Hair/Fibers/Microscope Review

What is the structure of hair?

• Root, Stem, Leaf

• Inner, Middle, Outer

• Core, Shell, Surface

• Medulla, Cortex, Cuticle

What are the different layers of the hair shaft?

• Root, Stem, Leaf

• Top, Middle, Bottom

• Medulla, Cortex, Cuticle

• Inner, Outer, Middle

What are the techniques used for hair analysis?

• X-ray analysis

• Thermal imaging

• DNA sequencing

• Microscopy, spectroscopy, chromatography, and mass spectrometry

What is the importance of hair analysis in forensic science?

• It can provide information about a person's identity, drug use, and lifestyle.

• It can predict a person's future career

• It can determine a person's favorite color

• It can reveal a person's favorite food

How can a microscope be used to analyze hair?

• By using it to measure the length of the hair

• By using it to taste the hair

• By magnifying the hair strands and allowing for a closer examination of the hair's structure, texture, and any potential abnormalities.

• By using it to listen to the sound of the hair

What are the characteristics of human hair under a microscope?

• Scale patterns, medulla, cortex, and cuticle are the main characteristics of human hair under a microscope.

• Blood vessels, nerves, muscles, and bones

• Pores, wrinkles, blemishes, and freckles

• Color, length, thickness, and texture

What are the differences between human and animal hair under a microscope?

• The differences include the length, curliness, and thickness.

• The differences include the consistency of diameter, color uniformity, and structural complexity.

• The differences include the ability to grow, the shedding pattern, and the ability to change color.

• The differences include the smell, texture, and taste.

What are the steps involved in hair fiber examination?

• Measuring the length of the hair samples

• Dyeing the hair samples in different colors

• Testing the hair samples for DNA

• Collection of hair samples, microscopic examination, comparison with known standards, and analysis of any trace evidence present

What are the different types of hair fibers?

• Thick, thin, rough, and smooth

• Straight, wavy, curly, and coily

• Short, medium, long, and extra long

• Red, blue, green, and yellow

How can hair evidence be used in criminal investigations?

• By comparing the hair found at the crime scene to animal hair to identify the suspect

• By analyzing the color and texture of the hair to determine the suspect's lifestyle

• By using the hair to create a sketch of the suspect's face

• By linking a suspect to a crime scene or victim through DNA analysis if the follicle is present.