Chapter 5 - Integumentary System Flashcards
1
Q
Integument
A
- the skin that covers your body
2
Q
Skin
A
- also called cutaneous membrane or integumentary system
- includes accessory organs embedded in it (hair, nails, glands, blood vessels, muscles, nerves)
3
Q
Epidermis
A
- the epithelium of the integument
- keratinized, stratified squamous epithelium
4
Q
Stratum corneum
A
5
Q
Stratum lucidum
A
- thick skin only
6
Q
Stratum granulosum
A
7
Q
Stratum spinosum
A
- thickest layer, several layers of polygonal keratinocytes
8
Q
Stratum germinativum (basale)
A
- also called stratum basale or basal layer
- deepest layer
- single layer
- cuboidal to low columnar shape
- 3 types of cells here: keratinocytes, melanocytes, merkel cells)
9
Q
Dermis
A
10
Q
Hypodermis / Subcutaneous tissue / Superficial fascia
A
11
Q
Keratinocyte
A
- make up 90% of epidermal cells
- slowly move outward as they develop
- change appearance as the migrate
- produce keratin
12
Q
Keratin
A
- tough fibrous protein that provides protection
- produced by keratinocytes
13
Q
Melanocyte
A
- produces melanin
- have long arms & transfer melanin granules to nearby keratinocytes
14
Q
Melanin
A
- pigment that protects against damage by ultraviolet radiation
15
Q
Langerhans (Dendritic) Cells
A
- involved in immune responses
- can migrate
- arise from red bone marrow
16
Q
Merkel disks/cells
A
- function in the sensation of touch
- associated with stratum basale
17
Q
Keratinized vs. Nonkeratinized
A
18
Q
Thick vs. Thin skin
A
- thin: covers most of the body
- thick: found only on bottom of the feet & palms of hands, much thicker epidermis
19
Q
Epidermal ridges
A
20
Q
Dermal papilla
A
21
Q
Papillary layer
A
- loose ct
22
Q
Reticular layer
A
- dense irregular ct
23
Q
Striae & Lines of Cleavage
A
24
Q
Nail Plate
A
- root
- body
- free edge
25
Nail bed and nail matrix
26
Eponychium
= cuticle
27
Hyponychium
28
Lunula
29
Dermatology
the medical specialty for the diagnosis and treatment of disorders of the integumentary system
30
Hair (pilus)
31
Pilosebaceous Apparatus
1. Hair
root & shaft (medulla, cortex, cuticle)
2. Follicle
3. Sebaceous gland
Sebum
4. Arrector pili muscle
32
Lunago
33
Terminal Hair
34
Alopecia
35
Sudoriferous ("sweat") glands
- have merocrine mode of secretion
36
Apocrine sweat gland
37
Eccrine sweat gland
38
Insensible vs. Sensible Perspiration
39
Sweat
- water, salts, urea
40
Acid Mantle
41
Ceruminous gland
42
Cerumen
43
Mammary glands
- milk
44
Burns
First degree -
Second degree -
Third degree -
45
Rule of Nines
46
Rule of Nines (modified for babies)
47
Basal Cell Carcinoma
48
Squamous Cell Carcinoma
49
Melanoma
