Hair Structure
Where is everything in the hair located?
The Cortex
What is the meaning of hair porosity?
Hairs ability to absorb moisture.
Where is Melanin located, and what is it?
Located in the cortex, and it is the hairs natural pigment
What is alopecia?
Hair Loss
Partial or complete hair loss from where it typically grows?
Alopecia
True or False, does all hair have a medulla?
False, Fine hair does not have a medulla
What is density?
The number of each individual hair strand.
What are Hydrogen bonds broken by?
Water or Heat
What is Scabies?
Condition caused by mites, highly contagious
Also known as the growth phase, hair phase during which new hair is produced
Anagen Phase
What is the study of hair?
Trichology
List the three phases of the hair growth cycle in order.
Anagen, Catagen, and Telogen
What are polypeptide chains?
A long chain of amino acids linked by peptide bonds
What is the technical term for dandruff?
Pityriasis
Consists of brown and black pigment and is the predominant pigment in black and brunette hair
Eumelanin
What does the arrector pili muscle cause??
causes goosebumps
What causes a whorl?
Occurs when hair leaves the follicles at an angle.
What are the COHNS elements?
Carbon, Oxygen, Hydrogen, Nitrogen, Sulfur
What's the number one hair loss treatment?
Minoxidil
amino acid with a sulfur (S) atom that joins together two peptide strands
Cysteine
What substance does sebaceous glands produce??
They produce a substance called Sebum
What is vellus hair?
Peach fuzz
What is the hair mostly made of?
Protein
Malassezia causes what?
Dandruff
cone shaped elevation found at the base of the bulbs
Dermal papilla