Hair Root
The chief component of hair is a ____ called keratin.
What is protein?
The portion of the hair that is enclosed within the follicle beneath the skin surface is the ____.
What is the Hair Root?
The three types of ____ bonds are hydrogen, salt, and disulfide bonds .
What are side bonds?
During which phase is new hair produced?
What is the anagen phase?
Alopecia is the technical term for ____.
what is abnormal hair loss?
The portion of the hair that extends above the skin surface is the ____.
What is the Hair Shaft?
The hair bulb forms the ____.
what is the lower part of the hair root?
Within the ____, polypeptide chains are cross-linked by side bonds.
What is the hair cortex?
A tuft of hair standing straight up is known as a ____.
what is a cowlick?
Androgenic alopecia in men is also called ____.
What is male pattern baldness?
The dermal papilla is surrounded by the ____.
What is the Hair Follicle?
The hair shaft consists of ____ main layers.
What is the 3?
Disulfide bonds are the ____ side bonds in the cortex.
What are the strongest?
At any given time, about ____ percent of scalp hair is in the anagen phase.
WHat is 90 percent?
Alopecia ____ is characterized by the sudden falling out of hair in round patches.
what is areata?
The dermal papilla contains the blood and nerve supply that provides ____ needed for hair growth.
what are the nutrients?
The ____ consists of a single overlapping layer of transparent, scale-like cells that look like shingles on a roof.
What is the cuticle?
Natural hair color is the result of the ____ pigment found within the cortex.
What is Melanin?
The average growth rate of healthy hair on the scalp is about ____.
what is 1/2 inch per month?
____ is hair loss that occurs as a result of genetics, age, and hormonal changes that cause the miniaturization of terminal hair, converting it to vellus hair.
what is Androgenic alopecia?
The ____ glands secrete sebum.
what are sebaceous glands?
Hair ____ mature through a process called keratinization.
Red and ginger to yellow and light blond hair colors are provided by ____.
what is pheomelanin?
During the ____ phase, the hair bulb disappears.
What is the catagen phase ?
Dandruff is technically known as ____.
what is pityriasis?