Show:
Types of hair
Medulla
Life cycle of hair
Cuticles
Cortex
100
shape, length, diameter, texture, and color
What are 3 hair characteristics?
100
medulla
What is the center of the hair called?
100
3 stages
how many stages does hair have?
100
imbricate
What kind of cuticles do humans have?
100
The largest part of the hair shaft
What is the cortex?
200
head hair, eyebrows and eyelashes, beard and mustache hair, underarm hair, body hair, and pubic hair
What are the six types of hair on the human body?
200
continuous, interrupted, fragmented or segmented, solid, and none
What are the five different patterns of medulla pigmentation?
200
anagen, catagen, and telogen
What are the three stages in the life cycle of hair?
200
transparent outer layer of the hair shaft
What are cuticles?
200
melanin granules that give the hair its color.
What does the cortex contain?
300
European
What ancestry is it when the hair appearance is generally straight or wavy?
300
pigmentation granules or be unpigmented
What can the medulla contain?
300
80-90%
what percentage of all human hair is in the anagen stage?
300
Made of scales that overlap one another and protect the inner layers of the hair
What are the cuticles made of?
300
outside the medulla
Where is the cortex located?
400
human hairs
What kind of hair is usually one color along the length?
400
double medulla
What can beard hair contain?
400
2% of all hair growth and development stage
What is the catagen stage?
400
looks like a stack of crowns
What are coronal cuticles?
400
uneven color distribution.
What does the cortex look under the compound microscope?
500
African
What ancestry has a flattened with moderate to small diameter and considerable variation cross section?
500
.5 or greater
what medullary index does an animal hair have?
500
blood supply reconnects to the follicle
What happens in the telogen stage?
500
Resembles petals. Cats, seals, and minks have this.
What are spinous cuticles?
500
Melanin.
What are the pigment granules made of?