Skin Layers
Most deep layer of the epidermis
stratum basal layer
Points where print ridges come together or end; they are considered to be the “uniqueness” of an individual
minutiae
Common name is SWEAT GLANDS
Play a major role in body temperature regulation
Sudoriferous Glands
5 parts of the integumentary system
Hair, Skin, Nails, Oil Glands, and Sweat Glands
Wound with JAGGED edges produced by the TEARING of soft body tissue.
Affect the dermis
Laceration
Most superficial layer of the epidermis
stratum corneum
Fingerprint slopes toward the thumb
radial loop
Sweat glands are located EVERYWHERE on your body but are most numerous on face, hands, feet, in armpits and groin.
Eccrine
4 functions of the integumentary system
1. PROTECTION
2. BODY TEMPERATURE REGULATION
3. SENSE OF TOUCH
4. PRODUCTION of VITAMIN D
Degree of burn where skin appears charred & blackened, underneath is white, usually PAINLESS due to extensive nerve damage, Definite scarring
Third degree
The epidermis is made of 2 main cell types
Keratinocytes & Melanocytes
visible prints, are left on a smooth surface when blood, ink, paint, grease, or some other liquid comes in contact with the hands and is then transferred to that surface
patent fingerprints
sweat glands are found attached to the hair follicles only in the armpit and groin regions and (may) emit chemicals called PHEROMONES
Accrine
epi means?
List what the ABCDE rule stands for.
A: ASYMMETRY (both sides are NOT alike)
B: BORDERS (bumpy, not smooth)
C: COLOR- (changes, or more than one color)
D: DIAMETER (larger than a pencil eraser)
E: EVOLVING (changes over time)
Layer that causes fingerprints (be specific)
papillary layer of dermis
A loop with a whorl at the end, which can be oval, spiral, or circular with two deltas
central pocket
is the DERMIS underneath the body of the nail where the blood vessels and nerves are located
Nail Bed
What layer contains no blood vessels
epidermis
Stage of healing where:
Blood supply temporarily increases which can cause discoloration
Rapid mitosis in stratum basale of epidermis helps heal the epidermis
Dermis is filled with excessive collagen fibers and forms scar tissue
Stage 2
The dermis is made of 2 main connective fibers that hold it together
Collagen & Elastic Fibers
The ridges enter the print on one side and flow out the other, with a rise or wave in the middle.
Plain arch
Found all over the body except on PALMS & SOLES These glands are usually connected directly to a HAIR follicle.
Sebaceous Glands
Layer of the epidermis that is only found in the palms of the hand and the soles of the feet.
stratum lucidum
Name two things that happen with ageing and explain why.
Grey/White Hair- melanocytes in hair root stop
injecting melanin into hair cells
Dry skin/hair-Sebaceous glands produce
less sebum
Body temp regulation- Sudoriferous gland activity
declines, Reduced blood flow in
dermis
slower healing
prone to injuries
wrinkles
slower healing