Histology of the Skin

Question 1

layers of thick skin, superficial –> deep

Answer 1

stratum corneum
stratum lucidum
stratum granulosum
stratum spinosum
stratum basale

Question 2

layer that actively synthesizes keratin filaments that form tonofibrils

Answer 2

stratum spinosum

Question 3

waterproof barrier of the skin

Answer 3

stratum granulosum

Question 4

intense mitotic activity to replenish keratinocytes

Answer 4

stratum basale

Question 5

layer absent in thin skin

Answer 5

stratum lucidum

Question 6

location of skin APCs

Answer 6

stratum spinosum

Question 7

function of Merkel cells

Answer 7

light touch sensation

Question 8

increases connection between epidermis and dermis

Answer 8

epidermal ridges, dermal papillae

Question 9

layers of the dermis

Answer 9

papillary dermis

reticular dermis

Question 10

layers composing internal root sheath

Answer 10

Henle’s layer (outer)

Huxley’s layer (inner)

Question 11

stratum corneum extending from the proximal nail fold

Answer 11

eponychium (cuticle)

Question 12

mechanoreceptors for touch found in dermal papillae

Answer 12

Meissner’s Corpuscles

Question 13

receptors for sustained touch and vibration

Answer 13

Pacinian corpuscles

Question 14

receptors commonly found in soles of feet

Answer 14

Ruffini’s Corpuscles