The scientific name for the armpit is "axilla." This term is commonly used in anatomy to describe the area under the joint where the shoulder connects to the body.
The plural form for the singular noun axilla is axillae.
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The pectoralis major muscle forms the anterior border of the axilla.
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Anterior dislocation of the shoulder occurs when the head of the humerus moves into the axilla. This injury typically causes pain, swelling, and restricted range of motion in the shoulder. Treatment may involve reducing the dislocation followed by physical therapy to regain strength and mobility.