Similar words: corrector, current directory, correction factor, rector, nuclear reactor, rectory, erector, director.
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1. When it's cold, the arrector muscle pulls the hair up. The duct to the sweat glands gets small to conserve heat.
2. When our ancestors were covered in fur, muscles in their skin called "arrector pili" contracted when they were upset or cold, making their fur stand on end.
3. The portion of the follicle between the sebaceous duct and the insertion of the arrector pili muscle is the isthmus.
4. Along one side of the follicle, two buds are formed: an upper, which develops into the sebaceous gland, and a lower, which becomes the attachment for the arrector pili muscle.
5. Arrector Pil: Each hair follicle has a tiny muscle called the arrector pili attached to it.
More similar words: corrector, current directory, correction factor, rector, nuclear reactor, rectory, erector, director, directory, ex-directory, directorate, directorial, subdirectory, art director, film director, directorship, corner reflector, director board, root directory, budget director, directory name, directory tree, music director, home directory, collector current, theater director, target directory, outside director, source directory, theatre director.