Integumentary System Q2

Question 1

7 skin functions

Answer 1

Thermoregulation
Blood reservoir
Protection
Sensation
Excretion
Absorption
Vitamin D syn.

Question 2

Keratinocytes

Answer 2

Epidermis
90%
Water proof

Question 3

Melanocytes

Answer 3

Epidermis
8%
Pigment
Absorb UV

Question 4

Langerhans cells

Answer 4

Infection fighters
Started as wbc
1%

Question 5

Merkel cells

Answer 5

Sensation
Least common
Near nerve ending

Question 6

Thick skin

Answer 6

Stratum Corneum
Stratum Lucidum
Stratum granulosum
Stratum spinosum
Stratum basale

Question 7

Thin skin

Answer 7

Stratum corneum
Stratum granulosum
Stratum spinosum
Stratum basale

Question 8

Stratum Basale

Answer 8

Living cuboidal keratinocytes
Large nuc
Hemidesmosomes
Merkel
Melanocytes
Langerhorns

Question 9

Stratum spinosum is

Answer 9

Living cells
Changing keratinocytes
8-10 thick

Question 10

Stratum granulosum

Answer 10

3-5 cells thick
Squamous keratinocytes
Begin dying
Granules water repellent

Question 11

Stratum lucidum

Answer 11

3-5 layers of dead squamous keratinocytes
Translucent

Question 12

Stratum corneum

Answer 12

25-30 thick
Always shedding outward

Question 13

Papillary region

Answer 13

1/5 dermis

Question 14

Reticular region

Answer 14

Deeper
4/5 dermis
Irreg. CT

Question 15

Eumelanin

Answer 15

Brown black pigment

Question 16

Pheomelanin

Answer 16

Yellow red pigment

Question 17

Pili

Answer 17

Sensory
Protection

Shaft - above surface
Root

Question 18

Medulla

Answer 18

Soft keratin
Center

Question 19

Cortex

Answer 19

Surrounds medulla
Pigment
Hard keratin

Question 20

Cuticle

Answer 20

Surrounds cortex
Flat overlapping cells

Question 21

Follicle

Answer 21

Int. Epitelial root sheath
Ext. epithelial root sheath
Dermal root sheath

Question 22

Papilla

Answer 22

Aerolar CT indent in bulb
Blood vessels
Growth

Question 23

Matrix

Answer 23

Growth
Cell division
Internal epithelial root sheatg

Question 24

Arrector pili

Answer 24

Smooth muscle
Attached to dermal root sheath
Attached to epidermis
Stands hair up

Question 25

Sebaceous glands

Answer 25

Next to hair follicle
Holocrine
Sebum oil

Question 26

Hair root plexus

Answer 26

Nerve endings on hair follicle

Question 27

Vellus hairs

Answer 27

Short fine
Clear
Female heavy

Question 28

Terminal hairs

Answer 28

Longer coarser
Pigmented
Make heavy

Question 29

Suderiferous glands

Answer 29

Sweat glands

Question 30

Eccrine glands

Answer 30

Marocrine
Sweat
Common
Coiled

Question 31

Apocrine glands

Answer 31

Sweat
Armpit groin breast beard
Pheromones
Marocrine
Deepest

Question 32

Ceruminous glands

Answer 32

Ear wax
Only ears
Hypodermis

Question 33

Hyponychium

Answer 33

Nail bed anchor

Question 34

Eponychium

Answer 34

Cuticle

Question 35

Inflammatory phase

Answer 35

Bleeding
WBC histamine
Vasodilation
Blood clot

Question 36

Migratory phase

Answer 36

Scab
Fibroblast
Scar tissue
Epithelial moves down sides

Question 37

Proliferative phase

Answer 37

Epithelium growth under scab
Fills in space
Blood vessels

Question 38

Maturation phase

Answer 38

Scabs sluffs off
Normal thickness again
Scar tissue different

Question 39

Basal cell carcinoma

Answer 39

75%
Stratum basale overproduce keratinocytes
Rarely spreads
Surgery and chemicals

Question 40

Squamous cell carcinoma

Answer 40

20%
Affects lymph nodes and spreads
Surgery and radiation

Question 41

Malignant melanoma

Answer 41

Most dangerous
5%
Rapid. Death in months
Surgery and immunotherapy

Question 42

Malignant melanoma

Answer 42

Assymetry
Border irreg.
Color
Diameter