FRSC 2600 EXAM 3 QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS VERIFIED GRADED A++
What are the growth phases of hair?
Anagen, catagen, and telogen
What cannot be determined from hairs?
Age and sex
The root bulb is flame-shaped, is actively growing, 2-5 years
Anagen Phase
The root is elongated, hair roots start degenerating, 1-2 weeks
Catagen Phase
The root is cotton swab-shaped, the resting phase for the follicle, 3-6 weeks
Telogen Phase
On macroscopic scale, hair has a ______,______,_______
root, shaft, and tip
When pulled from the root, some hairs in the anagen phase have a _______ ___
follicular tag
In making a hair comparison, a __________ __________ is an invaluable tool that
allows the examiner to view the questioned and known hair together, side by side
comparison microscope
A series of overlapping layers of scales that form a protective coating
Cuticle
Main body of the hair shaft, consists of spindle-shaped cells
, Cortex
Dispersed variably throughout the cortex
Pigment granules
Large, solid structures that are spherical to oval in shape, with very regular
margins
Ovoid bodies
Irregularly shaped air spaces
Cortical fusi
A central core of cells that may be present in the hair
Medulla
What can be determined from a human hair examination?
1. Body area
2. Race
3. Damaged, artificially treated
4. Forcibly removed or naturally shed
5. Microscopic characteristics/comparison
6. Suitability for DNA analysis
In _________ ________, the structure of the medulla is frequently very regular and
well defined
animal hairs
Typically, only _______ and _______ hairs are suitable for microscopic
examination
head, pubic
COMPLETE SOLUTIONS VERIFIED GRADED A++
What are the growth phases of hair?
Anagen, catagen, and telogen
What cannot be determined from hairs?
Age and sex
The root bulb is flame-shaped, is actively growing, 2-5 years
Anagen Phase
The root is elongated, hair roots start degenerating, 1-2 weeks
Catagen Phase
The root is cotton swab-shaped, the resting phase for the follicle, 3-6 weeks
Telogen Phase
On macroscopic scale, hair has a ______,______,_______
root, shaft, and tip
When pulled from the root, some hairs in the anagen phase have a _______ ___
follicular tag
In making a hair comparison, a __________ __________ is an invaluable tool that
allows the examiner to view the questioned and known hair together, side by side
comparison microscope
A series of overlapping layers of scales that form a protective coating
Cuticle
Main body of the hair shaft, consists of spindle-shaped cells
, Cortex
Dispersed variably throughout the cortex
Pigment granules
Large, solid structures that are spherical to oval in shape, with very regular
margins
Ovoid bodies
Irregularly shaped air spaces
Cortical fusi
A central core of cells that may be present in the hair
Medulla
What can be determined from a human hair examination?
1. Body area
2. Race
3. Damaged, artificially treated
4. Forcibly removed or naturally shed
5. Microscopic characteristics/comparison
6. Suitability for DNA analysis
In _________ ________, the structure of the medulla is frequently very regular and
well defined
animal hairs
Typically, only _______ and _______ hairs are suitable for microscopic
examination
head, pubic
