Skin physiology

Question 1

the three skin layers

Answer 1

epidermis
dermis
hypodermis

Question 2

functions of the skin

Answer 2

protection of the underlying organs
produces melanin that protects against UV
lipid and fat storage in the adipocytes
synthesis of the steroid a hormone that is important for calcium metabolism
temperature regulation
excretion of the unwanted substances through the glands
produces keratin for water repellent

Question 3

epidermis

Answer 3

the protective barrier, no blood circulation and has mostly the keratinocytes

Question 4

dermis

Answer 4

has blood circulation and contains collagen and elastin that is used for strength

Question 5

hypodermis

Answer 5

has the adipose tissues for the storage of the fats

Question 6

cutaneous

Answer 6

consist of dermis and epidermis because they have some skin in them

Question 7

subcutaneous

Answer 7

only has the hypodermis because it is under the skin

Question 8

epidermis

Answer 8

has a thin and thick layer

Question 9

thin layer

Answer 9

stratum corneum
stratum granulosum
stratum spinosum
stratum basal

Question 10

thick layer

Answer 10

stratum corneum
stratum lucidum
stratum granulosum
stratum spinosum
stratum basal

Question 11

stratum corneum

Answer 11

has the dead cells without nuclei

Question 12

stratum granulosum

Answer 12

dehydrates the cells before going into the stratum corneum and some waxy material is secreted into the spaces between the stratum

Question 13

stratum spinosum

Answer 13

has some desmosome bridges that links the cells together

Question 14

stratum basal

Answer 14

makes more epidermis cells as the basal layers are divided into daughter cells

Question 15

stratum lucidum

Answer 15

increases surface area and this is mostly for soles of feet and the palms

Question 16

dermis

Answer 16

divided into two layers that are papillary and reticular layers

Question 17

papillary layer

Answer 17

this is mostly for nourishment

Question 18

reticular layer

Answer 18

this contains the strings of collagen and elastin and is mostly for strength

Question 19

the dermis plexus

Answer 19

cutaneous plexus
subpapillary plexus

Question 20

cutaneous plexus

Answer 20

a network of blood vessels that is at the junction of the dermis and hypodermis that provides blood to the hypodermis

Question 21

subpapillary plexus

Answer 21

a network of blood vessels that carry oxygen and nutrients to the upper dermis and epidermis

Question 22

accessory structures

Answer 22

hair, nails, sweat glands, receptors