histology and physiology of the skin

Question 1

Subcutaneous layer, hypodermis, or superficial fascia

Answer 1

loose connective tissue, also known as adipose tissue; Vessels, nerves, fibers, cells, and fibroblasts are located here; thins with age

Question 2

the dermis

Answer 2

has 2 layers reticular and papillary; fibroblasts and immune cells are found in these layers,derma, known as corium, cutis, or true skin, the support layer of connective tissues above the hypodermis(subcutanueous) and below the epidermis.

Question 3

reticular layer

Answer 3

collagen/elastin, sweat and oil glands, blood and lymph vessels, nerve endings, intercellular fluids

Question 4

papillary layer

Answer 4

touch receptors(sensation), blood vessels, capillaries, dermal papilla,
connects the dermis to the epidermis

Question 5

the epidermis

Answer 5

each of the five layers of the epidermis have keratinocytes, immune cells, and intercellular fluids

Question 6

stratum germinativam

Answer 6

single layer of cells, cell mitosis, stem cells, Merkel cells; keratinocytes, melanocytes, and lipids are all produced here

Question 7

stratum spinosum

Answer 7

largest layer, cell activity, lipids and proteins, desmosomes created, Langerhans(white) immune cells, melanosome pigment distribution

Question 8

stratum granulosum

Answer 8

the moisture barrier-production of keratin granules in cells, additional lipid production and excretion, desmosomes dissolved by enzymes

Question 9

stratum lucidum

Answer 9

clear layer, thickest on the palms and soles, helps grip onto things, cells release lipids, contains clear keratin

Question 10

subcutis tissue

Answer 10

adipose tissue

Question 11

mast cells

Answer 11

located in the dermis, responsible for allergic reactions

Question 12

eumelanin

Answer 12

is dark brown-black, produced by melanocytes, located in stratum germinativum(basal layer)