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The epidermis is the outermost of the three layers that comprise the skin, the inner layers being the dermis and hypodermis. [1] The epidermal layer provides a barrier to infection from environmental pathogens [2] and regulates the amount of water released from the body into the atmosphere through transepidermal water loss.
The human skin is the outer covering of the body and is the largest organ of the integumentary system. The skin has up to seven layers of ectodermal tissue guarding muscles, bones, ligaments and internal organs. Human skin is similar to most of the other mammals' skin, and it is very similar to pig skin.
Histologic image showing a section of epidermis. Stratum basale labeled near bottom.. The stratum basale (basal layer, sometimes referred to as stratum germinativum) is the deepest layer of the five layers of the epidermis, the external covering of skin in mammals.
The human body consists of biological systems, that consist of organs, that consist of tissues, that consist of cells and connective tissue. The history of anatomy has been characterized, over a long period of time, by a continually developing understanding of the functions of organs and structures in the body.
These results clearly indicate that GF mice have an impaired capacity of response in front of infections compared to SPF mice. Finally, mono-association of GF mice with S. epidermidis clearly restored immunity function which in the case of skin is mediated by IL-1 which is key for the restoration of IL-17A and IFN-γ levels. Thus skin ...
In humans, for example, the skin located under the eyes and around the eyelids is the thinnest skin on the body at 0.5 mm thick and is one of the first areas to show signs of aging such as "crows feet" and wrinkles. The skin on the palms and the soles of the feet is the thickest skin on the body at 4 mm thick.
Staphylococcus epidermidis, a common bacterium found as a normal commensal on human skin, is a significant cause of hospital-acquired infections that are associated with the use of implanted medical devices like heart valves and catheters. [48]
Forms of secretion in glandular tissue Different characteristics of glands of the body. Epithelial tissues have as their primary functions: to protect the tissues that lie beneath from radiation, desiccation, toxins, invasion by pathogens, and physical trauma; the regulation and exchange of chemicals between the underlying tissues and a body cavity