nail and hair anatomy

Question 1

stratum corneum

Answer 1

multiple layers of dead keratinocytes
dandruff being sloughed off
contains dead squamous shaped cells

Question 2

stratum lucidum

Answer 2

layer is only found in thick skin
appears as a glassy layer in think skin only

Question 3

stratum granulosum

Answer 3

a lot of keratin fibers, organelles disenegrate, cells die

Question 4

stratum spinosum

Answer 4

keratinocytes are bound together by desmosomes
thorn-like projections

Question 5

stratum basale

Answer 5

deepest basale layer
attachment to basement membrane
contains basale cells(stem cells), melanocytes, and tactile cells(merkel cells)
-basale cell carcinoma
-malignant melanoma
most rapid cell division occurs

Question 6

C’mon Lets Get a Sun Burn

Answer 6

corneum
lucidum
granulosum
spinosum
basale

Question 7

Dermis
-papilary layer
-reticular layer

Answer 7

papillary layer- areolar tissue
capillaries, lymphatics, nerves

reticular layer- irregular connective tissue
lots of collagen, elastic fibers,

meissner corpuscules- receptors

Question 8

practice of using fingerprints

Answer 8

dactyloscopy

Question 9

eccrine

Answer 9

found on most areas, sweat

Question 10

apocrine

Answer 10

found on axilla, genital area, pigmented area around nipples

Question 11

sebaceous gland

Answer 11

found surrounding hair follicles and deposit sebum which lubricates skin

Question 12

macrophage

Answer 12

phagocytize invading cells and process and present antigens

Question 13

Langerhans

Answer 13

process and present antigens to alert immune system