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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 (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 The epidermis is the thinnest layer of skin, but it’s responsible for protecting you from the outside world, and it’s composed of five layers of its own
  • Epidermis - Wikipedia
    The epidermis is the outermost of the three major layers that constitute 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 [3] The epidermis is composed of multiple layers of flattened
  • 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
  • What Does the Epidermis Do? Key Functions Explained
    The epidermis is your skin’s outermost layer, and it serves as the body’s primary barrier against the outside world It blocks water loss, fights off pathogens, senses touch, produces vitamin D, and continuously rebuilds itself every 26 to 27 days Though it’s only about as thick as a sheet of paper on most of the body, it performs a remarkable number of jobs simultaneously How the
  • Layers of the Skin | Anatomy and Physiology I - Lumen Learning
    Figure 1 Layers of Skin 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 Beneath the dermis lies the hypodermis, which is composed mainly of loose connective and fatty tissues
  • 5. 1 Layers of the Skin – Anatomy Physiology 2e
    The epidermis is avascular and cells of this layer must get their oxygen and nutrients from capillaries in the dermis The dermis is made of two layers of connective tissue that compose an interconnected mesh of elastin and collagenous fibers, produced by fibroblasts (Figure 5 1 6)
  • Epidermis: Definition – MyPathologyReport
    The epidermis is the thin, outermost layer of your skin It acts as a protective shield between your body and the outside world Although it is only about as thick as a sheet of paper in most places, the epidermis plays a crucial role in preventing harmful germs, chemicals, and physical forces from damaging your body It also helps keep water inside your body, preventing dehydration What is
  • 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 In the bottom layer of the epidermis, skin cells divide and push older cells up to the surface where they die
  • Epidermis: anatomy, structure, cells and function. | Kenhub
    The epidermis is the most superficial layer of the skin Learn everything about the anatomy of the epidermis now on Kenhub!





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