The psoas minor is a long slender deep muscle that is "often absent"*.
When present, psoas minor muscles are located on each side (right and left) of the body, anterior to (that is, in front of) the corresponding psoas major muscle - which also originates in the lumbar (lower-back) part of the body.
The psoas minor is omitted from many lists and descriptions of muscles of the human body. When mentioned in older textbooks it is sometimes called the 'psoas parvus'.
Origin, Insertion and Actions of the Psoas Minor muscles:
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More about Muscles:
The following are some popular pages in the section about the human muscular system:
- The structure of muscle tissue
- The structure of muscle cells
- Labelled diagrams of the muscles in different parts of the body including anterior muscles, posterior muscles and facial muscles
- Types of muscle contractions
- Movements at joints
There are also more pages about the words used to describe muscles (terminology), the anatomy and physiology of muscles, muscular disorders and associated topics. See also books about sports medicine.
- Anterior Muscles
- Posterior Muscles
- Facial Muscles
- Muscle Terminology (Definitions)
- 1. Structure of Muscle
- 2. Structure of Muscle Cells
- 3. Muscle Filaments
- 4. Sliding Filament Theory
- 5. Neuromuscular Junction
- 6. Actions at Neuromuscular Junction
- Types of Muscle Contractions
- Muscular Disorders
- Effects of exercise on muscles