Chapter 11-Hair And Scalp Flashcards
The scientific study of hair, it’s diseases and care is called?
Trichology
The two parts of a mature strand of hair are the?
Hair shaft and hair root
The tube like depression or pocket in the skin or scalp that contains the hair root is called?
Follicle
Where are hair follicles not found?
Soles of the feet
The tiny involuntary muscles in the base of the hair follicle are called?
Arrector pili
What is the oily substance secreted from the sebaceous glands called?
Sebum
For chemicals to penetrate a healthy cuticle hair layer what pH must they have?
An alkaline pH
What shape are the cells of the medulla?
Round
What is the name of the process whereby living cells mature and begin their journey up the hair shaft?
Keratinization
The five main elements that make up the chemical composition of human hair are carbon oxygen hydrogen and?
Nitrogen and sulfur
The chemical bonds that hold together the amino acid molecules are called?
Peptide bonds
Which type of melanin provides natural colors ranging from red and Ginger to yellow and blonde tones?
Pheomelanin
What type of hair do Asians tend to have?
Extremely straight hair
To help minimize tangles in extremely curly hair when washing you should use what?
A detangling Rinse
Hair texture is classified as?
Coarse medium or fine
The measurement of individual hair strands on one square inch of the scalp is called?
Hair density
Compared to hair with high porosity, chemical services performed on hair with low porosity require what kind of solutions?
More acidic
Wet hair with a normal elasticity will stretch up to you how much of it original length?
70%
Oily scalp and hair can be treated by properly washing it with?
Conditioning shampoo
Which type of hair almost never has a Medulla?
Vellus
The growth phase during which new hair is produced is called the?
Anagen phase
The average growth of healthy scalp hair is how much per month
1”
The technical term used to describe gray hair is what?
Canaties
A condition of abnormal hair growth on areas of the body is called?
Hypertrichosis
What is the medical term for dandruff?
Pityriasis.
The body can produce 11 of the 20…… That make up hair.
Amino acids
How much of the hairs overall strength do salt bond account for?
1/3
The anagen phase generally lasts from 3 to 5…
Years
Scalp hair grows__________on women than on men.
Faster.
Which hair growth phase signals the end of the growth phase?
Catagen
Does scalp massage affect hair growth?
No
True or false:
Compared to pigmented hair gray hair is neither coarser nor more resistant.
True!
What shape are cross sections of hair?
They could be almost any shape
What percentage of both men and women by age 35 show some degree of hair loss?
40%
Finasteride is an oral prescription medication for hair loss that is meant for whom
Men only
Congenital canaties manifests when?
At or before birth
Dandruff can easily be mistaken for what?
Dry scalp
Dandruff is believed to be caused by a?
Fungus
The most frequently encountered fungal infection resulting from hair services is?
Tinea Barbae
Tinea is characterized by:
Itching
The infestation of hair and scalp with head lice is called?
Pediculosis Capitis
A carbuncle is similar to a furnuncle but is different how?
Larger
True or false:
Fine hair is thicker and harder to process then course or medium hair.
False.
True or false:
Coarse hair is stronger than fine hair.
True
What is the outer most layer of the hair?
Hair cuticle
The oil glands of the skin that are connected to the hair follicles are the what glands?
Sebaceous
What is the bond that is a physical bond easily broken by water or heat?
Hydrogen
What is the approximate percentage of protein that makes up Hair?
90%
Total scalp hair loss is known as what?
Alopecia totalis
Hypertrichosis is also known as?
Hirsuties
The naturally occurring fungus that causes the symptoms of dandruff when it goes out of control it’s called what?
Malasezzia
What is the name of the lowest part of a hair strand?
Hair bulb.
What is the technical term for beaded hair?
Monilethrix
What is the name of the highly contagious skin disease caused by a parasite called it might that burrows under the skin?
Scabies
The term for the spiral shape of a coiled protein is?
Helix
What effect on hair growth does shaving clipping and cutting the hair of the head have?
It has no effect on her growth.
Dry, sulfer-yellow, cup like crusts on the scalp are called?
Wheals
The______, ________ and _________are part of the integumentary system.
Hair, glands and nails.
What is the technical term for knotted hair?
Hypertrichosis
What is the name of the inner most layer of the hair?
The medulla
I Hair that forms in a circular pattern on the crown of the head is called?
Whorl
A part of the hair located below the surface of the epidermis is the?
Hair root
A tuft of hair that stands straight up is called a?
Cowlick
The ability of the hair to absorb moisture is called?
Hair porosity.
The middle layer of the hair is called the?
The cortex
An auto immune disorder that causes affected hair follicles to be mistakenly attacked by a person’s own immune system is called what?
Androgenic alopecia
Vellus hair is also known as what?
Lanugo hair
The medical term for ringworm is what?
Tinea
