Integumentary Flashcards
What are the primary functions of skin?
- protection
- water barrier
- UV light barrier
- Sensory receptor
- Thermal regulation
- Vitamin D Synthesis
What is skin?
Largest organ of the body
Roughly what percent of body weight is skin?
Fifteen percent
How many layers of skin are there and what are they?
Three: Epidermis, Dermis, Hypodermis
How many layers of Epidermis are there and what are they?
Stratum Corneum, Stratum Lucidum, Stratum Granulosum, Stratum Spinosum, Stratum Basale
What is the Stratum Corneum?
The top layer of the epidermis, made of dead cells.
What is the Stratum Lucidum?
Found only in very thick skin between the corneum and the granulosum, made of dead cells being pushed up.
What is the Stratum Granulosum?
Last layer of living cells being pushed to the top of the epidermis, located between the Lucidum(in thick skin) or Corneum and the Spinosum
What is the Stratum Spinosum?
Layer of living/thriving new cells in between the stratum granulosum and stratum basale.
What is the Stratum Basale?
The base layer of the Epidermis bordering the Dermis, single layer of new cells on the basement membrane undergoing mitosis. Merkel discs and melanocytes reside here.
What is a Merkel Disc?
The tactile cell in the stratum basale of the epidermis that senses pressure.
What is a melanocyte?
A Melanin cell that provides yellow/brown pigment
What is a keritinocyte?
the water proofing cell, provides yellow pigment
What is hemoglobin?
The red pigment molecule in red blood cells
aden/o
gland
adip/o
fat/lipid
steat/o
fat/lipid
lip/o
fat/lipid
crypt/o
hidden
cutane/o
skin
derm/o
skin
dermat/o
skin
hidr/o
sweat
icthy/o
dry/scaly
kerat/o
horny skin/hard/cornea
myc/o
fungus
onychh/o
nail
ungu/o
nail
pil/o
hair
trich/o
hair
scler/o
hardening
xer/o
dry
How many burn classifications are there and what are they?
Three: First degree, Second degree, and third degree
What is the rule of nines used for?
Determining how critical a burn is.
A burn is considered critical by the second degree in the rule of nines…
When over 25% of the body has 2nd degree burns