Subcutis is the innermost layer containing loose connective tissues, fatty tissues and elastin, which acts as an intermediate link between the skin and bones. Content: Human Skin Layers. The dermis is present beneath the epidermis layer that comprises a pilosebaceous unit, fibroblasts, collagen, mast cells and capillaries. It is mostly made up of flat, scale-like cells called squamous cells. In vertebrates , epidermis is the outermost layer of the skin . The epidermis is an outer protective cell layer that provides protection against infection, mechanical injury and water loss in plants. The epidermis is made of four main layers, or strata: The stratum corneum is the thick, tough outer layer. Under the squamous cells are round cells called basal cells. The epidermis is mostly made up of flat, scale-like cells called squamous cells. Although they serve a number of important functions, their primary role is to protect from a variety of harmful factors (environmental stressors) including microbes, chemical compounds as well as … Definition - What does Epidermis mean? It is the outermost, protoderm-derived layer of cells that covers seeds, fruits, flowers, leaves, roots, and stem parts. 1983. Its main purpose is protection. the outermost and nonvascular layer of the skin, derived from the embryonic ectoderm, varying in thickness from 0.07 to 1.4 mm. home >> biology >> definition In plants , the outermost layer of cells covering the leaves and young parts of a plant is the epidermis . The epidermis is the outermost layer of our skin. General Biology, 11th Edition.St. epidermis [ep″ĭ-der´mis] (pl. This consists mainly of cells called keratinocytes, made from the tough protein keratin (also the material in hair and nails). The outermost is the epidermis. C. V. Mosby . Under the squamous cells are round cells called basal cells. In invertebrates, the outermost layer of cells of the organism.. epidermis outer layer of skin cells Source: Noland, George B. Learn with flashcards, games, and more — for free. In vertebrates, epidermis is the outermost layer of the skin. Epidermis definition, the outer, nonvascular, nonsensitive layer of the skin, covering the true skin or corium. Medical Author: William C. Shiel Jr., MD, FACP, FACR; Epidermis: The upper or outer layer of the two main layers of cells that make up the skin. Medical Definition of Epidermis. Louis, MO. Epidermal cells include several types of cells that make up the epidermis of plants. Definition of Skin Skin is made up of three layers. epidermis definitions - from layers, to function, and structures. epider´mides) (Gr.) Epidermis. Definition: The epidermis is the outer layer of the three layers that make up the skin, the inner layers being the dermis and hypodermis. 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