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Science For Med A ellen > Skin > Flashcards

Skin Flashcards

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Biology 101 flashcards
1
Q

What are the names of the two skin layers?

A

Epidermis and Dermis?

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2
Q

What name is given to the layer beneath the dermis?

A

Hypodermis

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3
Q

What is the structure and function of the hypodermis?

A

Adipose layer

Anchors skin to underlying structures

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4
Q

Describe the tissue making up the epidermis skin layer?

A

Stratified squamous keratinising epithelial tissue

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5
Q

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

A
  1. Keratinocytes
  2. Melanocytes
  3. Langerhans cells
  4. Merkel cells
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6
Q

What is the function of keratinocyte cells?

A
  • Structural role to keep other epidermal cells in place

- Role in immunity

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7
Q

What is the function of melanocyte cells?

A

Form pigment

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8
Q

What is the function of Langerhans cells?

A

Immune surveillance

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9
Q

What is the function of Merkel cells?

A

Touch receptors

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10
Q

Name the five epidermal layers from skin surface to dermis.

A
  1. Stratum Corneum
  2. Stratum Lucidium
  3. Stratum granulosm
  4. Stratum spinosum
  5. Stratum basale
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11
Q

Which epidermal layer involve the conversion of keratohyalin to keratin?

A

Stratum corneum and stratum lucidium

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12
Q

Which layer contains granules of keratohyalin?

A

Stratum granulosm

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13
Q

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

A

Stratum basale

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14
Q

What is meant by keratinisation?

A

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

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15
Q

What are the two dermal skin layers?

A
  1. Papillary layer

2. Reticular layer

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16
Q

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

A

Loose connective

17
Q

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

A

Dense irregular connective

18
Q

What cells are responsible for the waterproof nature of skin?

A

Keratinocytes in the epidermis

19
Q

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

A

Arrector pili muscle

20
Q

What type of gland is an eccrine sweat gland?

A

Simple tubular with watery secretion

21
Q

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

A

Dermis

22
Q

What features of the skin allow thermoregulation?

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

Science For Med A ellen (20 decks)

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