armpit
Sign in to saveThe axilla (: axillae or axillas; also known as the armpit, underarm or oxter) is the area on the human body directly under the shoulder joint. It includes the axillary space, an anatomical space within the shoulder girdle between the arm and the thoracic cage, bounded superiorly by the imaginary plane between the superior borders of the first rib, clavicle and scapula (above which are considered part of the neck), medially by the serratus anterior muscle and thoracolumbar fascia, anteriorly by the pectoral muscles and posteriorly by the subscapularis, teres major and latissimus dorsi muscle.
AI overview
The armpit (axilla) is the area located directly under the shoulder joint, bounded by various muscles and anatomical structures including the pectoral muscles in front and the shoulder blade muscles in back. It contains an anatomical space between the arm and the chest cage that is important for the structural organization of the shoulder region.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- Anatomy.Name
- Axilla
- Anatomy.Latin
- axilla
- Anatomy.Image2
- ArmpitHair2.jpg
- Anatomy.Caption2
- Human axilla
- Anatomy.Artery
- Axillary artery
- Anatomy.Vein
- Axillary vein
- Anatomy.Nerve
- Axillary nerve, medial cord, posterior cord, lateral cord
- Anatomy.Lymph
- Axillary lymph nodes
via Wikipedia infobox
Article
12 sectionsContents
- Structure
- Boundaries
- Contents
- Society and culture
- Tickling
- Underarm hair
- Clinical significance
- Lymphogenic spread of breast cancer
- Axillary intertrigo
- See also
- Notes
- External links
The axilla (: axillae or axillas; also known as the armpit, underarm or oxter) is the area on the human body directly under the shoulder joint. It includes the axillary space, an anatomical space within the shoulder girdle between the arm and the thoracic cage, bounded superiorly by the imaginary plane between the superior borders of the first rib, clavicle and scapula (above which are considered part of the neck), medially by the serratus anterior muscle and thoracolumbar fascia, anteriorly by the pectoral muscles and posteriorly by the subscapularis, teres major and latissimus dorsi muscle.
The soft skin covering the lateral axilla contains many hair and sweat glands. In humans, the formation of body odor happens mostly in the axilla. These odorant substances have been suggested by some to serve as pheromones, which play a role related to mate selection, although this is a controversial topic within the scientific community. The underarms seem more important than the pubic area for emitting body odor, which may be related to human bipedalism.