The axilla (also, underarm , underarms or oxter ) is the area of ​​the human body directly under the joint where the arm connected to the shoulder. It also provides sweat glands under the arm.
In humans, the formation of body odor occurs mostly in the axillary region. This smelly substance serves as a pheromone that plays a role related to marriage. The armpit area appears more important than the genital area for body odor that may be related to human bipedalism.
Video Axilla
Struktur
Boundary
Anatomically, the boundaries of axilla are:
The posterior lower bound is called posterior axis folds and this is a compound structure comprising laticimus dorsi and terraces of the main muscles. May fall after weight loss.
The anterior boundary is called the anterior axial folds and it is round in shape and formed by the lower limit of the major pectoralis. Some sources also include minor pectorals. Can be extended after weight loss.
Axillary content includes axillary veins and arteries, as well as brachial plexus, lymph nodes, and fat. Axilla is the space between the thorax and the upper arm.
Contents
- Axillary and branch arteries
- axillary veins and its tributaries
- The infraklavikula portion of the brachial plexus
- Long chest and interostobracial nerves
- Five groups of axillary lymph nodes and associated lymphatics
- Fatty tissue and axillary areolar where other content is embedded
Maps Axilla
Society and culture
The term "armpit" usually refers to the axillary outer surface. However, this term is sometimes used interchangeably in a casual context. Everyday language, armpit refers to a hole under the junction of the arm and shoulder.
The term oxter is used in Scottish and in Irish, not "axilla".
Tickle
Underarms can be an amusing area, probably because of the amount of nerve they contain. Some people find this area very unpleasant when tickled.
Underarm hair
Armpit hair usually grows in the armpits of both women and men, beginning in adolescence.
In some modern Western cultures, it is common for women to remove underarm hair. Some people regard this practice as an aesthetic problem, while others see its removal for health-related issues. When armpit hair grows rapidly, shaving should be frequent, or stumps will appear in the axilla. In the Islamic tradition, armpit hair removal is a practice of religious hygiene for women and men. While most Muslims shave it, some pick it, with products like candles, as it is more efficient to maintain a longer period without growing back.
In feminist movements, hippie culture, and in punk rock scenes, some women retain their armpit hair for various reasons, from subversion to egalitarianism to comfort. Conversely but not commonly, some men choose to remove their armpit hair for aesthetic reasons or to reduce friction in sports such as swimming.
Clinical interests
Lymphogenic spread of breast cancer
Breast cancer usually spreads through the lymphatic vessels to the lymph nodes found in the axilla.
Intertrigo axil
Excessive sweating can cause axillary intertrigo. Intertrigo is an inflamed skin condition caused by heat, friction, and moisture. A warm and wet armpit can accommodate the growth of bacteria, yeast, and pathogenic fungi. This condition is responsible for symptoms such as rashes, pustules, or chronic itching or burning in the armpits. Intersrigo axilla often occurs in those who work in hot environments.
See also
- Deodorant
- Perspiracy
- Popliteal fossa or "knee hole"
- Axillary suspensory ligament
Note
External links
- Step by Step Video Dissection from Human Axilla shows all relevant anatomy
- Overview 3D axillary anatomy (multimedia)
- lesson3axilla at The Anatomy Lesson by Wesley Norman (Georgetown University)
- lesson3axillarywalls at The Anatomy Lesson by Wesley Norman (Georgetown University)
Source of the article : Wikipedia
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