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Histology 101 > Skin > Flashcards

Skin Flashcards

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1
Q

Layers of the skin

A
  1. Stratum corneum
  2. Stratum granulosum
  3. Stratum spinosum
  4. Stratum basale
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2
Q

What is epidermal adnexae?

A

Down growths of epidermis into dermis and subdermis

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3
Q

Where do you find apocrine glands?

A

Armpits, groin, genitala, around anus

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4
Q

What do sebaceous glands secrete?

A

Contents of entire cells onto hair surface

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5
Q

What is the function of sebaceous glands

A

To lubricate and waterproof hairs

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6
Q

Where do you find sebaceous glands

A

Accompanying hair follicles

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7
Q

Where do you find eccrine glands

A

Everywhere

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8
Q

What do rete pegs do?

A

Anchor epidermis to the dermis

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9
Q

What does the dermis contain?

A

Fibroblasts, collagen, glycosaminoglycan matrix, sensory cells and some inflammatory cells

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10
Q

What do meissners corpuscles sense?

A

Fine touch

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11
Q

What do pancinian corpuscles detect

A

Vibration and tickle

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12
Q

What is the subcutis

A

White adipose tissue - insulates and is a shock absorber

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13
Q

Where are melanocytes present

A

In the basal layer

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14
Q

What do melanocytes do

A

Synthesise melanin and transfer to neighbouring keratinocytes via melanosomes

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15
Q

What stimulates melanin production

A

MSH - melanocyte stimulating hormone

ACTH - adrenocorticotrophic hormone

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16
Q

How are epidermal cells connected

A

Desmosomes

17
Q

Where does keratin form

A

In the stratum granulosum

18
Q

What is holocrine secretion

A

Where entire cells are lost as secretions

19
Q

What is the composition of eccrine glands

A

2 layers thick
Inner secretory layer
Outer myoepithelial layer

20
Q

What are the two layers of the dermis

A

Papillary and reticular

21
Q

What does the breast contain

A

Myoepithelial system of ducts and lobules

22
Q

What is the difference between male and breasts

A

Males only have ducts and no lobules

23
Q

Breast lobules contain which cells

A

Outer myoepithelial cells (contractile)

Inner columnar epithelial (adapt to produce milk) - become vacuolated

24
Q

What suppresses lactation

A

High levels of oestrogen and progesterone

Histology 101 (14 decks)

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