What are the layers of the skin? - ANSWER epidermis, dermis, hypodermis
What are the 2 classifications of hair? - ANSWER Vellus and terminal hair
Pulse duration and fluence for fitz 1,2,3 - ANSWER -Use higher fluences
-Shorter pulse duration
Pulse duration and fluence for fitz 4,5 - ANSWE...
, -Nd: YAG 1064 nm (neodymium: yttrium-aluminum-garnet) (invisible light, all skin types, not the best but
safest for skin types 4 and 5)
What are the phases of hair growth - ANSWER anagen, catagen, telogen
Anagen - ANSWER -Active hair growth is occurring
-in early anagen, the follicle is growing and starting to deepen
-Hair is beginning to grow but has not yet reached the surface of the skin
-The mid-late anagen follicle has reached its maximum depth. The hair is fully visible terminal hair on the
surface of the skin.
-The hair shaft bulb is dark or black pigmented and very moist
-Dermal papilla directs and supports hair growth, enclosed by hair matrix
Catagen - ANSWER -Brief transitional stage
-Last only a few days to a few weeks
-Hair folicle seperates from the papilla
-The hair shaft bulb is lighter or brown pigmented and lighter
-Hair folicle shorts 1/3 of its former length
-In late catagen, the thin cord of epidermal cells attaching the dermal papilla to the shrunken hair reacts
upwards, followed by underlyin g hair papilla, which also movesz upwards.
Telogen - ANSWER -Resting or dormant period
-The papilla has detached from the follicle
- a "club" hair is terminal hair that has separated from the papilla that has risen to the top of the follicle.
eventually, it falls out
-The hair bulb has shrunken, is white, and consists of keratinized hair matrix cells
-Sometimes the follicle doesn't go through this phase.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller shantelleG. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.99. You're not tied to anything after your purchase.
