Anterior axillary line
Anterior Axillary Line
The Anterior Axillary Line (pronunciation: an-TEER-ee-or AK-sil-er-ee line) is a line drawn vertically on the surface of the body to denote the position of structures lying beneath. It is one of the anatomical lines used to describe the location of structures or movements in the chest wall.
Etymology
The term "Anterior Axillary Line" is derived from the Latin words "anterior" meaning "before" and "axilla" meaning "armpit". The term "line" is derived from the Latin "linea" meaning "a thread or string".
Definition
The Anterior Axillary Line extends from the point midway between the anterior superior iliac spine and the pubic symphysis, up to the point midway between the pectoralis major muscle and the latissimus dorsi muscle at the level of the fourth intercostal space.
Related Terms
- Midaxillary Line: A line drawn vertically from the middle of the armpit to the ankle.
- Posterior Axillary Line: A line drawn vertically from the posterior fold of the armpit to the ankle.
- Axilla: The armpit or the cavity beneath the junction of the arm and shoulder.
- Intercostal Space: The space between two ribs.
- Pectoralis Major Muscle: A thick, fan-shaped muscle situated at the chest (anterior) of the human body.
- Latissimus Dorsi Muscle: A large, flat muscle on the back that stretches to the sides, behind the arm, and is partly covered by the trapezius on the back near the midline.
External links
- Medical encyclopedia article on Anterior axillary line
- Wikipedia's article - Anterior axillary line
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