Epidermis

Question 1

Avascular layer

Answer 1

Epidermis

Question 2

Lies superficial to dermis

Answer 2

Location of stratum basale

Question 3

How does the stratum basale connect to the dermis?

Answer 3

It’s wavy borderline

Question 4

Thick bundles of intermediate filaments

Answer 4

Stratum spinosum

Question 5

Deepest layer of epidermis

Answer 5

Stratum basale

Question 6

The dermis is made of what kind of tissue?

Answer 6

Dense connective tissue

Question 7

How thick is the stratum corneum

Answer 7

20-30 layers thick 3/4 of epidermal thickness

Question 8

Flattened layer of the epidermis

Answer 8

Stratum granulosum

Question 9

Most cells are keratinocytes

Answer 9

Epidermis

Question 10

The epidermis is made out of what tissue?

Answer 10

Stratified squamous epithelium

Question 11

Cytoplasm is full of granules

Answer 11

Stratum granulosum

Question 12

What is the Hypodermis tissue made of?

Answer 12

Adipose tissue

Question 13

A tissue that isn’t technically part of the skin

Answer 13

Subcutaneous tissue

Hypodermis

Question 14

How does the stratum lucidum form?

Answer 14

Formed from dead cells of the deeper strata

Question 15

Cells undergo mitosis
Actively dividing
Daughter cells are pushed to become the more superficial layers

Answer 15

Stratum basale

Question 16

Cornified or keratinized to prevent water loss

Answer 16

Characteristic of epidermis

Question 17

Anchors skin to underlying organs

Answer 17

Function of Hypodermis

Question 19

Clear layer of epidermis

Answer 19

Stratum lucidum

Question 20

Where is the stratum granulosum located

Answer 20

Superficial to stratum spinosum

Question 21

Where is stratum lucidum located

Answer 21

Thick hairless skin of the palms and soles

Question 22

Outermost layer of the epidermis

Answer 22

Stratum corneum

Question 23

Organelles are deteriorating

Answer 23

Stratum granulosum

Question 24

What are the shingle like dead cells in the stratum corneum filled with?

Answer 24

Keratin

Question 25

The stratum corneum rubs and flakes off slowly and steadily as?

Answer 25

Dandruff

Question 26

How often does a new epidermis form

Answer 26

25 to 45 days

Question 27

Outer layer of the skin

Answer 27

Epidermis

Question 28

Produces melanin

Answer 28

Melanocytes

Question 29

As melanin is produced it accumulates in these membrane bound granules

Answer 29

Melanosomes

Question 30

Spider shaped cells

Answer 30

Melanosomes

Question 31

Taken up by keratinocytes

Answer 31

Melanin

Question 32

Melanocytes are most common where?

Answer 32

Stratum basale

Question 33

What determines the amount of melanin produced?

Answer 33

Genetics | Exposure to sunlight

Question 34

Where melanin is concentrated in one spot

Answer 34

Freckles and moles

Question 35

Melanin forms a pigment umbrella over superficial nuclei to shield from what?

Answer 35

UV

Question 36

How does overexposed to uv rays lead to cancer?

Answer 36

Alters the DNA of skin cells

Question 37

Many people infected with what are more likely to have an eruption

Answer 37

Herpes simplex (cold sore)

Question 38

Alert the immune system to threats such as bacterial or viral invasion

Answer 38

Epidermal dendritic cells

Question 39

Associated with sensory nerve endings, serve as touch receptors

Answer 39

Merkel cells

Question 40

Skin functions

Answer 40

``` Protects deeper tissue from Mechanical damage Bacterial damage Chemical damage Thermal radiation Ultraviolet radiation Dessication Synthesizes vitamin d AIDS in excretion of urea AIDS in body heat loss or retention ```

Question 41

Drying out

Answer 41

Dessication

Question 42

Superficial to stratum basale

Answer 42

Stratum spinosum