arrector |
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navigate by keyword : arrector biological biology cell cytological cytology dermis epithelial epithelium fat gland hematoxylineosin histological histology holocrine human hypodermis lipid micrograph microscope microscopic microscopy muscle nucleus paraffin photomicrograph pili pyknotic sebaceous sebum section skin smooth tissue |
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The arrector pili muscles are small bundles of smooth muscle fibres attached to hair follicles, which causes the raising of hairs known as goose bumps |
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