Groups of cells that are similar in structure and perform a common or related function form a(n) _____. Keratin accumulates in this layer by a process that forms a thicker layer of skin cells to protect less dense cells underneath. A. Stratum spinosum B. Stratum granulosum C. Stratum corneum D. Stratum basale. Finally the cells flatten, lose … D: The deepest stratum, stratum basale, consists of cuboidal or columnal cells that undergo mitotic division every 19 days. Answer: D. Stratum basale. These new cells push already-existing cells from the stratum spinosum and granulosum, and finally their terminal differentiation results in the formation of the SC (Hillery et al., 2002). The stratum granulosum functions as the waterproofing layer of the skin that prevents fluid loss, according to the Loyola University Medical Education Network. Other articles where Stratum spinosum is discussed: integument: Skin structure: …the prickle cell layer (stratum spinosum), in which they are knit together by plaquelike structures called desmosomes. Striae in the skin are caused by _____. A stratum spinosum is also seen in the keratinised epithelium of … The keratinocyte cells in the stratum spinosum layer also contain oval-shaped nuclei. Prickle cell layer is the fourth tier from the exterior and is situated between stratum granulosum and germinativum (basale). stratum basa´le the deepest layer of the epidermis , composed of a single layer of basophilic cells. tissue: Term _____ is the tissue that regulates and controls body functions. These spine-like structures account for the "spinosum" portion of the skin layer's name and are believed to serve as the underlying structural reinforcements that provide strength, elasticity and flexibility to the outer layer of skin. Called also basal layer of epidermis . ... Epidermis dermis stratum granulosum stratum spinosum stratum basale stratum corneum. The stratum spinosum is a characteristic of human skin but is not seen in the thin skin of the rat, although it is present in the thick skin of the paw pads. Which of the following conditions would NOT be seen from overexposure to UV light? Terms in this set 83 describe the structure and function of the different types of exocrine glands found in the skin. The secretion of cytokeratin (a precursor to keratin) takes place in the stratum spinosum, which helps strengthen cell-to-cell adhesion in this layer. Home › Know your skin › Epidermis › Functions of stratum spinosum (Prickle cell layer) Stratum spinosum or prickle cell layer of the epidermis has the vital function of Keratinization. Robert Lewis Maynard, Noel Downes, in Anatomy and Histology of the Laboratory Rat in Toxicology and Biomedical Research, 2019. organ organism organ system tissue: Definition. Medical definition of stratum spinosum: the layers of prickle cells over the layer of the stratum basale capable of undergoing mitosis —called also prickle cell layer. stratum spinosum: [ stra´tum, strat´um ] ( L. ) a sheetlike mass of tissue; see also lamina and layer . Show transcribed image text label the photomicrograph of thin skin. 3. 2.1.1 Stratum corneum structure and barrier function. Quizlet flashcards activities and games help you improve your grades. Next they move through a granular layer (stratum granulosum), in which they become laden with keratohyalin, a granular component of keratin. The SC is considered a “brick wall” made up of protein and lipids. Stratum Granulosum. Keratinocytes in the stratum spinosum are known as _____. Which of the following cells function as sensory receptors for touch? A: Stratum spinosum is the layer where Langerhans cells are found along with many rows of spiny keratinocytes. 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