Overview The serratus anterior has complex and variable anatomy. It is a broad, flat muscle with multiple bellies. It usually has eight sections, connecting the scapula’s vertebral border to each of the first eight ribs. Therefore, this structure makes it an extrinsic chest muscle. It is on the lateral trunk, under the scapula, extending like […]
Overview Pectoralis minor is a fan-shaped muscle in the front of the shoulder. Notably, its anatomy has frequent variations. Basically, it secures the coracoid process of the scapula to the rib cage. Superficially, the pectoralis major covers the pectoralis minor. Overview of Pectoralis Minor Anatomy Origin Insertion Function Innervation Anomalies are clinically significant on attachments and innervation.
Here, you will find the anatomy of the pectoralis major, including functional considerations, variations and links to related posts. Overview The Pectoralis major is a large, flat muscle on the anterior thorax. It originates on the anterior axial skeleton. Then, with a twist, it inserts on the proximal humerus. Origin Insertion Function Nerve The extensive
Overview The anatomy of the psoas minor muscle is highly variable. However, when it is present, it can be a significant bodywork concern. Origin Insertion Function Innervation One study shows that it is present in about 87% of white cadavers and 8% of black cadavers. Other studies vary in their claims, often showing that it
The Iliopsoas Complex is a set of muscles on the back wall of the abdomen. They primarily flex the hip but also help with lateral flexion of the trunk. Many studies vary in their explanation of how they work, especially when they are trigger point laden. They seem to adjust tension based on many factors,
Overview The anatomy of the iliacus is the simplest of the hip flexors. Origin Insertion Function Innervation Iliacus is the most direct and straightforward hip flexor connecting the coxal bone to the femur as it passes over the hip joint. It is part of the iliopsoas complex or deep abdominals. It is a flat triangular
Here, I discuss assessment of the muscle that is causing pain and restrictions in your yoga poses by understanding the underlying anatomy. I discuss several other posts that may be helpful in a deeper understanding of this particular problem, how to use these anatomy illustrations, and related patterns. I am in the process of building
Here you will find the anatomy of the psoas major. It fits into a larger group of muscles, the iliopsoas complex. There is a grid of related posts at the end of this post. Overview The anatomy of psoas major is complex, and its functions are fodder for endless bodywork discussions. Origin Psoas major originates
The Deltoid is a three-headed muscle that forms the rounded bulk of the shoulder. It is named after the Greek letter delta, which it resembles. Brief Anatomy Overview Origin lateral third of the clavicle, acromion and spine fo the scapula Insertion deltoid tuberosity of the humerus Function abduction of the humerus, strongest in slight medial
The coracobrachialis is a long muscle on the upper, inside edge of the upper arm. Origin Insertion Function Innervation The coracobrachialis is typically a long single belly but does have clinically significant variations. The coracobrachialis is one of three muscles that attach to the coracoid process of the scapula. It usually attaches to the
