zoo141 Chapter 5 Word Scramble
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Question | Answer |
what are the five functions of the skin | protection, vitamin d3 synthesis, excretion, sensation, temperature regulation |
the epidermis is | upper layer, composed of stratified squamous epithelial tissue |
stratum corneum | uppermost layer of the epidermis |
stratum lucidum | "clear" layer found only in thick skin |
stratum spinosum | appears spiny due to desmosomes |
stratum basale | bottom layer, contains basal cells |
dermis is composed of | papillary layer and reticular layer |
papillary layer | upper layer = areolar connective tissue |
reticular layer | lower layer = dense irregular connective tissue |
hypodermis | (subcutaneous tissue, or superficial fascia) = areolar and adipose connective tissue |
[epidermal cell] Keratinocytes | produce keratin |
[epidermal cell] melanocytes | produce melanin, packed in melanosomes |
[epidermal cell] dendritic cells | defend against microorganisms and superficial skin cancers |
[epidermal cell] Merkel cells [monitored by tactile discs): | touch sensation |
[DERMAL CELLS AND FIBERS] collagen fibers | very strong |
[DERMAL CELLS AND FIBERS] elastic fibers | permit stretching |
[DERMAL CELLS AND FIBERS] lamellated corpuscles | sense deep pressure and vibration |
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