The interactive dog atlas · Muscles · Trunk

Latissimus dorsi musculus latissimus dorsi

The latissimus dorsi is a broad sheet of muscle on the sides of the chest, behind the shoulder blade, from the loin to the upper arm.

Educational material, not a diagnostic tool. Written by the Mantrailing România team from veterinary sources we read. Updated 14.11.2026.

Dog in left lateral view — exterior, muscles, skeleton and organs Vector study after the Ellenberger, Baum and Dittrich plates: a standing dog, head to the left, deep chest and digitigrade limbs. The four layers use the same contour: exterior with body regions, superficial muscles, skeleton and organs.
Latissimus dorsi on the atlas drawing, "Muscles" layer. Left lateral view, after the Ellenberger, Baum and Dittrich plates.

Where it is

On the sides of the thorax, behind the shoulder blade, from the loin to the upper arm.

Layer
Muscles
System
Muscles
Region
Trunk

What it is and what it does

A broad muscular sheet that arises from the thoracolumbar fascia (the lumbar and last thoracic vertebrae, the last ribs) and converges on the teres major tuberosity of the humerus. It pulls the free limb backward and brakes its advance; in the greyhound it is among the muscles that produce most of the mechanical work of acceleration.

Worth remembering

It pulls the front leg backward; in the greyhound it is among the muscles that do most of the work of acceleration.

Names

  • Latin term: musculus latissimus dorsi.
  • In Romanian: Latissimus dorsi (marele dorsal) (Romanian page).

Guides it appears in