Short, fine, unpigmented downy hair that appears on the body, with the exception of the palms of the hands and the soles of the feet.
What is vullus hair
100
Process by which newly formed cells in the hair bulb mature, fill with keratin, move upward, lose their nucleus, and die.
What is keratinization
100
hair loss characterized by miniaturization of terminal hair that is converted to vellus hair; in men, it is known as male pattern baldness
What is androgenic alopecia
100
Dry hair and scalp can be caused by
What is inactive sebaceous gland
100
Ability of the hair to stretch and return to its original length without breaking.
What is hair elasticity
200
Also known as the resting phase; the final phase in the hair cycle that lasts until the fully grown hair is shed.
What is the telogen phase
200
strong chemical side bond that joins the sulfur atoms of two neighboring cysteine amino acids to create one cystine, which joins together two polypeptide strands like rungs on a ladder.
What is a disulfide bond
200
Medication put on the scalp twice a day to stimulate hair growth
What is Minoxidil
200
An oily substance secreted from the sebaceous glands
What is sebum
200
The number of individual hair stands on 1 square inch (2.5 square centimeters) of scalp.
What is hair density
300
Also known as the growth phase; phase during which new hair is produced.
What is the anagen phase
300
a weak, physical, cross-link side bond between adjacent polypeptide chains.
What is a salt bond
300
Recent measurements indicate that the average rate of hair loss per day is
What is 35-40 hairs a day
300
A well balanced diet, exercise, regular shampooing, and good personal hygiene
What is controlling oily hair and scalp
300
Thickness or diameter of the individual hair strand.
What is hair texture
400
Long, coarse, pigmented hair found on the scalp, legs, arms, and bodies of males and females.
What is terminal hair
400
Hair is approximately 90% protein. This protein is made up of...
What is a long chain of amino acids
400
An autoimmune disorder that causes affected hair follicles to be mistakenly attacked by a person's own immune system is:
What is alopecia areata
400
Characterized by a greasy buildup on the scalp and an oily coating on the hair
What is oily hair and scalp
400
Ability of the hair to absorb moisture.
What is hair porosity
500
the brief transition period between the growth and resting phases of a hair follicle. It signals the end of the growth phase.
What is the catagen phase
500
long, coiled complex polypeptides made of amino acids.
What is protein
500
temporary hair loss experienced at the conclusion of a pregnancy.
What is postpartum alopecia
500
People with dry hair and scalp should avoid
What is shampooing
500
This hair color averages 110,000 hairs on the head