Biceps muscle of the arm

Musculus biceps brachii

  • Muscle
  • Front leg
  • Paired: left and right
  • Horse

Flexes the elbow and fixes the shoulder in extension; the lacertus helps the stay apparatus keep the carpus straight.

About the biceps muscle of the arm of the horse

Biceps muscle of the arm is a muscle of the front leg (thoracic limb), one on each side of the body. Its name in the Nomina Anatomica Veterinaria is Musculus biceps brachii. You can turn it above, see it in place in the front leg of the horse, 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
The scapula's supraglenoid tubercle, by a tendon that runs in the intertubercular groove of the humerus.
Insertion
Radial tuberosity; a tendinous band from it, the lacertus fibrosus, joins the extensor carpi radialis.
Action
Flexes the elbow and fixes the shoulder in extension; the lacertus helps the stay apparatus keep the carpus straight.
Nerve
Musculocutaneous nerve.

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

Terminology

English
Biceps muscle of the arm
Latin (NAV)
Musculus biceps brachii
Status
A valid term in the Nomina Anatomica Veterinaria

The biceps muscle of the arm in other animals

The same structure in the other animals in the Library, to compare.

Questions about the biceps muscle of the arm

What is the Latin name of the biceps muscle of the arm?
In the Nomina Anatomica Veterinaria, the biceps muscle of the arm is called Musculus biceps brachii.
Where is the biceps muscle of the arm of the horse?
Biceps muscle of the arm is a muscle of the front leg (thoracic limb), one on each side of the body.
Where does the biceps muscle of the arm originate and insert?
Origin: The scapula's supraglenoid tubercle, by a tendon that runs in the intertubercular groove of the humerus. Insertion: Radial tuberosity; a tendinous band from it, the lacertus fibrosus, joins the extensor carpi radialis.
What nerve supplies the biceps muscle of the arm?
Musculocutaneous nerve.
What does the biceps muscle of the arm do?
Flexes the elbow and fixes the shoulder in extension; the lacertus helps the stay apparatus keep the carpus straight.

See the biceps muscle of the arm inside the whole horse.

Vetomica opens on this structure with every layer of the horse 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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