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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
  • Why Your Epidermis Is More Than Just Skin-Deep - Verywell Health
    The epidermis is the top layer of skin that protects against toxins and infection There are four main layers in the epidermis, and a fifth layer is found in thick skin on palms and soles
  • Epidermis | Skin Layers, Keratinocytes Melanocytes | Britannica
    Epidermis, in zoology, protective outermost portion of the skin There are two layers of epidermis, the living basal layer, which is next to the dermis, and the external stratum corneum, or horny layer, which is composed of dead, keratin-filled cells that have migrated outward from the basal layer
  • Layers of the Skin – Diagram, Structure, Function
    The epidermis is the thin, outermost layer of the skin, providing a protective barrier against environmental hazards Composed primarily of keratinized stratified squamous epithelium Contains no blood vessels; nutrients diffuse from the underlying dermis
  • 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
  • Functions of the Skin - Epidermis - Dermis - TeachMeAnatomy
    The skin is comprised of three main layers; epidermis, dermis and hypodermis The epidermis is the most superficial layer of the skin, and is largely formed by layers of keratinocytes undergoing terminal maturation This involves increased keratin production and migration toward the external surface, a process termed cornification
  • 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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