Studied by 2 people
histology
The study of tissues.
tissue
A group of cells and their products working together for a particular function.
triploblastic
Vertebrates are ____________ meaning that they come from three basic types of tissues
endoderm, mesoderm, ectoderm
The three different cell types of an embryo that give rise to all tissues.
epithelial tissue
Tissue that covers things. Covers body surfaces, lines body cavities and ducts, form glands, and secrete products like hormones.
tight junctions, desmosomes, gap junctions
Epithelial tissue cells are tightly packed with very little extracellular space. All epithelial tissue cells have specialized cell to cell contacts. What are the three types of contacts/junctions?
tight junction
Specialized cell to cell contact in epithelial tissues that stops things from passing through. Think of proteins that sew the cells together.
desmosome
Specialized cell to cell contact in epithelial tissues that acts like a button and holds the cells together.
gap junction
Specialized cell to cell contact in epithelial tissues that holds the cells together but also allows some materials to flow from cell to cell.
apical, basal
All epithelial tissues have a top/_____ surface and bottom/_____ surface. = All epithelial tissues exhibit polarity.
avascular
Term that means no blood supply.
endoderm
Tissue that gives rise to digestive and respiratory tracts.
mesoderm
Tissue that gives rise to dermal bone, muscle, vertebrae, blood, and notochord.
ectoderm
Tissue that gives rise to nervous system, epidermis, and neural crest cells.
basement membrane
The point of attachment for basal tissue and connective tissue?
basal, reticular
The basement membrane is connected to the connective tissue by what two lamina?
The lamina are non cellular!
epithelium
What produces the basal lamina?
connective tissue
What produces the reticular lamina?
nutrients
Epithelial tissues get their _________ from blood vessels in the connective tissue that is beneath them.
simple
What arrangement of cells would you find in an area with not much wear and tear that also needs to perform lots of diffusion?
ex: lungs
stratified
What arrangement of cells would you find in an area with high wear and tear?
ex: tongue
secretion/absorption
Simple cell arrangements are useful for?
ex: lungs, digestive tract
secretion/propulsion
Pseudostratified cell arrangements are useful for?
ex: trachea (coughs something up)
protection
Stratified cell arrangements are useful for?
ex: skin, tongue
desiccation
The removal of moisture from something.
keratinized
When cells have died and hardened. This is good for preventing desiccation.
secretion
Stratified cuboidal cell arrangements are used for?
Cuboidal cells in general are usually used for this.
ex: ducts of large glands. sweat/saliva
urothelium (transitional)
Epithelial tissue with the main purpose of stretching.
ex: uterus, bladder, urethra
epithelial tissue
Where do most of our glands come from?
gland
A cell, tissue, or organ that makes or secretes a product.
endocrine
___________ glands produce hormones and secrete them into the bloodstream via exocytosis.
exocrine
________ glands secrete products onto body surfaces or into body cavities.
cuboidal
Glands are usually made of _________ or columnar cells.
ductless
Endocrine glands secrete directly into the blood and are therefore ____________.
ducts
Exocrine glands have _______ that they secrete their products into. The products then move from their to the surface.
ex: sweat, mammary, saliva, sebaceous
unicellular
Mucous glands and goblet cells are __________. They consist of only one cell and produce mucin that dissolves in water to create mucus. They secrete their products by exocytosis.
holocrine
Type of gland that disperses its product when the whole membrane ruptures.
ex: sebaceous/pimple
apocrine
Type of gland that disperses its product with budding vesicles.
ex: mammary gland milk lipids
merocrine
Type of product that secretes its product by exocytosis as the product is produced.
ex: non fat mammary gland products
Note 
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