Sternothyroid muscle

Musculus sternothyroideus

  • Muscle
  • Neck
  • Paired: left and right
  • Dog

Draws the larynx caudally.

About the sternothyroid muscle of the dog

Sternothyroid muscle is a muscle of the neck (neck), one on each side of the body. Its name in the Nomina Anatomica Veterinaria is Musculus sternothyroideus. You can turn it above, see it in place in the neck of the dog, 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
First costal cartilage and the manubrium of the sternum.
Insertion
Lamina of the thyroid cartilage of the larynx.
Action
Draws the larynx caudally.
Nerve
Ventral branches of the first and second cervical nerves.

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

Terminology

English
Sternothyroid muscle
Latin (NAV)
Musculus sternothyroideus
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
  • Miller's Anatomy of the Dog, 5th ed.The Muscular System: muscles of the head and neck (hyoid muscles)
  • Dyce, Sack & WensingThe head and ventral neck of the dog and cat
  • Miller 2020 (book pass)ch. 6 The Muscular System, PDF p. 496

Questions about the sternothyroid muscle

What is the Latin name of the sternothyroid muscle?
In the Nomina Anatomica Veterinaria, the sternothyroid muscle is called Musculus sternothyroideus.
Where is the sternothyroid muscle of the dog?
Sternothyroid muscle is a muscle of the neck (neck), one on each side of the body.
Which bones does the sternothyroid muscle attach to?
Sternothyroid muscle takes hold of Manubrium.
Where does the sternothyroid muscle originate and insert?
Origin: First costal cartilage and the manubrium of the sternum. Insertion: Lamina of the thyroid cartilage of the larynx.
What nerve supplies the sternothyroid muscle?
Ventral branches of the first and second cervical nerves.
What does the sternothyroid muscle do?
Draws the larynx caudally.

See the sternothyroid muscle inside the whole dog.

Vetomica opens on this structure with every layer of the dog 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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