Integumentary System

Question 1

What are the parts of the integumentary system?

Answer 1

Hai, skin, nails

Question 2

What are the three skin layers?

Answer 2

Epidermis, dermis, hypodermis

Question 3

How much of the body weight comes from skin?

Answer 3

7-8%

Question 4

What can stop skin wrinkles?

Answer 4

Nerve damage

Question 5

Where are the nerves and blood vessels?

Answer 5

Dermis

Question 6

Is skins waterproof?

Answer 6

No it’s water resistant

Question 7

Where is vitamin D synthsised

Answer 7

The epidermis

Question 8

What is vitamin D used for?

Answer 8

Absorbing calcium and phosphorus

Question 9

What is rickets?

Answer 9

Caused by a lack of UV and results in low vitamin D

Question 10

What are epidermal dendritic cells?

Answer 10

They phagocytize pathogens that penetrated the epidermis

Question 11

How many layers are there in the epidermis?

Answer 11

4 everywhere but 5 on palms soles and lips

Question 12

How thick is the epidermis?

Answer 12

30-35 cell layers

Question 13

What are the five layers of the epidermis?

Answer 13

Stratum Corneum, Stratum Lucidum, Stratum Granulosum, Stratum Spinosum, and Stratum Basale

Question 14

What causes skins pink color?

Answer 14

Blood vessels in the dermis

Question 15

What causes dandruff?

Answer 15

Yeast called pityrosporum and malassezia

Question 16

What is the most common cell type in the epidermis?

Answer 16

Kerotinocytes

Question 17

What cells resemble nerve cells?

Answer 17

Merkel cells

Question 18

What I’d the deepest layer of the epidermis?

Answer 18

Stratum Basale

Question 19

What does the Spinosum layer look like?

Answer 19

Spine like projections

Question 20

What layer is the beginning of cell death?

Answer 20

Stratum Granulosum

Question 21

Which layer is only in the lips, soles, and palms?

Answer 21

Stratum Lucidum

Question 22

What is the purpose of the Stratum Lucidum?

Answer 22

Helps with friction

Question 23

What is the top layer of the epidermis?

Answer 23

Stratum Corneum

Question 24

Which layer constantly sheds?

Answer 24

Stratum Corneum

Question 25

What is cornification?

Answer 25

Caused by kerarinization and hardening

Question 26

What is a callus?

Answer 26

Result of stimulating mitotic activity of the Stratum Basale

Question 27

Where must a tattoo be in order to be permanent?

Answer 27

Must be in the dermis

Question 28

Where did Otzi have tattoos?

Answer 28

Over pain areas

Question 29

What affects skin color?

Answer 29

Melanin

Question 30

Where is hemoglobin?

Answer 30

In red blood cells

Question 31

What is albinism?

Answer 31

Lack of melanin production

Question 32

What is vitiligo?

Answer 32

Causes depigmentation of parts of skin

Question 33

What is cynosis?

Answer 33

Reduces oxygenation of hemoglobin in blood vessels

Question 34

What is pallor?

Answer 34

A deficiency of erythrocytes, a deficiency of hemoglobin or both

Question 35

What causes jaundice?

Answer 35

Cause by the hemoglobin breakdown product bilirubin.

Question 36

What is erythema?

Answer 36

Caused by increase blood flow in the dermis because of dilated blood vessels

Question 37

Where does blood go when you die?

Answer 37

Pools at the lowest point in the body

Question 38

What can cause a more orange skin color?

Answer 38

Carotene

Question 39

What do you need to synthesize hemoglobin?

Answer 39

Iron

Question 40

How do people get freckles?

Answer 40

Genetically inherited

Question 41

What causes fingerprints?

Answer 41

Dermis upswelling

Question 42

What is a mole (nevus)?

Answer 42

A normmalt harmless localized overgrowth of melanin producing cells

Question 43

How many layers are in the dermis?

Answer 43

2 layers

Question 44

What is in the dermis?

Answer 44

Blood vessels and nerves fibers

Question 45

What are the two layers of the dermis?

Answer 45

Stratum Papillarosum and Stratum Reticulossum

Question 46

What does the stratum Papillarosum do?

Answer 46

Provides nutrients for the dermis

Question 47

Which dermis layer causes fingerprints?

Answer 47

Stratum Papillarosum

Question 48

What causes stratch marks?

Answer 48

Damage in the stratum Reticulossum

Question 49

What causes wrinkles?

Answer 49

Decrease of tension in the Stratum Reticulossum

Question 50

What process can help maintain heat?

Answer 50

Vasoconstriction

Question 51

What process helps maintain heat?

Answer 51

Vasodilation

Question 52

What are decubitus ulcers?

Answer 52

Bed sores

Question 53

What did Christopher Reeve die from?

Answer 53

Bed sores

Question 54

What does the hypodermis consist of?

Answer 54

Connective tissue, blood vessels, and fat

Question 55

What are nails?

Answer 55

Hardened stratum cordeum

Question 56

What are Beau's lines?

Answer 56

Indications of stress or illness in the nails

Question 57

What is pili?

Answer 57

Hair

Question 58

Where is hair produced?

Answer 58

Folicle in the epidermis

Question 59

What is the function of the Arrector Pili?

Answer 59

Muscle that pulls the hair straight

Question 60

What is the vomeronasal organ?

Answer 60

Picks up chemical signals called pheromones

Question 61

What do some biologist think pheromones do in humans?

Answer 61

They may affect fertility and behavior

Question 62

What do the Sudoriferous glands (sweat glands) do?

Answer 62

Temperature regulation and waste management

Question 63

What are the mammory glands?

Answer 63

Specialized sweat glands that produce milk

Question 64

Ceraminus glands do what?

Answer 64

Specialized sweat glands that produce ear wax

Question 65

What are Sabaceous glands (oil glands)?

Answer 65

They make sebum to keep hair and skin supple

Question 66

What causes blisters?

Answer 66

Damage to the dermal blood vessels