Integument Flashcards
hypodermis is _____ _____
superficial fascia
dermis is _____ ______
connective tissue
thick skin is on the ____ and ____
soles of feet and palms of hands
epidermis is keratinized, stratified ________ and is _______. Keratinocytes produce _____ and are dead, melanocytes produce _____ and protect against UV radiation, langerhans are _____ and help with the immune system, merkel cells have sensory ____ endings
squamous avascular keratin melatonin macrophages nerve
merkel cells are at the junction between the ______ and epidermis
dermis
the deepest layer of the epidermis is the _________, which is a single cell layer
stratum basale
stratum basale stem cells become _____ and undergo mitosis (also contains melanocytes)
keratinocytes
there are several cell layers in the stratum _______. Keratinocyte have spines, and there are also ________
spinosum
langerhans
flat keratinocytes are found in the _______ _______, and there are 1-5 layers. They have GRANULES
stratum granulosum .
stratum lucidum is only found in ____ skin. Keratinocytes are DEAD
thick
the outermost layer of the epidermis is the ______ _____. Keratinocyte are dead.
stratum corneum
the dermis is VASCULAR and is made of ______ _____
fibrous CT
fibroblasts, macrophages, mast cells, WBC are found in the _____
dermis
there is a semifluid matrix in the dermis, along with _____, _____, and reticular fibers. Also contains sweat/oil glands, part of hair follicle
collagen and elastic
the two layers of the dermis are the _____ and the _____ layer
papillary and reticular
papillary means nipple)
the papillary layer of the dermis has ______ CT with collagen and elastic fibers. Has nipple-like _____
aerolar
papillae
the reticular layer is the deeper layer of the dermis, and has ____, irregular CT (contrast to aerolar CT of papillary layer)
DENSE
the superficial fascia or subcutaneous tissue is also called the ________. This has areolar and adipose tissue. Stores ____, and anchors skin to underlying muscles.
hypodermis
fat
the skin has 3 barriers:
_______ (melanin)
Physical
________ (langerhans)
chemical
biological
meissners corpuscles are for _____, pacinian are for _____ (looks like an onion)
touch
Pressure
skin BV can hold up to ____% of blood volume!
5
the hair follicle runs from the surface into the _____. The bulb is expanded at the deep muscle. It stands up via the ________ muscle
dermis
arrector pili
sudoriferous glands are _____ glands, except for the _____ and external genitalia
sweat
nipple
modified sweat glands are the __________ glands, which make cerumen, and the mammary glands
ceruminous
sebaceous glands are found everywhere, except for the _____ and soles. They secrete sebum.
palms
