Bodytomy takes a closer look at these layers along with their functions. In Ficus upper epidermal layer contains cystoliths made up of calcium carbonate crystals. 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. Various modified epidermal cells regulate The Epidermis is the skins outer layer of the skin. Common types of benign (non-cancerous) skin growths. The stratum basale is the deepest layer, while the stratum corneum is the outermost layer of epidermis. The epidermis (the uppermost layer of skin) is an important system that creates our skin tone, while the dermis (the middle layer) contains connective tissue, hair follicles, and sweat glands that help regulate the integrity and temperature of our the skin. Depending on the location, the epidermis may be thicker or thinner. It is the part we can see with the naked eye. B2 - Describe and explain the function of the epidermis. Stratum Basale. The thinnest the epidermis gets is the eyelid, while the thickest it gets is the palms and soles. Multilayered or Multiseriate Epidermis. The Epidermis acts as a “protector” for our internal structures. The epidermis is the outer cellular layer of the skin. The thickness of epidermis varies with the location; for example, the epidermis of the eyelid measures around 30–40 μm, compared with 140 μm for the buttocks, or more than 600 μm for the palms or soles [16]. When the epidermis is healthy, it protects the body from bacteria, viruses, infection and other unwanted substances [source: The Merck Manuals].Protection starts with the natural layer of oil that appears on the outermost surface of the skin, providing the first barrier of protection. The stratum basale (also called the stratum germinativum) is the deepest epidermal layer and attaches the epidermis to the basal lamina, below which lie the layers of the dermis. Generally, epidermis is single layered, but in certain leaves, multilayered upper epidermis is present, Example: Ficus, Nerium, and Peperomea. The deeper hypodermis is made up of fat and even more connective tissue. Keratinocytes are the most important contingent of epidermal cells. In Nerium, in the multilayered epidermis the outer layer alone is cutinized. It is not uncommon for a variety of different marks, such as moles and freckles, to develop as a result of sun exposure too. The main difference between epidermis and epithelium is that epidermis is the outermost protective layer of the skin of animals whereas epithelium is one of the four types of tissues in the animal body, which lines the internal and external surfaces of the body. Epidermis, in botany, outermost, protoderm-derived layer of cells covering the stem, root, leaf, flower, fruit, and seed parts of a plant. Skin changes with age are common for most people. The epidermis, which is the topmost layer, actually has 5 sub-layers. Beneath the dermis lies the hypodermis, which is composed mainly of loose connective and fatty tissues. The cells in the stratum basale bond to the dermis via intertwining collagen fibers, referred to as the basement membrane. The epidermis and its waxy cuticle provide a protective barrier against mechanical injury, water loss, and infection. The basement membrane is a thin, non-cellular layer between the epidermis and dermis and is composed of various protein structures linking the basal layer of keratinocytes to the basement membrane (hemidesmosomes), and the basement membrane to the underlying dermis (anchoring fibrils). With age are common for most people their functions calcium carbonate crystals and its cuticle... 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