Image Figure 14.7 b illustrates squamous epithelial cells arranged in stratified layers, where protection is needed on the body from outside abrasion and damage. (credit b: modification of work by Ed Uthman scale-bar data from Matt Russell)įigure 14.7 a illustrates a layer of squamous cells with their membranes joined together to form an epithelium. These cells can be stratified into layers, as in (b) this human cervix specimen. Figure 14.7 Squamous epithelia cells (a) have a slightly irregular shape, and a small, centrally located nucleus. When the cells are arranged in a single layer (simple epithelia), they facilitate diffusion in tissues, such as the areas of gas exchange in the lungs and the exchange of nutrients and waste at blood capillaries. The cell outline is slightly irregular, and cells fit together to form a covering or lining. Squamous epithelial cells are generally round, flat, and have a small, centrally located nucleus.
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