3 - The skin, hair and nails Flashcards

1
Q

Major Functions of the skin

A

Heat regulation, sensation, protection, excretion, secretion, synthesis of vitamin d

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2
Q

Minor functions of the skin

A

Immunity, blood reservoir communication

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3
Q

What does dermatology mean?

A

The study of the skin

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4
Q

What is skin?

A

Cutaneous membrane. 1: epidermis layer. 2:dermis layer.

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5
Q

How many sub layers is the epidermis layer made of?

A

5

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6
Q

How many sun layers is the dermis layer made of ?

A

2

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7
Q

Names of the 2 dermis layers

A

Papillary layer ; nipple shaped projections

Reticular layer; varying thickness of the skin

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8
Q

Name the 5 layers of the epidermis layer ?

Stratum ….

A
Stratum Corneum
Stratum lucidum 
Stratum granulosm 
Stratum spinosum 
Stratum basale
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9
Q

Lanugo

A

Soft hair ; found in foetus 3rd to 8th month

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10
Q

Vellus hair type

A

Soft and downy; everywhere on the body except eyelid, palm of hands, lips and nipples

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11
Q

Terminal hair type

A

Long, coarse ; found on head, eyebrows, eyelashes, armpits and Punic area

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12
Q

Germinal Matrix

A
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13
Q

Nail bed

A
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14
Q

Cuticle

A
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15
Q

Eponychium

A
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16
Q

Nail plate

A
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17
Q

Free edge

A
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18
Q

Nail groove

A
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19
Q

Nail mantle

A
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20
Q

Lunula

21
Q

Hyponychium

22
Q

Nail wall

23
Q

Sebaceous gland is?

A

Secretes sebum aka oily glands. Acts as Lubricant for hair and skin

24
Q

Sudoriferous glands

A

Excrete sweat onto the surface of the skin.

25
Pterygium
Overgrowth of the cuticle
26
Onychophagy
Nail biting
27
Onychocryptosis
Ingrowing nail
28
Leuconychia
White nails or white spots on nail
29
Koilonychia
Spoon nail
30
Varicella
Chickenpox
31
Rubeola
Measles
32
Herpes zoster
Shingles
33
Herpes simplex
Cold sore
34
Comedones
Blackheads
35
Erythema
Redness of the skin
36
Ephelides
Freckles
37
Tinea corporis
Ring worm
38
Tinea
Ringworm
39
Pediculosis
Lice
40
Capitis
Scalp or head
41
Corporis
Body
42
Pedis
foot
43
Candidiasis
Thrush or yeast infection
44
Hordeolum
Stye
45
Urticaria
Hives or nettle rash
46
What is the Papillary layer composed of?
Areolar connective tissue, fine elastic fibres nipple shaped finger like projections called papillae. Loops of capillaries
47
What is the reticular layer made of ?
``` Connective tissue, bundles of collagen and elastic fibres. Hair follicles Nerve endings Oil glands Ducts of sweat glands Adipose tissue. ```
48
Pathologies of skin hair and nails
Check screen shots for all
49
Cycle of hair
Anagen: hair thickens Catagen: hair roots start degenerating Telogen: hair growth stops or rests Early - anagen : hair sheds or falls out and new hair grows.