10/2 Class Lecture Chapter 5 Flashcards
skin functions
protection body temperature regulation cutaneous sensation metabolic fucntions blood/water resevoir excretion
cutaneous sensations
pain, pressure, temperature
example of metabolic functions for skin
we make vitamin D in our skin
examples of secretion for skin
nitrogen waste mixed with our skin
another word for skin
integument
what is the largest body organ
skin
what are the two regions of the skin
dermis and epidermis
where is the epidermis
the superficial region, on top of the dermis
what tissue makes up the epidermis
epithelial tissue
where is the dermis
underlies epidermis
what tissue makes up demis
mostly fibrous connective tissue
what is the hypodermis also called
superficial fascia
what is the hypodermis
connective tissue below the dermis
subcutaneous layer deep to the skin
mostly adipose tissue that absorbs shock and insulates
anchors skin to the underlying structure- mostly muscles
is the hypodermis apart of the skin
no, but it shares some functions
who has more hair follicles male or females
both have same number
what is keratin
protein that kills cells and makes them waterproof
what makes up the epidermis
keratinized stratified squamous epithelium
what are the layers of the epidermis from bottom to top
Stratum basale Stratum spinosum Stratum granulosum Stratum lucidum (only in thick skin) Stratum corneum
what are the cell types of the epidermis
keratinocytes
melanocytes
dendritic (Langerhans) cells
tactile (merkel) cell
what do melanocytes contain
the pigment melanin
what are the structures for dendritic cells
root like structures
what do tactile (merkel) cells deal with
our immune system and fighting off bacteria
what type of fibers do keratinocytes produce
fibrous protein keratin
what cells make up most of the epidermis
keratinocytes