Shared Flashcard Set

Details

Histology Exam 1 - Epithelia
Epithelia
69
Histology
Professional
09/20/2011

Additional Histology Flashcards

 


 

Cards

Term
location of epithelia
Definition
lines any hollow tubular structure
Term
basement membrane layers
Definition
L. lucida, L. densa, and L. fibroreticularis (reticular lamina)
Term
Lamina densa
Definition
basal lamina
Term
basement membrane proteins
Definition
laminin, entactin, and fibronectin
Term
basement membrane function
Definition
seperates all CT from non-CT
Term
tight junctions
Definition
prevent movement of macromolecules between cells; selectively permeable
Term
adhering junctions
Definition
desmosomes and hemidesmosomes
Term
desmosomes
Definition
connections between cells
Term
hemidesmosomes
Definition
cell to non-cell junctions
Term
gap junctions
Definition
tubular channels between adjacent cells; allow ion and small molecule diffusion
Term
endothelium
Definition
simple squamous epithelium lining cardiovascular system
Term
mesothelium
Definition
simple squamous epithelium lining body cavities and organs
Term
capillary
Definition
single endothelial cell
Term
tunica serosa
Definition
mesothelium and underlying layers
Term
simple squamous epithelium
Definition
location: blood and lymph vessels/heart, body cavities and organs, lung alveoli, and kidney tubules
Term
diffusion
Definition
function of simple squamous epithelium
Term
simple cuboidal epithelium
Definition
location: glands and some ducts, surface of ovary, lens of eye, and some kidney tubules
Term
secretion and absorption
Definition
function of simple cuboidal epithelium
Term
simple columnar epithelium
Definition
location: stomach and intestines, gall bladder, uterus, oviducts, and glands
Term
secretion and absorption
Definition
function of simple columnar epithelium
Term
pseudostratified columnar epithelium
Definition
location: upper respiratory system, epididymis, ductus deferens
Term
features of psuedostratified columnar epithelium
Definition
goblet cells and cilia
Term
secretion, protection, and movement
Definition
function of psuedostratified ciliated columnar epithelium
Term
translational epithelium
Definition
looks like stratified cuboidal epithelium
Term
urinary system
Definition
location of translational epithelium
Term
expansion
Definition
function of translational epithelium
Term
nonkeratinized stratified squamous epithelium
Definition
location: oral cavity, esophagus, parts of the stomach, vagina (not during estrous)
Term
keratinized stratified squamous epithelium
Definition
location: epidermis, upper GI system, and vagina during estrus
Term
protection
Definition
functoin of keratinized and nonkeratinized stratified squamous epithelium
Term
exocrine glands
Definition
empty onto surface via excretory duct
Term
adenomeres
Definition
secretory endpieces of exocrine glands
Term
goblet cell
Definition
unicellular gland that secretes mucous
Term
striation
Definition
increases surface area for secretion in glands
Term
merocrine glands
Definition
apparent method of secretion is exocytosis; digital pads
Term
apocrine glands
Definition
apparant method of secretion is "heads" being pinched off (still exocytosis)
Term
holocrine glands
Definition
apparent method of secretion is entire cell sloughing off; pouch shaped
Term
sebacious gland
Definition
holocrine gland that secretes sebum
Term
excretory ducts
Definition
carry secretory product
Term
secretory ducts
Definition
add to secretory product
Term
mucous, serous, sebacious, and mixed
Definition
classification of glands based on secretory product
Term
myoepithelial cells
Definition
contractile cells that wrap around adenomere and force secretory product out
Term
layers of skin
Definition
stratum corneum, stratum granulosum, stratum spinosum, and stratum basale
Term
keratinocytes
Definition
found in all layers of the epidermis; produce keratin
Term
stratum basale
Definition
epidermal layer capable of regeneration and division
Term
stratum spinosum
Definition
thickest layer of epidermis
Term
stratum granulosum
Definition
layer of epidermis that is only usually a few cells thick
Term
layers of skin
Definition
epidermis, dermis, and hypodermis
Term
epidermis
Definition
outer layer of epidermis, composed of keratinized stratified squamous epithelial cells
Term
hypodermis
Definition
deepest layer of epidermis, composed of loose CT; location of SQ injections
Term
cathepsin G
Definition
protein that elicits itch
Term
pigment cells
Definition
melanocytes and melanophages
Term
tyrosinase
Definition
enzyme that converts tyrosine to melanin
Term
merkel cells
Definition
cells found among keratinocytes; in stratum basale; sensory
Term
langerhans cells
Definition
cells found among keratinocytes; immunologic; contact hypersensitivity
Term
epidermal cell renewal time
Definition
canine - 22 days
Term
skin permeable to...
Definition
CO2 out, toxins, lipid-soluble chemicals
Term
factors that increase absorption
Definition
increased moisture, temperature, concentration; damaging skin; removing sebum
Term
hair cycle
Definition
anagen, catagen, telogen
Term
anagen
Definition
period of hair growth
Term
catagen
Definition
period in which hair growth stops
Term
telogen
Definition
long rest period of hair growth; follicle atrophy
Term
functions of skin
Definition
immunological; temperature control; sensory perception; BP control; secretion; vitamin D synthesis
Term
activation of vitamin D
Definition
sebaceous glands and UV light
Term
corium
Definition
dermis of hoof; sensitive connective tissue; stains lighter than insensitive portion
Term
stratum lamallatum
Definition
interdigitations of laminar dermis (corium) and stratum medium
Term
stratum medium
Definition
insensitive portion of hoof (wall); stains eosinophilis; contains tubular and intertubular horns
Term
wall epidermis
Definition
canine claw plate
Term
dorsal ridge
Definition
coronary epidermis of canine claw
Term
periople region
Definition
region of growth in hoof and claw
Supporting users have an ad free experience!