Chapter 5: Integument Flashcards

1
Q

The integumentary system consists of….

A
Hair
Skin
Nails
Sweat glands
And sebaceous glands
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2
Q

What the single largest organ in our body

A

The skin

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3
Q

What does the skin do

A

It’s the first line of defense that protects us from pathogens

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4
Q

What are the three layers of the skin

A

Epidermis
Dermis
Hypodermis

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5
Q

The outermost portion of skin

A

Epidermis

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6
Q

Often called the ”true skin”

A

Dermis

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7
Q

2nd most lower portion of skin

A

Dermis

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8
Q

Most superficial region of skin

A

Epidermis

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9
Q

Melanocytes

A

Calls that produce pigment melanin

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10
Q

Region exposed to external environment

A

Epidermis

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11
Q

Region that functions to protect

A

Epidermis

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12
Q

Avascular region of skin

A

Epidermis

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13
Q

Partially dead portion of skin

A

Epidermis

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14
Q

Region that’s composed of keratinozed stratified squamous epithelium

A

Epidermis

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15
Q

Region that consists of 4 cell types and 4 layers

A

Epidermis

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16
Q

Cell that produce fibrous brown pigment melanin

A

Malanocytes

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17
Q

What does melanin do

A

Gives iris in Eye color

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18
Q

The more melanin one produce the…

A

Darker their skin

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19
Q

What are keratinocytes

A

Calls that produce fibrous protein keratin

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20
Q

What is keratin

A

A fibrous protein

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21
Q

What does keratin do

A

Gives skin protective properties

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22
Q

Cells that produce keratin

A

Keratinocytes

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23
Q

What are dendritic cells

A

Epidermal macrophages

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24
Q

What do dendritic cells do

A

Help active the immune system

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25
Cells that help active the immune system
Dendritic cells
26
What are the cells of the epidermis
Keratinocytes Dendritic Melanocytes Merkel cells
27
What are merkel cells
Touch receptors in association with sensory nerve endings
28
Another name for merkel cells
Tactile
29
Tightly connected by desmosomes
Merkel cells
30
What is two ways to classify epidermis region
Keratinized vs non-keratinized
31
Keratinized
Dry dead cells in surface of skin
32
Produce keratin that help form protective water barrier
Keratinized epidermis
33
In mouth and internal linings
Non-keratinized epidermis
34
Non-keratinized epidermis
Found in mouth and internal linings
35
What does non-keratinized epidermis do
Help form a supportive layer
36
Middle region of skin
Dermis
37
Alive region
Dermis
38
Mostly fibrous connective tissue
Dermis
39
Vascular
Dermis
40
Region where vitamin D is made
Dermis
41
Dermis region
Have connective tissue that helps dermis hold to epidermis
42
What are the cells of the dermis
Fibroblasts Mast cells Macrophages And white blood cells
43
White blood cells
Help fight infections
44
Mast cells
Help with allergic reactions
45
Fibroblasts
Make fibers in connective tissue
46
Macrophages
Do phagocytosis
47
Deep innermost layer
Hypodermis
48
Consists of editors n connective tissue
Hypodermis
49
Another name for hypodermis region
Subcutaneous layer
50
Not part of skin but share some functions
Hypodermis
51
Makes fossa
Hypodermis
52
What does the adipose tissue in the hypodermis do
Absorbs, shock and insulated
53
Anchors skin to unfeeling structures like the muscles
Hypodermis
54
Mostly adipose and areolar connective tissue
Hypodermis
55
Appendages of skin
Hair Nails Sweat glands Sebaceous glands
56
Filamentous strands of dead keratinized cells
Hair
57
Hair is
Produced by hair follicle
58
Hard keratin
Hair
59
Made of soft keratin
Skin
60
Consists of a core called medulla, cortex and an outermost cuticle
Hair
61
Medulla part of hair
Middle
62
What the medulla is wrapped around
Cortex
63
What hold hair together
The cuticle
64
Hair is made of what
The shaft projecting from skin and roof embedded in the skin
65
What is found at the base of hair
Melanocytes
66
Hair follicle
Root sheath
67
Where does the hair follicle go
Extends from the epidermal surface to dermjs
68
The deep end of hair is
Expanded forming a hair bulb
69
What is found on each Jesus bulb
Hair plexus
70
Hair plexus are
A knot of sensory nerve endings
71
What does bending a hair do
Stimulates the nerve endings acting as a sensitive touch receptor
72
Sweat glands
Prevents overheating of the body | Secrets cerumen and milk
73
Exccrine glands are
Found all over the body mostly palms, soles of feet, and forehead
74
Thermoregulation
Release heat and heater | Sweat evaporation
75
Apocrine glands
Found in axillary and genital areas
76
When do apocrine glands function
At puberty
77
What is the function of epocrine glands
Responsible for body odor because of bacteria breakdown of oils
78
Can be found in other mammals
Apocrine glands
79
Ceruminous glands
Modified apocrine glands in external ear canal that secrete cerumen
80
Mammary glands
Specialized sweat glands that secrete milk
81
Sweat glands found only in mammals
Mammary glands
82
Sweat glands found in external ear opening
Ceruminous glands
83
Kinds of sweat glands
Eccrine Apocrine Ceruminous And mammary
84
Simple alveolar glands found all over the body
Sebaceous glands
85
Oil glands
Sebaceous glands
86
Which glands soften skin when stimulated by hormones
Sebaceous glands
87
Associated with hair follicles
Sebaceous glands
88
Name a major function of the integumentary system
Protection
89
A chemical, physical and mechanical barrier
Integumentary system
90
Body temperature in the integumentary system is accomplished by
Dilation and constriction of dermal vessels
91
Dilation
Cooling
92
Constriction
Warming
93
What are exoreceptors that sense touch and pain
Cutaneous sensation
94
What is the synthesis of Vitamin D in dermal blood vessels
Metabolic functions
95
What is blood reservoir
Skin blood vessels store up to 5% of the body’s blood volume