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Dog · Muscle · Thoracic limb

Medial head of the triceps

Musculus triceps brachii caput mediale

Extends the elbow.

System
Muscle
Region
Thoracic limb
Sides
Paired: left and right

Where it runs from and to

A muscle is told apart from its neighbours by what it takes hold of at each end, which is also what decides what it does when it shortens.

Origin
Inner face of the humerus, along the ridge that runs down from the lesser tubercle.
Insertion
The olecranon, with the other heads.
Action
Extends the elbow.
Nerve
Radial nerve.

Written for Vetomica in its own words from the standard reference anatomy of the dog; the books it was checked against are listed below.

What it works on

Bones it takes hold of

Muscles and ligaments it works with

  • Triceps brachii long head
  • Triceps brachii accessory head
  • Biceps muscle of the arm
  • Coracobrachialis
  • Tensor fasciae antebrachii

Terminology

English
Medial head of the triceps
Latin (NAV)
Musculus triceps brachii caput mediale
Status
A valid term in the Nomina Anatomica Veterinaria

References

Where to read this structure in full, and where the named parts above were read.

  • NAV 2017Myologia: musculi membri thoracici
  • Miller's Anatomy of the Dog, 5th ed.The Muscular System: muscles of the thoracic limb
  • König & LiebichMuscles of the thoracic limb
  • Dyce, Sack & WensingThe forelimb of the carnivores
  • Miller 2020 (book pass)ch. 6 The Muscular System, PDF p. 568