The armpit, also known as the axilla, is the hollow area located beneath the shoulder joint where the upper arm connects to the torso. It is a complex region containing lymph nodes, blood vessels, nerves, and sweat glands. The armpit plays a role in regulating body temperature through sweat production and acts as a passage for lymphatic drainage. It is also a site where body odor can develop due to the presence of apocrine sweat glands. The armpit is an important anatomical area that serves both functional and physiological purposes in the human body.

英語での「armpit」の定義と意味

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