Underarm

Underarm or axilla refers to the area on the human body directly beneath the joint where the arm connects to the shoulder. It also provides the under-side of the shoulder and upper arm.

Anatomy

The underarm is part of the upper limb. It contains many important structures including the axillary vein, the axillary artery, the brachial plexus, and the axillary lymph nodes.

The skin in the underarm area can be more sensitive than the rest of the body, and it has more sweat glands. This is why people often experience excessive sweating or hyperhidrosis in this area.

Health and hygiene

Due to the high concentration of sweat glands, the underarm can produce a significant amount of sweat, which can lead to body odor. Regular washing, the use of antiperspirants and deodorants can help manage this.

The underarm is also a common site for the administration of certain vaccines, such as the influenza vaccine, and for the drawing of blood for certain medical tests.

Cultural aspects

In many cultures, it is common for people to remove underarm hair for aesthetic reasons. This can be done through shaving, waxing, or the use of hair removal creams. In other cultures, underarm hair is left natural.

See also

• Sweat gland
• Hyperhidrosis
• Axillary lymph nodes
• Brachial plexus

Underarm Resources
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