Hair

The most important structure for the individualization of hair (identity).

• Medulla

• Cuticle

• Cortex

• Follicle

Which scale pattern is indicated?

• Coronal

• Spinous

• Imbricate

• None of these

Tags

NGSS.MS-LS4-2

Which scale pattern is indicated?

• Coronal

• Spinous

• Imbricate

• None of these

The hair shaft is composed of what important protein?

• Cellulose 

• Chitin

• Peptidoglycan

• Keratin

Tags

NGSS.HS-LS1-6

The hair follicle is dormant and hairs are easily lost during which stage of the hair life cycle?

• Anagen

• Telogen

• Catagen

• Metagen

Which scale pattern identifies human hair?

• Imbricate

• Coronal

• Spinous

• None of these

Using the pencil analogy, which structure corresponds to the paint on the surface?

• Follicle

• Cortex

• Cuticle

• Medulla

The transitional or regressive stage that lasts a few weeks during which hair growth slows is called...?

• Anagen

• Telogen

• Catagen

• Metagen

We know hair is from a human if…

• The medullary index is 0.5 or greater           

• The medullary index is 0.33 or less

• The cuticle is coronal

• The medulla is fragmented

The following medulla pattern is called

• fragmented 

• continuous

• interrupted