ch 5 book

Question 1

keratin

Answer 1

protein that makes up hair, nails, and stratum or epidermis

Question 2

skin functions

Answer 2

protection, water retention, vit d synthesis, excrete stuff, regulate temp, feel sensation, nonverbal comm

Question 3

thermorecptors

Answer 3

neuron specialized for het/cold
found in mucous membrane

Question 4

epidermis

Answer 4

keratinized stratified squamous epithelium

Question 5

keratinocytes

Answer 5

majority of cells
synthesizes keratin

Question 6

stem cells

Answer 6

undifferentiated cells,
produce keratinocytes
found in stratum basale

Question 7

melanocytes

Answer 7

in stratum basale
make melanin
branching and shed melanosomes from tips

Question 8

tactile cells

Answer 8

touch receptor
few
found in basal layer of epidermis and dermal

Question 9

tactile cell and nerve fiber called

Answer 9

tactile disc

Question 10

dendritic cells

Answer 10

in straum spinosum and stratum granulosum
immune cells form bone marrow

Question 11

stratum basale epithelium

Answer 11

simple cuboidal to comlumar keratinocytes

Question 12

stratum spinosum

Answer 12

is several layers of keratinocytes, thick asf,

Question 13

stratum granulosum

Answer 13

3-5 layers of flat keratinocytes and some entropic cells

Question 14

stratum lucidium

Answer 14

thin, transparent only in thick skin
keratinocytes packed with eleidin

Question 15

stratum corneum

Answer 15

30 layers of dead, keratinize cells
durable and resistant

Question 16

stratum granulosum 4 important developments

Answer 16

1. keratohylan granules release filaggrin
2. cells make though layer of envelope proteins beneath plasma membrane
3. lamellar granules release water proof lipid mix
4. cells die, leaving water proof sac

Question 17

gave up after 5.1c

Answer 17

lol

Question 18

dermis

Answer 18

blower epidermis,
connective
made of collagen, elastic and reticular, fibroblast