Maximus Gage
The scapula, or shoulder blade, is a flat, triangular bone that forms the posterior portion of the shoulder girdle. It is the foundation of the upper body's soft-tissue structures and is connected to 17 muscles, 12 tendons, six ligaments and two nerves. These connections allow the shoulder to move in six directions, more than any other joint in the body.
| Characteristics | Values |
|---|---|
| Number of muscles attached | 17 or 18 |
| Number of tendons attached | 12 |
| Number of ligaments attached | 6 |
| Number of nerves attached | 2 |
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What You'll Learn
- The scapula is a flat, triangular bone that forms the posterior portion of the shoulder girdle
- Seventeen muscles attach to the scapula
- The long and the short head of the biceps brachii attach to different locations of the scapula
- Shoulder injuries can arise from restrictions, injuries, or imbalances in any of these muscles
- The scapula is connected to 12 tendons, six ligaments and two nerves
The scapula is a flat, triangular bone that forms the posterior portion of the shoulder girdle
The scapula is a crucial bone in the shoulder girdle, providing support and stability to the upper body's soft-tissue structures. It is often referred to as the shoulder blade and plays a vital role in maintaining the complex structure and function of the shoulder. The seventeen muscles attached to the scapula contribute to the overall stability and mobility of the shoulder girdle, allowing the shoulder to move in six directions—more than any other joint in the body.
Understanding the roles and interrelationships of these muscles is essential for addressing shoulder injuries and dysfunctions. Ensuring proper balance and functioning of these muscles can promote optimal shoulder health and effectively prevent or manage issues related to the "SICK" scapula syndrome. Abnormal motion patterns of the scapula, known as scapular dyskinesis, can result in considerable shoulder dysfunction.
While most sources agree that there are seventeen muscles attached to the scapula, some authors and websites argue that there are eighteen. This discrepancy arises from the fact that the biceps brachii, one of the muscles attached to the scapula, has two separate attachments to the bone. However, it is important to note that the biceps brachii is still considered a single muscle, and thus, the correct number of muscles attaching to the scapula is seventeen.
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Seventeen muscles attach to the scapula
The 17 muscles that attach to the scapula are:
- Biceps brachii
- Coracobrachialis
- Deltoid
- Infraspinatus
- Latissimus dorsi
- Levator scapulae
- Omohyoid (inferior belly)
- Pectoralis minor
- Rhomboid major
- Rhomboid minor
- Serratus anterior
- Subscapularis
- Supraspinatus
- Teres major
- Teres minor
- Trapezius
- Triceps brachii (long head)
Some authors and internet sources argue that there are 18 muscles that attach to the scapula, as the biceps brachii has two separate attachments to the scapula. However, others disagree, stating that the biceps brachii is a single muscle with two attachment points.
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The long and the short head of the biceps brachii attach to different locations of the scapula
The scapula is a flat, triangular bone that forms the posterior portion of the shoulder girdle. Seventeen muscles attach to the scapula, including the biceps brachii.
The biceps brachii is a single muscle that has two separate attachments to the scapula: the long head and the short head. These two heads attach to different locations on the scapula. This has led to some debate as to whether the biceps brachii should be counted as one or two muscles that attach to the scapula. Some authors and internet websites say that there are 18 muscles that attach to the scapula, counting the two heads of the biceps brachii separately. However, others disagree, arguing that the biceps brachii is a single muscle with two attachments.
The biceps brachii is a muscle that originates in the shoulder and inserts in the forearm. It is responsible for flexing the elbow and rotating the forearm. The long head of the biceps brachii attaches to the scapula at the supraglenoid tubercle, while the short head attaches to the coracoid process of the scapula. These two attachment points allow the biceps brachii to have a broad range of motion and contribute to the overall stability and mobility of the shoulder girdle.
The other 16 muscles that attach to the scapula include the coracobrachialis, deltoid, infraspinatus, latissimus dorsi, levator scapulae, omohyoid (inferior belly), pectoralis minor, rhomboid major, rhomboid minor, serratus anterior, subscapularis, supraspinatus, teres major, teres minor, trapezius, and triceps brachii (long head). These muscles work together with the biceps brachii to provide stability, mobility, and a wide range of motion to the shoulder girdle.
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Shoulder injuries can arise from restrictions, injuries, or imbalances in any of these muscles
Seventeen muscles attach to the scapula, which is a flat, triangular bone that forms the posterior portion of the shoulder girdle. These muscles are:
- Biceps brachii
- Coracobrachialis
- Deltoid
- Infraspinatus
- Latissimus dorsi
- Levator scapulae
- Omohyoid (inferior belly)
- Pectoralis minor
- Rhomboid major
- Rhomboid minor
- Serratus anterior
- Subscapularis
- Supraspinatus
- Teres major
- Teres minor
- Trapezius
- Triceps brachii (long head)
Because the long and the short head of the biceps brachii attach to different locations of the scapula, some authors and Internet websites say that there are 18 muscles that attach to the scapula. However, the biceps brachii is a single muscle that happens to have two separate attachments to the scapula.
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The scapula is connected to 12 tendons, six ligaments and two nerves
The scapula is connected to 17 muscles, 12 tendons, six ligaments and two nerves. These connections allow the shoulder to move in six directions, more than any other joint in the body.
The scapula is a flat, triangular bone that forms the posterior portion of the shoulder girdle. It is described with two surfaces, three borders, and three angles. The scapula attaches to the clavicle by way of the acromioclavicular joint and ligaments.
The 17 muscles that attach to the scapula are:
- Biceps brachii
- Coracobrachialis
- Deltoid
- Infraspinatus
- Latissimus dorsi
- Levator scapulae
- Omohyoid (inferior belly)
- Pectoralis minor
- Rhomboid major
- Rhomboid minor
- Serratus anterior
- Subscapularis
- Supraspinatus
- Teres major
- Teres minor
- Trapezius
- Triceps brachii (long head)
Because the long and the short head of the biceps brachii attach to different locations of the scapula, some authors and Internet websites say that there are 18 muscles that attach to the scapula. However, the biceps brachii is a single muscle that happens to have two separate attachments to the scapula.
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Frequently asked questions
Seventeen muscles attach to the scapula.
The 17 muscles are: biceps brachii, coracobrachialis, deltoid, infraspinatus, latissimus dorsi, levator scapulae, omohyoid (inferior belly), pectoralis minor, rhomboid major, rhomboid minor, serratus anterior, subscapularis, supraspinatus, teres major, teres minor, trapezius, and triceps brachii (long head).
The scapula is a flat, triangular bone that forms the posterior portion of the shoulder girdle. It is also known as the shoulder blade.
The scapula is the foundation or base of support for the upper body's soft-tissue structures. It is connected to 17 muscles, 12 tendons, six ligaments and two nerves. These connections allow the shoulder to move in six directions.
Shoulder dysfunctions can arise from restrictions, injuries, or imbalances in any of the 17 muscles attached to the scapula.
