Skin

Question 1

what is panniculitis?

Answer 1

inflamm of subcutaneous tissue

Question 2

what is adnexal?

Answer 2

sweat glands, hair, sebaceous glands

Question 3

where are sweat glands in the skin?

Answer 3

dermis and hypodermis

Question 4

where are hair follicle in the skin?

Answer 4

dermis and hypodermis

Question 5

5 layers of epidermis?

Answer 5

Stratum: Basale
Spinosum
granulosum
lucidum
corneum

Question 6

what does the stratum spinosum look like ihstologically?

Answer 6

intercelullar bridges with desmosomal junctions

Question 7

why is dermo-epidermal junction tortuous?

Answer 7

increase surface area to minimize sloughing of epidermis during shear forces

Question 8

what is dermal papilla

Answer 8

outcropping of dermis into epidermis

Question 9

main cells in the epidermis?

Answer 9

keratinocytes

Question 10

what is epidermal rete ridge?

Answer 10

outcropping of epidermis into dermis

Question 11

what attaches from keratinocyte to basement membrane?

Answer 11

hemi-desmosome

Question 12

how long for a basal cell epidermal life cycle?

Answer 12

60 days

Question 13

ratio of melanocytes to keratinocytes

Answer 13

1:10

Question 14

melanocyte structure? where is it?

Answer 14

between basal cells

large cytoplasmic processes extend up between keratinocytes

Question 15

purpose of melanocytes?

Answer 15

make melanin to protect keratinocytes’ nuclei against UV

Question 16

3 things determine skin colour

Answer 16

genetics
sun exposure
blood flow

Question 17

what are Langerhans cells of the epidermis?

Answer 17

antigen presenting cells active in contact dermatitis and other neoplastic lesions

Question 18

what kind of cells are Merkel Cells ?

Answer 18

neuro-endocrine cells

active in touch

Question 19

what are the 2 main layers of dermis? collagen?

Answer 19

1. Papillary - fine collagen with elastic

2. reticular - coarse collagen

Question 20

what do papillary and reticular dermis both contain?

Answer 20

macrophages APCs

Question 21

what surrounds sweat glands?

Answer 21

myoepithelial cells to contract

Question 22

muscles around hair called?

Answer 22

erector pili

Question 23

sebaceous glands empty into?

Answer 23

hair follicles

Question 24

what kind of sweat glands in armpits?

Answer 24

apocrine sweat glands

Question 25

how to temp regulate in skin?

Answer 25

change the arteriovenous anatomosis levels

Question 26

where are the free nerve endings in skin?

Answer 26

epidermis

Question 27

what kid of skin in hands and feet?

Answer 27

thick skin glaberous | more keratin, no hair follicles, yes sweat glands

Question 28

wound a few weeks old has?

Answer 28

granulation tissue

Question 29

healing by primary intention?

Answer 29

less scar less granulation tissue ends closer together

Question 30

healing by secondary intention? time? susceptibility?

Answer 30

takes longer | susceptible to infection and dehydration

Question 31

3 phases of healing?

Answer 31

inflamm proliferation maturation

Question 32

superficial burns affects?

Answer 32

epidermis only

Question 33

partial thikness affects?

Answer 33

epidermis + dermis varying

Question 34

full thickness burn affects?

Answer 34

full epidermis, dermis and variable subutaneous

Question 35

surgical incisions should be made where?

Answer 35

along cleavage lines to minimize scarring

Question 36

keloid scar is?

Answer 36

excessive collagen formation