Integumentary system Flashcards
(19 cards)
Skin is the largest body organ:
15-20% of bodyweight
Primary Function:
Protection
insulation
holding organs together
sensory
fluid balance
temperature control
absorbing UV radiation
metabolizing vitamin D
synthesizing epidermal lipids
Epidermis Cells:
Keratinocytes, Melanocytes, Langerhans Cells, Basal Cells
Dermis Cells:
Collagen, Reticulum, Fibroblasts, Macrophages, Lymphatic Glands, Blood
Vessels, Nerve Fibers
Meissner corpuscles
Detect light touch and texture
very fine and light touch
Krause end bulbs
Detect cold temperature
Pacinian corpuscles
(or lamellated)
Detect deep pressure and vibration
Ruffini endings
Detect warmth, stretch, deformation within joints
Free nerve endings
Detect pain, temperature, touch, pressure, tickle and itch
Merkel’s discs
Detect light touch, texture and pressure
crude touch = overall sensation not localized
Hair follicle receptor
touch
Herpes Zoster - Dermatomes
Herpes zoster (shingles) has initial symptoms of pain and paresthesia localized to the affected dermatome
Herpes Zoster - Integumentary
Present as painful rash with clusters of fluid filled vesicles
- Mostly unilateral
- Raised to palpation (< 2 mm height)
- Pink with silvery white appearance
Which cranial nerves are affected?
Herpes Zoster
CN 3 and 5
CN 5 - trigeminal (opthalamic division)
varicella-zoster virus (vzv) reactivates
-> herpes zoster opthalmicus
What precautions to be taken?
Herpes Zoster
airborne and contace
mask
gown
gloves
very contagious
Herpes simplex virus type 1
cold sores
above waistline
around mucus membranes
Herpes simplex virus type 2
below waistline
genitals
Venous insufficiency:
Refers to inadequate drainage of venous blood from a body part,
usually resulting in edema and/or skin abnormalities and
ulcerations
going up
don’t bring blood to heart -> edema
Arterial insufficiency:
Refers to a lack of adequate blood flow to a region of the body
blood not going to distal parts
