Science - Integumentary system Flashcards
what are the functions of the integumentary system
Protection (against pathogens), Secretion: sebacious, sweat glands, Thermoregulation, remove waste, communication, vitamin D production
what do sebacious glands secrete?
Sebum
what does sebum help with
waterproofing skin
how does communication occur in the skin
Sensory receptors –> send info to brain
what do sensory receptors communicate to brain
Pain, Touch, Pressure, Temperature
what is the pneumonic to remember what sensory receptors communicate
Pretty Please Tell Tanya
what does vitamin D help with
absorption of calcium, magnesium, phosphate
what is the pneumonic to remember Vitamin D absorption
Come Play Minecraft
What does the epidermis contain
epithelial cells (no blood), stratum basale –> deepest part of Epidermis (constantly dividing), KERATIN –> protein that helps WATERPROOF skin
What does the dermis contain
Blood vessels, sensory receptors, hair follicles, sebacious glands, sweat glands
what is the pneumonic to remember what the dermis contains
Bring Very Small Radios So Gleen Stops Getting Happy Faces
True False: the subcutaneous layer is a part of the skin
False: it is not a layer of skin
What is the most common type of cell found in the integumentary system
Keratinocytes
where are keratinocytes located
epidermis
Where do keratinocytes come from
stratum basale
what do keratinocytes produce
keratin –> protein that hardens cells, water resistance of skin
what do melanocytes produce
melanin –> gives skin color, protects against UV rays
where are melanocytes located
Epidermis
what do langerhans cells do
antigen presenting cell of immune system
what is the location and specific layer are langerhans cells located
Located in the epidermis –> specifically stratum spinosum
What is the function of merkel cells
detect LIGHT touches
what type of receptors are merkel cells
cutaneous receptors
where are merkel cells located, what specific layer
epidermis –> stratum basale
where are fibroblasts located
dermis
