TRIANGULAR MUSCLE Meaning and
Definition
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A triangular muscle, also known as a deltoid muscle, is a large, three-sided muscle located in the upper arm and shoulder region. It derives its name from the Greek letter "delta," which coincidentally resembles a triangle in shape. The triangular muscle is one of the major muscles of the shoulder joint and plays a crucial role in the movement and stabilization of the arm.
Anatomically, the triangular muscle consists of three distinct fiber groups: the anterior or front deltoid, the middle deltoid, and the posterior or rear deltoid. These three segments originate from different parts of the shoulder girdle and converge into a common insertion point on the outer side of the arm.
The front deltoid assists in the flexion and medial rotation of the arm, such as bringing the arm forward or raising it above the head. The middle deltoid aids in the abduction or lateral movement of the arm away from the body. Lastly, the rear deltoid contributes to the extension and lateral rotation of the arm, for instance, pulling the arm backwards or swinging it to the side.
Strong and well-developed triangular muscles are essential for maintaining shoulder stability and enabling various arm movements. They are often targeted through exercises such as shoulder presses, lateral raises, and reverse flyes to promote strength, mobility, and aesthetic appearance in the upper body.
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A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for TRIANGULAR MUSCLE
- rriangular muscle
- friangular muscle
- griangular muscle
- yriangular muscle
- 6riangular muscle
- 5riangular muscle
- teiangular muscle
- tdiangular muscle
- tfiangular muscle
- ttiangular muscle
- t5iangular muscle
- t4iangular muscle
- truangular muscle
- trjangular muscle
- trkangular muscle
- troangular muscle
- tr9angular muscle
- tr8angular muscle
- trizngular muscle
- trisngular muscle
Etymology of TRIANGULAR MUSCLE
The word "triangular muscle" is a term used in anatomy to describe muscles that have a triangular shape. The etymology of the word "triangular" can be traced back to the Latin word "triangulum". "Triangulum" is a noun derived from the Latin words "tri-" meaning three and "angulum" meaning angle.
The term "triangular muscle" is often used to refer to specific muscles in the human body, such as the deltoid muscle in the shoulder, which is shaped like a triangle. The use of the term in this context is likely based on the shape resemblance to a triangle.
Overall, the etymology of the word "triangular muscle" is closely related to the Latin roots of "triangulum", which means three angles. The term is used to describe muscles that have a triangular shape.
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