Arrector Pili
Science / Biology / Arrector Pili
Related Words
Arrector Pili: A muscle running from a hair follicle to the dermis. Contraction of the muscle causes the hair to rise perpendicular to the skin surface, forming goose pimples.
Epilithic: A term for organisms that live attached to rocks. Latin translation: epi = upon, lith = rock. This term is general to terrestrial and marine habitats, ie. Some lichens are epilithic.
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