Inside the bulb lies the hair matrix which serves as the active site of hair growth and gives hair its color. Definition of hair bulb.
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They function rather like adjectives and are found as postmodifiers in a noun phrase.
Hair bulb definition anatomy. Some newly formed cells become part of the more superficial layers. Hair bulb the bulbous expansion at the proximal end of a hair in which the hair shaft is generated. Picture of the hair.
The bulb is the stocking like structure that surrounds the papilla and germinal matrix. In the hair bulb living cells divide and grow to build the hair shaft. Its fed by capillaries.
Cells are actively mitotic stem cells. It also contains hormones that affect hair growth and structure during different stages of life like puberty. The hair follicle is epidermal tissue that dips down into the dermis and is associated with other structures like apocrine glands sebaceous glands the arrector pili muscle and nerve receptors.
Some newly formed cells become part of the more superficial layers. The lower expanded extremity of a hair that fits like a cap over the hair papilla at the bottom of the hair follicle. Hair is made of a tough protein called keratin.
It is the deepest epidermal layer. Has one row of actively mitotic stem cells. Hair is simple in structure but has important functions in social functioning.
The bulbous expansion at the base of a hair from which the hair shaft develops. Medical definition of hair bulb. The noun that is modified is called the antecedent.
The bulb is home to several types of stem cells that divide every 23 to 72 hours faster than any other cells in the body. Relative clauses tell us more about nouns. The hair bulb forms the base of the hair follicle.
You will see occasional melanocytes and dendritic cells. A hair follicle anchors each hair into the skin.
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