10 FAQs About the Hypodermis

By mame
Reviewed: dr. vanta
Article Sources Article Sources
  • 1. Yousef, Hani. 'Anatomy, Skin (Integument), Epidermis.' U.S. National Library of Medicine, 27 July 2020, www.ncbi.nlm.nih.gov/books/NBK470464
  • 2. Saldana, José Ignacio. 'Macrophages.' British Society for Immunology, www.immunology.org/public-information/bitesized-immunology/cells/macrophages
  • 3. Biga, Lindsay M., et al. '5.3 Functions of the Integumentary System.' Anatomy Physiology, OpenStax/Oregon State University, open.oregonstate.education/aandp/chapter/5-3-functions-of-the-integumentary-system
  • 4. 'Administering Drugs via a Subcutaneous Injection.' Nursing Times, 7 Apr. 2021, www.nursingtimes.net/clinical-archive/assessment-skills/injection-technique-2-administering-drugs-via-the-subcutaneous-route-28-08-2018
Medical Expert Medical Expert

As the largest human organ, skin wraps the entire outer body and performs many essential functions. It protects the body from UV rays, pathogens and other external threats, and it retains moisture and houses blood vessels and nerves. The three layers of the skin are the epidermis, dermis and hypodermis.

The hypodermis, also known as the subcutaneous layer, is the deepest layer of skin and lies directly below the dermis layer. The hypodermis layer is home to fat cells and some skin appendages, such as sensory neurons and hair follicles.1Yousef, Hani. ‘Anatomy, Skin (Integument), Epidermis.’ U.S. National Library of Medicine, 27 July 2020, www.ncbi.nlm.nih.gov/books/NBK470464

Consists Mostly of Fat

The hypodermis has limited blood vessels, functions as a fat storage area and is primarily composed of adipose, or fat, tissue. This tissue contains groups of fat-storing cells, known as adipocytes or adipose lobules. This stored fat serves several functions, including energy conservation, heat loss insulation and cushioning to protect the outer body and internal organs from impact and other traumas.

Where this type of fat accumulates and is stored in the body depends on various genetic factors and hormones. The hypodermis houses the type of fat that dieters and people who are trying to lose or control their weight generally target.


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