AXILLARY TRIANGLE Meaning and
Definition
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The axillary triangle, also known as the triangular space, is a region located in the human body in the upper limb. It is formed by the convergence of several muscular and anatomical structures in the axilla, or armpit, between the upper part of the arm and the lateral side of the chest.
The axillary triangle is bordered by three major muscle groups and one bone. The superior border is formed by the lower edge of the teres major muscle, which is located at the back of the upper arm. The medial border is defined by the long head of the triceps brachii muscle, which extends from the humerus bone to the shoulder blade. The lateral border is marked by the lateral border of the long head of the triceps brachii muscle, which forms the outer boundary of the triangle.
Within the axillary triangle, several key structures can be found. These include the axillary artery, which supplies blood to the upper limb, and its branches, such as the subscapular artery and the anterior and posterior circumflex humeral arteries. The axillary vein, responsible for returning blood from the upper limb, can also be found within this region. Additionally, the cords of the brachial plexus, a complex network of nerves that innervate the upper limb, pass through the axillary triangle.
Overall, the axillary triangle plays an important role in the anatomy of the upper limb, housing vital vascular and nervous structures that are essential for the proper functioning of the arm.
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A triangular area embracing the inner aspect of the arm, the axilla, and the pectoral region which is one of the seats of predilection for the petechial initial rash of smallpox.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for AXILLARY TRIANGLE
- zxillary triangle
- sxillary triangle
- wxillary triangle
- qxillary triangle
- azillary triangle
- acillary triangle
- adillary triangle
- asillary triangle
- axullary triangle
- axjllary triangle
- axkllary triangle
- axollary triangle
- ax9llary triangle
- ax8llary triangle
- axiklary triangle
- axiplary triangle
- axiolary triangle
- axilkary triangle
- axilpary triangle
- axiloary triangle
Etymology of AXILLARY TRIANGLE
The word "axillary" is derived from the Latin word "axilla", which means armpit or the cavity beneath the junction of the arm and shoulder. The term "triangle" refers to a geometric shape with three sides. Therefore, the term "axillary triangle" is used to describe the triangular area located in the armpit region.
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