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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: anatomy, structure, cells and function. - Kenhub
    The epidermis is the most superficial layer of the skin The other two layers beneath the epidermis are the dermis and hypodermis The epidermis is also comprised of several layers including the stratum basale, stratum spisosum, stratum granulosum, stratum lucidum, and stratum corneum
  • Epidermis Function: How Skin Protects You and How You Can . . . - Healthline
    The epidermis is the outer layer of your skin, and it plays an important role in protecting your body from things like infection, UV radiation, and losing important nutrients and water
  • Epidermis (Outer Layer of Skin): Layers, Function, Structure
    What is the epidermis layer of skin? Your skin has three main layers, and the epidermis (ep-uh-derm-us) is the outermost layer in your body The other two layers of skin are the dermis and hypodermis
  • 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
  • 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 protect the body This part of the skin does not contain any blood vessels
  • Epidermis - Definition and Examples - Biology Online Dictionary
    Epidermis (biology definition): the outermost portion of the skin or integument Etymology: from epi, meaning “on top of” + derma, meaning “skin” In humans, the skin is the largest organ of the integumentary system It surrounds the outside surface of the body
  • The 5 Cell Types of the Epidermis and Their Descriptions
    Dispersed throughout the epidermis, primarily within the stratum spinosum, are Langerhans cells These cells are a type of dendritic cell that originates from the bone marrow and forms a network that acts as an immune sentinel for the skin Their location makes them one of the first lines of defense against invading pathogens





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