior to adulthood. Bone lengthening ceases when this cartilage is lost, leaving a remnant referred to as an epiphyseal line. The atlas records it as a bone at the organ scale in the dog.

Where the long bone is

It sits within the skeletal system. Only the system is known. The position shown carries almost no spatial information.

What the long bone connects to

The atlas records 19 typed relationships for it, across 5 kinds of connection. part of appendicular skeleton.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the long bone. Only a minority of structures carry those edges here, so an empty answer means nothing has been recorded — not that there is nothing to record.

Also called

Also recorded as os longum. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0002495, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: appendicular skeleton.
• A kind of: bone element.
• contains: compact bone of diaphysis, compact bone of long bone, cortex of humerus, endosteum, long bone epiphyseal ossification zone and medullary cavity of long bone, and 1 more.
• subtype: clavicle bone, fibula, humerus, limb long bone, metapodium bone and tibia.
• contributes to morphology of: appendicular skeleton, diaphysis proper, epiphysis and metaphysis.

Questions

Where is the long bone?

It sits within the skeletal system. Only the system is known. The position shown carries almost no spatial information.

What does the long bone connect to?

Part of: appendicular skeleton.

Is the long bone the same in other species?

This page describes the dog. The human record of the same structure sits beside it on /compare, over one shared model rather than two atlases built separately.