Hair is made of a tough protein called keratin. A hair follicle anchors each hair into the skin. The hair bulb forms the base of the hair follicle. In the hair bulb, living cells divide and grow to build the hair shaft. Blood vessels nourish the cells in the hair bulb, and deliver hormones that modify hair growth and structure at different times of life.
Phylum definition, Biology. the primary subdivision of a taxonomic kingdom, grouping together all classes of organisms that have the same body plan. See more. Dictionary.com
Ayla is an uncommon given name for females but a somewhat popular surname for all people (#124872 out of 150436, Top 83%). (2000 U.S. Census). Charted below is the baby name popularity of Ayla for girls.Ayla entered the list in 1990 and reached its apex position of #250 in the U.S. in 2012, and is at #277 currently.yla /ay-la/ [2 sylls.] as a girls' name is pronounced AY-lah. It is of Hebrew origin, and the meaning of Ayla is deer or gazelle.