Anatomy 17 - The Integumentary System Flashcards Preview

Second Year - Anatomy CA21007 > Anatomy 17 - The Integumentary System > Flashcards

Flashcards in Anatomy 17 - The Integumentary System Deck (68)
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1

What is the integumentary system composed of

Skin and associated hair, nails, sensory receptors and sweat glands

2

Functions of the skin

Provides protection, helps maintain homeostasis, temperature control and provides sensory information

3

Three layers of the skin

The epidermis, dermis and hypodermis

4

What is the epidermis composed of

Keratinised stratified squamous epithelium

5

The dermis is made up of

Connective tissue

6

What does the hypodermis have

A rich blood supply and a fat layer

7

What do stratified epithelium protect against

Mechanical abrasion

8

What is the function of the keraatin in the epithelium

To prevent water loss

9

What does the continuos epithelium protect against

Microorgansims

10

What in the dermis proctets against stretching

Elastin and collagen fibres

11

How is temperature regulated

By blood flow, hair, fat and sweat glands

12

What are the different types of cell found within the epidermis

Keratinocytes, melanocytes, Langerhan cells and merkel cells

13

Function of keratinocytes

Produce keratin

14

Function of melaninocytes

To produce the pigemt melanin

15

What does melanin protect from

Damaging UV rays

16

Where do Langerhan cells originate from

Bone marrow

17

Function of Langerhan cells

Protect against microbes

18

Function of merkel cells

To contact the sensory receptors and detect touch sensation

19

What are the layers of the epidermis

Stratum basale, stratum granulosum, stadum lucidum and stratum corneum

20

What is the stratum basale

The deepest layer of columnar keratinocytes

21

What happens within the stratum granulosum

Keratinocytes gradually flatten and undergo apoptosis

22

Where is the stadum lucidum found

On the palms, fingertips and soles of the feet

23

What is the stratum corneum

The final layer of flattened dead keratinocytes

24

In which layer of the epidermis are new cells formed

Stratum basale

25

In which layer can stem cells be found

The stratum basale

26

In what layer of the skin are blood vessels, nerves, hair follicles and glands found

In the dermis

27

Where are epidermal ridges found

On the palms, fingertips and soles of the feet

28

What is degloving

When decomposition causes the epidermis and dermis to separate

29

Melanin pigment that is yellow/red in colour

Phenomelanin

30

Melanin pigment that is brown/black

Eumelanin