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Across 6. Superficial part of a hair above the skin 9. Technical term for a sweat gland 11. Grey hair is caused by a decrease in _________ production with age 12. Layer of the epidermis at the base of the nail body 15. Enlarged base of the hair follicle 16. Muscle which pulls hair upright 17. Technical term for oil glands 18. Portion of the nail which is attached to skin 19. Germ layer at the base of the nail root 21. Area at base of the hair bulb with blood vessels to nourish the hair 22. Blond hair is produced by melanin variants with more _____ 23. Sheath that surrounds the hair root 24. Specialized apocrine gland which produces ear wax

Down 1. Portion of the hair embedded in the skin 2. Glands located over most of the body and produce perspiration for cooling 3. Whitish semicircle at the base of the nail body 4. The result of over-productive sebaceous glands leading to blackheads and inflammation of the skin 5. Germ layer which produces new hair cells 7. Nerve ending which wraps around each hair and is used to sense touch 8. Tip of the nail, which is free from underlying skin 10. Oily mixture of fats, cholesterol, proteins, pheromones, and inorganic salts 13. Glands located primarily during the armpit and pubic regions stimulated during emotional stress and sexual excitement 14. Watery secretion used to maintain body temperature and eliminate wastes 18. Portion of the nail embedded in the digit 20. Red hair is produced by melanin variants with more ____