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Science For Med A ellen > Skin > Flashcards

Flashcards in Skin Deck (22):
1

What are the names of the two skin layers?

Epidermis and Dermis?

2

What name is given to the layer beneath the dermis?

Hypodermis

3

What is the structure and function of the hypodermis?

Adipose layer
Anchors skin to underlying structures

4

Describe the tissue making up the epidermis skin layer?

Stratified squamous keratinising epithelial tissue

5

What are the four main cell types found in the epidermal layer?

1. Keratinocytes
2. Melanocytes
3. Langerhans cells
4. Merkel cells

6

What is the function of keratinocyte cells?

- Structural role to keep other epidermal cells in place
- Role in immunity

7

What is the function of melanocyte cells?

Form pigment

8

What is the function of Langerhans cells?

Immune surveillance

9

What is the function of Merkel cells?

Touch receptors

10

Name the five epidermal layers from skin surface to dermis.

1. Stratum Corneum
2. Stratum Lucidium
3. Stratum granulosm
4. Stratum spinosum
5. Stratum basale

11

Which epidermal layer involve the conversion of keratohyalin to keratin?

Stratum corneum and stratum lucidium

12

Which layer contains granules of keratohyalin?

Stratum granulosm

13

In which layer are cells bound to the basement lamina by hemidesmosomes?

Stratum basale

14

What is meant by keratinisation?

Organic process whereby keratin is deposited in cells, making them appear horny.

15

What are the two dermal skin layers?

1. Papillary layer
2. Reticular layer

16

What type of tissue makes up the papillary layer of the dermis?

Loose connective

17

What type of tissue makes up the reticular layer of the dermis?

Dense irregular connective

18

What cells are responsible for the waterproof nature of skin?

Keratinocytes in the epidermis

19

What is the name of the muscle attached to a hair follicle?

Arrector pili muscle

20

What type of gland is an eccrine sweat gland?

Simple tubular with watery secretion

21

In what layer of the skin are eccrine sweat glands found?

Dermis

22

What features of the skin allow thermoregulation?

1. Swet glands
2. Blood vessel dilation
(3. Hair- but not in humans)