gastrocnemius

The most superficial muscle of the triceps surae group, in the posterior portion of the lower hindleg. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the gastrocnemius is

The most superficial muscle of the triceps surae group, in the posterior portion of the lower hindleg. The atlas records it as a muscle at the organ scale in the human body.

Where the gastrocnemius is

It sits in the lower limb, within the muscular system. Positioned deliberately as part of this species body plan.

What the gastrocnemius connects to

The atlas records 14 typed relationships for it, across 10 kinds of connection. part of hindlimb zeugopod and triceps surae.

Supply and innervation

Venous drainage: gastrocnemius vein. Innervation: tibial nerve and sciatic nerve.

Also called

Also recorded as gastrocnemius muscle, m. gastrocnemius, m.gastrocnemius and musculus gastrocnemius. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0001388, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: hindlimb zeugopod and triceps surae.
• A kind of: hindlimb zeugopod muscle.
• Adjacent to: sesamoid bone of gastrocnemius.
• Innervated by: tibial nerve and sciatic nerve.
• inserts into: calcaneal tendon and calcaneus.
• contains: gastrocnemius lateralis and gastrocnemius medialis.
• antagonist of: tibialis anterior.
• contributes to morphology of: limb muscle.

Questions

Where is the gastrocnemius?

It sits in the lower limb, within the muscular system. Positioned deliberately as part of this species body plan.

What does the gastrocnemius connect to?

Part of: hindlimb zeugopod and triceps surae.

Is the gastrocnemius the same in other species?

Leumas holds the same relationship vocabulary for every species it carries, so where another dataset records this structure you can put the two side by side on /compare.