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Flashcards in Integument Deck (58)
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1

What are the 5 layers on skin?

Stratum corneum
Stratum Lucidum
Stratum granulosum
Stratum spinosum
Stratum basale

2

Where does cell division of skin cells happen?

Stratum basale

3

What are the 2 layers of the dermis?

Papillary layer
Reticular layer

4

Characteristics of the papillary layer of the dermis

Dermal ridges interdigitate with rete pegs of the epidermis

5

Which layer is the thickest layer of the dermis?

Reticular

6

What is the most common cell of the epidermis?

Keratinocytes

7

What 2 cancers generally arise from keratinocytes?

Basal cell carcinoma
Squamous cell carcinoma

8

What are Langerhans cells?

Antigen-presenting cell found in Stratum spinosum

9

Where do melanocyte originate from?

Neural crest

10

What cells accept melanin from melanocytes?

Keratinocytes

11

What is a Merkel cell?

Modified keratinocyte in contact with nerve ending

12

Is the hair follicle continuous with the epidermis of the skin?

Yes

13

What are the sections of the hair?

Cuticle
Cortex
Medulla (thick hair)

14

What is the difference between the root and the shaft of hair?

Root is embedded in follicle
Shaft protrudes from surface

15

What does the bulb of the hair surround in the dermis?

Dermal papilla

16

Where is the cuticle located?

Between hair & inner root sheath

17

Where is the 'glassy' basement membrane of the hair follicle located?

Between outer root sheath & connective tissue

18

Where are dividing cells located?

Bulb

19

Where are the cells that form the medulla located?

Tip of dermal papilla

20

Where are the cells that form the side of the hair located?

Cortex

21

Where do the cells for the cuticle and inner root sheath form?

Base of papilla

22

What are the 3 hair types?

Guard
Wool
Sensory

23

Where are the nerve endings located in tactile hairs?

Connective tissue

24

What is the main difference between tactile and normal hair?

Tactile hair has venous sinus

25

The venus sinus in tactile hair divides which layer of the follicle in to 2 layers?

Connective tissue sheath

26

What 2 types of tissue is the hoof made of?

Tubular horn
Intertubular horn

27

What is the purpose of intertubular horn?

Holds tubular horn together

28

What layer produces cells for hoof growth?

Stratum basale

29

Similar to the epidermis, the hoof receives blood supply from the underlying connective tissue (dermis). What is this called in the horse?

Corium

30

What is the coronet?

Junction of hoof wall & skin