integumentary system Flashcards
Benign
tumors don’t metastasize or spread
dermal papillae
forms fingerprints in utero at 10 weeks
keratinocyte
keratin cell, providing strength
malignant
tumors that metastasize and spread
melanocyte
melanin cell, providing pigmentation
pericardium
lines the heart
peritoneum
lines abdominal cavity and covers organs
pleura
lines lungs
3 types of epithelial membranes
cutaneous (skin)
mucous (mucosa)
serous (serosa)
dry membrane containing stratified squamous and dense connective tissue
cutaneous
membrane that lines cavities closed to the outside world and contains parietal and visceral layers to make up the pericardium
serous membrane
membrane that has no epithelial tissue and lines the joints
synovial
membrane that contains various epithelial tissues, lamina propria and lines cavities opened to outside world
mucous
what tissues make the three main skin layers
epidermis-stratified
dermis-dense
hypodermis-adipose
what are the functions of the integumentary system
protects, insulates, cushions, synthesizes vitamin D
list the 5 strata of the epidermis in order
basale
spinosum
granulosum
lucidum
corneum
in which of the 5 strata does mitosis occur
basale
what does the sebaceous gland secrete
sebum
what does the sudoriferous secrete
sweat
the 3 layers making up the hair
medulla, cortex, cuticle
the blood vessels in the dermis do what?
provide oxygen
regulate temperature
provide nutrients
what does the meisseners corpuscle sense
touch
what does the pacinian corpuscle nerve sense
pressure
the arrector pilus is composed of what type of muscle tissue
smooth muscle
List 3 functions of the hypodermis
anchors skin to organs, shock absorbers, insulates
define 3 types of burns
1 degree- destroys epidermis
2 degree- destroys epidermis and upper dermis
3 degree- destroys all layers of
define 3 types of skin cancer
basal - over production of cells in stratum basale
squamous - over production of cells in statum spinosum
malignant melanoma - chemical and uv
