Latissimus dorsi muscle

Musculus latissimus dorsi

  • Muscle
  • Body
  • Paired: left and right
  • Pig

Draws the limb caudally and flexes the shoulder.

About the latissimus dorsi muscle of the pig

Latissimus dorsi muscle is a muscle of the body (trunk), one on each side of the body. Its name in the Nomina Anatomica Veterinaria is Musculus latissimus dorsi. You can turn it above, see it in place in the body of the pig, and open it inside the whole animal in Vetomica.

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
Thoracolumbar fascia over the spinous processes of the thoracic and lumbar vertebrae.
Insertion
Teres major tuberosity on the medial surface of the humerus.
Action
Draws the limb caudally and flexes the shoulder.
Nerve
Thoracodorsal nerve.

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

Terminology

English
Latissimus dorsi muscle
Latin (NAV)
Musculus latissimus dorsi
Status
A valid term in the Nomina Anatomica Veterinaria

Questions about the latissimus dorsi muscle

What is the Latin name of the latissimus dorsi muscle?
In the Nomina Anatomica Veterinaria, the latissimus dorsi muscle is called Musculus latissimus dorsi.
Where is the latissimus dorsi muscle of the pig?
Latissimus dorsi muscle is a muscle of the body (trunk), one on each side of the body.
Where does the latissimus dorsi muscle originate and insert?
Origin: Thoracolumbar fascia over the spinous processes of the thoracic and lumbar vertebrae. Insertion: Teres major tuberosity on the medial surface of the humerus.
What nerve supplies the latissimus dorsi muscle?
Thoracodorsal nerve.
What does the latissimus dorsi muscle do?
Draws the limb caudally and flexes the shoulder.

See the latissimus dorsi muscle inside the whole pig.

Vetomica opens on this structure with every layer of the pig around it: peel back the skin and the muscles, cut a section through it, X-ray it, and practise naming it until you stop getting it wrong.

Free for 7 days, no card. After that the skeletons stay free.

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