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integumentary system > Hair > Flashcards

Flashcards in Hair Deck (22)
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1
Q

Pulls hair upright when cold or frightened

A

Arrector pili muscle

2
Q

What type of cells are in hair

A

Hard keratinized epithelial cells

3
Q

Provide pigment for hair color

A

Melanocytes

4
Q

Extends from the scalp or skin

A

Shaft

5
Q

Supplies blood to dermal sheath

A

Dermal sheath

6
Q

Where does hair grow from

A

Matrix of the hair bulb in stratum basale

7
Q

Provides durability and keep hairs apart

A

Cuticle

8
Q

What is the epidermal sheath made of

A

Epithelial tissue

9
Q

From inside out the regions of the hair shaft

A

Medulla
Cortex
Cuticle

10
Q

Humans are born with how many hair follicles

A

As many as they will ever have

11
Q

Is among the fastest growing tissues in the body

A

Hair

12
Q

Most heavily keratinized part of the hair follicle

A

Cuticle

12
Q

Single layer of cells that overlap like root shingles

A

Cuticle

13
Q

What surrounds the hair root

A

Dermal and epidermal sheath

14
Q

Forms the hair

A

Epidermal sheath

16
Q

What is the dermal sheath made of

A

Connective tissue

17
Q

Area enclosed by the follicle

A

Root

17
Q

Connects to each side of the follicle

A

Arrector pili muscle

19
Q

What causes split ends

A

Cuticle wears away at the tip which allows keratin fibers to frizz out

20
Q

What is goosebumps

A

When the arrector pili muscles pulls hairs upright

21
Q

Dead cells of the hair

A

Shaft

22
Q

What produces hair

A

Hair follicle