Topic Set 13: Hair Structure & Properties
Call Kai
Learn
Practice Test
Spaced Repetition
Match
Flashcards
Knowt Play1/13
There's no tags or description
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced | Call with Kai | Chat |
|---|
No analytics yet
Send a link to your students to track their progress
14 Terms
From what structure do all hairs grow?
Hair follicle
What is the hair shaft?
Portion of hair projecting above the skin
What are the 3 concentric layers of a hair?
Cuticle, cortex, and medulla
What is the cuticle of a hair?
Outer surface layer
What is the cortex of a hair?
Bulk of the hair
What is the medulla of a hair?
Center of the hair
Where is the hair root located?
Below the skin embedded in the dermis
What is the hair bulb?
Enlarged base of the hair root
What is the hair matrix?
Site of cell division for hair growth
What is the function of the hair papilla?
Provides nourishment essential for hair formation
What happens if a hair papilla is destroyed?
No more hair will grow
What is the arrector pili muscle?
Smooth muscle that pulls the hair follicle upright
Why can hair be used for forensic and lab tests?
It concentrates substances over time
What are examples of toxic substances detectable in hair?
Arsenic and lead