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Anatomy > Chapter 5 epidermis > Flashcards

Chapter 5 epidermis Flashcards

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1
Q

What is the skin integumentary system

A

Study of skin dermatology

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2
Q

What is the integument Terry system first line of defense?

A

Epidermis 2 mm thick

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3
Q

Why is vitamin D synthesis needed

A

For calcium absorption

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4
Q

What is mechanical damage?

A

Pressure receptors alert and nervous system to possible damage

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5
Q

What are chemical damages

A

Acid/bases and keratinized so relatively impermeable

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6
Q

What is oleoresidence?

A

Comes from poison ivy that causes dermatitis

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7
Q

What causes bacterial damage

A

Acid secretion inhibits bacterial phagocytes and just foreign substance and pathogen

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8
Q

What do melon sites produce

A

They produce melanin

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9
Q

What is melanin

A

Pigment for skin

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10
Q

What is thermal damage?

A

Hot/cold heat/cold/pain receptors

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11
Q

What is desiccation

A

Drying out, Charitan; waterproofing substance

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12
Q

What are Sudiferis glands

A

Sweat glands

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13
Q

What is perspiration

A

Urea, salt, water

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14
Q

What is the epidermis?

A

Superficial region which covers the entire body surface covers deepest layer of the dermis

( gets by through diffusion)

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15
Q

What is dermis

A

Underlies epidermis ( mostly Fiberous connective tissue) aka blood vessels, nervous

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16
Q

What is hyper dermis

A 
Sub cutaneous (fat)
Not part of the skin but shares some function 
Mostly adipose (fat) tissue that absorbs shock
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17
Q

What’s dengritic cell

A

Immune system of cell

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18
Q

What is keratin cell ( keratin protein)

A

Most numerous of cells( epidermis is formed of kerotcytes)

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19
Q

What is keratinized stratified squamos epithelium

A

Epidermis

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20
Q

What are the distinct layers of the epidermis?

A 
Stratum basale
Stratum spinosm
Stratum granulosm
Stratum luciderm( only in thick skin)
Stratum corneum

(Come let’s get sunburn)

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21
Q

What are the four cell types

A

Keratinocytes
Melanocytes
Dendritic ( langhern cells)
Tactile ( merkel)cells

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22
Q

What is the epidermis?

A

Superficial region (covers entire body surface, covers deepest layer of dermis)

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23
Q

What is the dermis?

A

Underlies epidermis ( mostly fiberous connective tissue ) blood, bustles, nervous

It gets Buy through diffusion

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24
Q

What is the hyper dermis

A

Subcutaneous far not part of skin but shares same function
Mostly adipose far
Anchors skin to underlying function

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25
Stratum basale (layers)
Also called stratum germinivation ``` Firmly attaches to dermis Single row of stem cells Produces two daughter cells One sells journey from basil to surface Takes 25 to 45 days Dies as move toward surface ```
26
What is stratum spinosum (prickly layers)
4th layer | It's SEVERAL Layers thick held together by desmosomes
27
What's the glandular layer?
``` Thin 4-6 layers Cells appearance changes Flattened cells Keratanized begins Cells above this layer die ```
28
Statum Lucium
Clear transparent found in palms and foot of soles
29
What is the integumentary system and what does it consist of
It helps maintain a constant body temperature, protects the body and provide sensory information. It is composed of skin, hair, oil and sweat glands, nails and sensory receptors
30
What is the epithelial tissue composed of
The epidermis
31
What is the epidermis
The superficial thinner portion
32
What is the dermis
The deepest thicker connective tissue
33
What part of the epidermis and dermis is vascular versus a vascular
The epidermis is a vascular the dermis is vascular
34
What is the subcutaneous layer
It is also called the hypodermis and consist of Arielar and adipose tissue's
35
What is the lamellated corpuscles?
Nerve endings which the subcuntaneoua aka hypodermis have
36
What are keratinocytes
They are four or five layers and produce a protein called keratin
37
What is keratin
A tough protein that helps protect the skin and underlying tissues from abrasions heat etc
38
What are melanocytes
They produce melanin and develop in the ectoderm
39
What is melanin
A yellow – red or brown – black pigment that contributes to skin color and absorbs damaging UV light
40
What is intraepidermal macrophages aka langhern cells
They come from Red bone marrow and migrate to the epidermis. Their role in the Muni response is to help other cells of the immune system recognize in invading Microbe and destroy it
41
What are Merkel self a.k.a. tactile epithelial cells
They are the least numerous of the epidermal cells located in the deepest layer of the epidermis
42
What is tactile desk or Merkel disc
They detect touch sensation
43
How many layers does the epidermis have
Four layers
44
What are the layers of the epidermis
Stratum basale Stratum spinosum Stratum granulosum Stratum corneum
45
What is the layer stratum basale
Its the deeepest layer. It's composed of single row of cuboidal or columnar keratinocytes.some cells in the layer are stem cells that undergo cell division to continually produce keratincocytes
46
What is Stratam granulosum
It's located in the middle of the epidermis and consist of 3 to 5 layers of flattened keratinocytes that undergo apoptosis ( aka cell programmed death which the nucleus fragements before it dies)
47
What is keratohyaline
Assembles keratin intermediate filaments into keratin
48
How long does it take for newly formed selves in the stratum basil to be pushed to the surface
4 to 6 weeks
49
What is basale of the epidermal strata
The deepest layer composed of single row cuboidal or columnar keratinocytes
50
What is spinosum
8 to 10 rows of many sided keratinocytes with bundles of Keratin
51
What is granulosum
325 rows of Latin keratinocytes and which organelles begin to degenerate
52
What is Lucidum
Present only in skin of fingertips, palms and soles | Has 4 to 6 rolls of clear, flat, dead keratinocytes with large amounts of keratin
53
What is corneum
Few to fifty or more rows is dead flat keratinocytes that contain mostly keratin
54
What is the reticular region of the dermis
It is attached to the sub cutaneous layer and contains bundles of the collagen fibers and various cells
55
What is dermatoglyphics
The study of the pattern of epidermal ridges
56
What are tension lines
They are lines of cleavage in the skin indicating predominate direction of underlying collagen fibers (tension lines are especially important to plastic surgeons, if they don't want to leave big scars.)
57
What is papillary?
Superficial portion of the dermis consist of areole or connective tissue within collagen and fine elastic fibers
58
Where is hair not present
The fingers souls and palms
59
What is Subacious skin glands
Aka oil glands They are simple branch Acinar rounded glands They live in the dermis and usually open into the neck of a hair follicle
60
What are sudofuris aka sweat glands
Glands that release sweat into hair follicules
61
What are Eccrine sweat glands
They are simple coiled tubular glands that are much more common than Apocrine sweat glands They are distributed through the skin of most regions of the body like for her palms and soles
62
What is Thermo regulation
Regulation of body temperature
63
What is Apocrine sweat gland found in armpits breast and face of males
Simple coil tubular plans they have larger docs and lumens
64
What is the free edge in the nail
The free urges white because there are no underlying capillaries
65
What is the nail root
The portion of the nail. In a fold of the skin
66
What is basal cell carcinoma
Abnormal growth of stratum basal cells
67
What is squamous cell carcinoma
Abnormal growth of squamous epithelium
68
What is malignant melanoma
Abnormal growth of melanocytes
69
How is the seriousness of this or degree of a burn determine
By the depth The amount of the area involved persons age and general state of health

Anatomy (6 decks)

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