Show transcribed image text label the photomicrograph of thin skin. Prickle cell layer is the fourth tier from the exterior and is situated between stratum granulosum and germinativum (basale). The keratinocyte cells in the stratum spinosum layer also contain oval-shaped nuclei. Quizlet flashcards activities and games help you improve your grades. 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). Striae in the skin are caused by _____. 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. 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 cells function as sensory receptors for touch? Groups of cells that are similar in structure and perform a common or related function form a(n) _____. A: Stratum spinosum is the layer where Langerhans cells are found along with many rows of spiny keratinocytes. Next they move through a granular layer (stratum granulosum), in which they become laden with keratohyalin, a granular component of keratin. 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. Robert Lewis Maynard, Noel Downes, in Anatomy and Histology of the Laboratory Rat in Toxicology and Biomedical Research, 2019. stratum spinosum: [ stra´tum, strat´um ] ( L. ) a sheetlike mass of tissue; see also lamina and layer . Stratum Granulosum. Finally the cells flatten, lose … Called also basal layer of epidermis . The secretion of cytokeratin (a precursor to keratin) takes place in the stratum spinosum, which helps strengthen cell-to-cell adhesion in this layer. Terms in this set 83 describe the structure and function of the different types of exocrine glands found in the skin. The stratum granulosum functions as the waterproofing layer of the skin that prevents fluid loss, according to the Loyola University Medical Education Network. The SC is considered a “brick wall” made up of protein and lipids. A. Stratum spinosum B. Stratum granulosum C. Stratum corneum D. Stratum basale. A stratum spinosum is also seen in the keratinised epithelium of … 3. The stratum spinosum is also called the "prickly layer" because of the spiky microfilament projections that are found in this sub-layer. All of the following statements are true about our fingerprints, EXCEPT that _____. 2.1.1 Stratum corneum structure and barrier function. D: The deepest stratum, stratum basale, consists of cuboidal or columnal cells that undergo mitotic division every 19 days. stratum basa´le the deepest layer of the epidermis , composed of a single layer of basophilic cells. Which of the following conditions would NOT be seen from overexposure to UV light? Stratum Spinosum. 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. Answer: D. Stratum basale. ... Epidermis dermis stratum granulosum stratum spinosum stratum basale stratum corneum. organ organism organ system tissue: Definition. Keratinocytes in the stratum spinosum are known as _____. tissue: Term _____ is the tissue that regulates and controls body functions. 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