Exam 2- Module 4 Flashcards
Skin structure
Epidermis: outer layer
Dermis: inner supportive layer
Beneath these layers is subcutaneous adipose tissue
Epidermal appendages
Formed by tubular invagination of epidermis down into underlying dermis
Sebaceous glands
Sweat glands : eccrine and apocrine
Newborn: lanugo
Fine downy hair
Newborn: vernix caseosa
Thick, cheesy substance
Newborn: sebum
Holding water in skin producing milia
What happens to children epidermis?
Thickens, darkens, becomes lubricated
Adolescent developmental competence
Apocrine gland secretions increase
Fat deposits increase
Secondary sex characteristics
Pregnant: Linea nigra
Increased pigmentation midline of abdomen
Pregnant: chloasma
Discoloration changes of face
“Mask of pregnancy”
Pregnant: striae gravidarum
Stretch marks
Develop over abdomen, breast, thighs
Aging adult: elasticity
Skin folds and sags
Aging adult: sweat and sebaceous glands
Decrease in number and function
Dry skin
Aging adult: senile purpura
Discoloration due to increasing capillary fragility
Aging adult: skin breakdown
Cell replacement is slower and wound healing delayed
Aging adult: hair matrix
Melanocytes decrease
Gray fine hair
Skin pigmentation
Pallor: pale
Jaundice: yellow
Erythema: red
Cyanosis: blue
Color change transient or due to pathology?
Inspecting lesions
Color
Elevation
Pattern or shape
Size
Location
Any exudate: color or odor
Woods light: UV detects fluorescing lesions
Hair inspection
Color- melanin
Texture -hair care products
Distribution
Lesions -divide hair in sections
Inspection nails
Shape and contour: angle nail base 160 degrees
Consistency
Capillary refill 1-2 seconds
*ABCDE skin assessment
A- Asymmetry B- border C- color D- diameter E - elevation and enlargement
Shapes and configurations of lesions
Annular or circular Confluent- all over Discrete- small Grouped Gyrate- looks like worm Target or iris - spot in middle Linear Polycyclic -irregular shape but clustered Zosteriform- radiates to specific area and is grouped
Sternomastoid
Enables head rotation and flexion
Divided neck into two triangles: anterior and posterior
Trapezius muscles
Move shoulders
Extend and turn head
Thyroid gland
Straddles trachea in middle of neck
Synthesizes and secretes T4 and T3 that stimulate cellular metabolism