Chapter 4 Flashcards
What contributes to skin color?
melanin
Carotene
hemoglobin
Which cells produce the fibrous protein, keratin?
Kertinocytes
Mitosis occurs in which layer of the epidermis?
basale
What waterproofing protein is found in the epidermis?
Keratin
Which layer of the epidermis is found only in thick skin?
lucidum
the dermis is composed of which type of tissue?
connective
which vitamin is produced in the dermis
Vitamin D
which layer of the dermis is closest to the epidermis?
papilary
Sudoriferous glands are also known as what?
sweat glands
which lands are only found in the lining of the ear canal
cerumnious glands
“cera” = wax
Eccrine Glands
- connect to pores but not associated with hair
- main fuction is screcting sweat
Types of Sudoriferous glands
Eccrine and Aprocine
Apocrine glands
- become active after puberty
- ducts connect to hair follicles
Five layers of the epidermis from the surface downward
Horny layer Clear layer Granular layer Prickly layer Basal layer
Only fluid tissue of the body
Blood
epidermal call that has a role in immunity and disease resistence
Langerhans
also known as oil glands, ususally in hair follicles
sebaceous glands
arrector pili muscles
attached to the follicle
lift up the hair to create “goose bumps”
functions of the integument system
Protection body temp regulaton cutaneous sensations blood resevoir excretion
first degree burns
epidermal damage only
second degree burns
epidermal and upper dermal damage
third degree burns
entire thickness of skin damaged
what percentage of the body’s blood is in the integumentary system?
5%
tactile (merkel cells)
touch receptors
