What Muscles Attach To The Scapula Of A Horse?

The first group of muscles attaching the scapula to the thorax are lie on the lateral and medial aspects of the scapula. These include the Trapezius, Omotransversarius, Rhomboideus, Latissimus Dorsi and Serratus ventralis.

What is the scapula in a horse?

The scapula is a plate of bone positioned on the side of the horse from the withers to the point of the shoulder, where it joins the upper arm bone (humerus) to form the shoulder joint.

Is the scapula attached to the skeleton on a horse?

Cartilage of scapula – Cartilago scapulae
The scapular cartilage (small in carnivores) is attached to the dorsal border of the scapula and may extend over the level of whiters (in horses). It serves for attachment of scapular muscles and may be partially calcified.

Where is the scapula on the horse?

Your horse’s shoulder blade (scapula) is a large paddle-shaped bone connected to his upper leg bone.

What muscles attach the scapula to the thorax?

Serratus anterior

• Function: fixes the scapula into the thoracic wall, and aids in rotation and abduction of the arm (90 to 180 degrees)
• Origin: Surface of the upper eight ribs at the side of the chest.
• Insertion: Along the entire anterior length of the medial border of the scapula.

What does the rhomboid muscle do in a horse?

The rhomboid muscle lifts the scapula and turns the scapula to cranial. Dorsal branches of the cervical nerves and a special branch from the brachial plexus (dorsal nerve of the scapula) innervate the muscle (Fig. 10.5). The muscle covers the dorsoscapular ligament, which is unique in the horse.

What is the function of the scapula?

The scapula is an important bone in the function of the shoulder joint. It engages in 6 types of motion, which allow for full-functional upper extremity movement including protraction, retraction, elevation, depression, upward rotation, and downward rotation.

Which muscles attach the scapula to the axial skeleton?

The medial/vertebral border of the human scapula is the longest of the three borders and serves as the insertion point for four muscles connecting the scapula to the axial skeleton: one connects it to the costal surface (serratus anterior) and three to the medial/cranial aspect (major and minor rhomboids, and levator

What is attached to shoulder blade?

There are ligaments that connect the shoulder blade (scapula) to the Humerus which include: coracohumeral ligament and the glenohumeral ligaments (superior, middle and inferior). helping absorb forces transmitted into the acromion by large muscles like the deltoid and trapezius.

How is the scapula connected to the rest of the skeleton?

It arches over the glenohumeral joint and articulates with the lateral acromial end of the clavicle to make up the synovial acromioclavicular joint. This joint is supported by the acromioclavicular ligament which attaches to the acromion process at one end and the clavicle at the other.

What does the supraspinatus muscle do in a horse?

This muscle is deep to the deltoid (underneath). The supraspinatus originates at the scapula and inserts on the humerus. Function: Extends the shoulder.

Why is my horse sore in the shoulder?

Direct trauma to the point of the shoulder, underlying bone cysts, or an injury to the biceps tendon usually causes the inflammation. Occasionally, the inflammation arises from a bacterial or fungal infection (called septic bursitis) or from an unknown cause (called idiopathic primary bursitis).

Can a horse recover from a shoulder injury?

Although most horses recover their ability to move normally, atrophy of the muscles overlying the shoulder blade will usually be permanent and the horse will have the characteristic boney protrusion of the shoulder area associated with equine shoulder Sweeney for the remainder of its life.

What are the 7 scapular muscles?

Course Description: Scapular Muscles
The muscles that move the scapula (shoulder blade) and shoulder girdle (scapulothoracic joint, acromioclavicular joint, and sternoclavicular joint) include the pectoralis minor, rhomboids, serratus anterior, trapezius, and levator scapulae.

What muscle runs along your scapula?

Levator scapulae, a smaller muscle that starts at the side of your neck and extends to the scapula (shoulder blade). Rhomboids, two muscles that connect the scapula to the spine. Trapezius (traps), which start at your neck, go across your shoulders and extend to a “V” in your lower back.

What muscle does not attach to scapula?

latissimus dorsi
The muscle that does not attach to the scapula is the latissimus dorsi. The attachment via the latissimus dorsi can be either a few fibers or absent completely.

What happens when rhomboids are weak?

If the rhomboids are weak or injured, a person might experience chronic back pain. “If you strengthen your shoulders and pectoral muscles but you don’t balance that by strengthening your rhomboids, you risk impingement in your shoulder,” Mueller said.

What two muscles Antagonise the rhomboids?

The rhomboids work collectively with the levator scapulae muscles to elevate the medial border of the scapula, downwardly rotating the scapula with respect to the glenohumeral joint. Antagonists to this function (upward rotators of the scapulae) are the serratus anterior and lower fibers of the trapezius.

Where are the rhomboids on the horse?

neck
The Rhomboid is a deep muscle is located in the top line of the horse’s neck. The cervical portion of the muscle originates from the funicular cord of the Nuchal Ligament and the thoracic portion attaches at the spinous processes of T2-T7.

What does the scapula do in animals?

The scapula is a thick, flat bone lying on the thoracic wall that provides an attachment for three groups of muscles: intrinsic, extrinsic, and stabilizing and rotating muscles.

What is the difference between shoulder blade and scapula?

The scapula, or shoulder blade, is a large triangular-shaped bone that lies in the upper back. The bone is surrounded and supported by a complex system of muscles that work together to help you move your arm.