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epidermis    音标拼音: [,ɛpəd'ɚməs]
n. 表皮,上皮

表皮,上皮

epidermis
n 1: the outer layer of the skin covering the exterior body
surface of vertebrates [synonym: {epidermis}, {cuticle}]

Periostracum \Per`i*os"tra*cum\, n.; pl. {Periostraca}. [NL.,
fr. Gr. peri` around ? shell of a testacean.] (Zool.)
A chitinous membrane covering the exterior of many shells; --
called also {epidermis}.
[1913 Webster]


Epidermis \Ep`i*der"mis\, n. [L., fr. Gr. ?; ? over ? skin,
fr. ? to skin. See {Tear}, v. t.]
1. (Anat.) The outer, nonsensitive layer of the skin;
cuticle; scarfskin. See {Dermis}.
[1913 Webster]

2. (Bot.) The outermost layer of the cells, which covers both
surfaces of leaves, and also the surface of stems, when
they are first formed. As stems grow old this layer is
lost, and never replaced.
[1913 Webster]


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  • Epidermis - Wikipedia
    The epidermis serves as a barrier to protect the body against microbial pathogens, oxidative stress (UV light), and chemical compounds, and provides mechanical resistance to minor injury
  • Layers of the Skin | Anatomy and Physiology I - Lumen Learning
    The skin is composed of two main layers: the epidermis, made of closely packed epithelial cells, and the dermis, made of dense, irregular connective tissue that houses blood vessels, hair follicles, sweat glands, and other structures
  • The Anatomy and Function of the Epidermis - Verywell Health
    The epidermis, the outermost layer of the skin, provides a protective barrier against UV radiation, chemicals, and microorganisms, including bacteria, viruses, and fungi
  • Anatomy of the Skin - UTMB Health
    The epidermis is the most superficial layer of the skin and provides the first barrier of protection from the invasion of substances into the body The principal cells of the epidermis are keratinocytes
  • Human skin - Epidermis, Melanin, Keratinocytes | Britannica
    The epidermis is thickest on friction surfaces and thinnest over the eyelids, on the lower parts of the abdomen, and around the external genitalia Unlike that of most other mammals, it has an intricately sculptured underside and does not lie flat upon the dermis
  • What is the Epidermis? - News-Medical. net
    The epidermis is the thin, outer layer of the skin that is visible to the eye and works to provide protection to the body
  • Epidermis - Structure, Function Location
    The epidermis is the outermost layer of the skin, serving as the primary barrier between the external environment and the internal body As part of the integumentary system, it plays a vital role in protection, hydration, sensation, and immune defense





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