INTEGUMENTARY SYSTEM Flashcards
(115 cards)
5 functions of integumentary system
1) barrier
2) vitamin d synthesis
3) sensation
4) thermoregulation
5) secretion
3 types of epidermal lipids
1) ceramide - 3
2) cholesterol - 1
3) free fatty acids - 1
a cationic antimicrobial substance which are
an essential component of our innate
immunity
defensin
Contributes to the antimicrobial activity of
the phagocytes of our skin.
defensin
Pigment that produces the color of our skin
which is responsible for protecting the skin
from harmful UV rays.
melanin
This 7 dehydrocholesterol will convert into
____________ when reacted with UV rays.
cholecalciferol
Is known as Vitamin D3.
cholecalciferol
the inactive
form of Vitamin D
Vitamin D3
it has nerve endings like Ruffini’s endings, Pacinian corpuscles,
and Krause’s end bulbs.
Pressure Sensitive
it has nerve endings like Meissner’s corpuscle, Merkel disks and
Root hair plexus.
Fine Touch
it has nerve endings like Free nerve endings.
Temperature and Pain
a function of integumentary system where skin sends signals to the brain (particularly in the hypothalamus) then the brain will send signals to the heart to cause systemic reaction.
thermoregulation
High environmental temperature will lead to
increase in heart rate.
Low environmental temperature will lead to
decrease in heart rate.
this muscle is connected with
blood vessels. Once there is constriction,
the _________ is being pulled. This
results in goosebumps, trapping the warmth
inside our body.
Arrector pili muscle
responsible for secreting sebum and fat. Also protects and
serves as a barrier.
Sebaceous Glands
this gland is important in the role of
electrolyte and water homeostasis. Sweat
balances the electrolyte and water because
it contains salt.
Sweat Glands
what are the 2 main layers in the integumentary system
1) epidermis
2) dermis
This layer is above dermis or above true skin. Outermost layer of the skin.
epidermis
the epidermis is composed of_________
Composed of stratified squamous
epithelium.
is the epidermis avascular?
yes
what is avascular?
without blood supply.
cells that produce melanin
Melanocytes
what are the 5 layers of epidermis
1) stratum corneum
2) stratum lucidum
3) stratum granulosum
4) stratum spinosum
5) stratum basale