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Histology
Epithelia
77
Histology
Graduate
10/25/2012

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Cards

Term
A layer or group of cells that collectively perform a specific function is a ___________.
Definition
tissue
Term

True or False:

The epithelium contains blood vessels.

Definition
False
Term
The function of epithelium in the skin is _________.
Definition
protection
Term
The function of epithelium in glands is ________.
Definition
secretion
Term
The function of epithelium in the intestines is ___________.
Definition
absorption
Term
The function of epithelium in the kidneys is ________.
Definition
excretion
Term
The function of epithelium in the trachea is ____________.
Definition
transportation
Term
The function of the epithelium in the retina is _______.
Definition
sensation
Term
What are the 4 types of epithelia?
Definition

1. Simple

2. Simple Pseudo-stratified

3. Stratified

4. Transitional

Term
What is the bottom side of an epithelial cell called?
Definition
basal
Term
What is the top surface of an epithelial cell called?
Definition
apical
Term

True or False:

The epithelia has blood vessels.

Definition
False
Term
Which surface of an epithelial cell attaches to the basement membrane?
Definition
basal
Term
________ epithelium contains a single layer of cells.
Definition
Simple
Term
__________ cells are flat.
Definition
Squamous
Term
The ___________ lines the body cavity.
Definition
mesothelium
Term
The __________ lines the blood vessels.
Definition
endothelium
Term
__________ cells are cube-shaped.
Definition
Cuboidal
Term
Small ducts or tubules that function for absorption or secretion are lined with _________ epithelium comprised of _________ cells.
Definition
simple, cuboidal
Term
The nuclei of _______ cells are always at the center of the cells.
Definition
cuboidal
Term
_________ cells usually have microvilli or cilia.
Definition
Columnar
Term
Brush borders function in _________.
Definition
absorption
Term
The microvilli that line the intestinal wall are collectively known as the ____________.
Definition
brush border
Term
In _____________ epithelium, all cells touch the basement membrane, but not all cells reach the free surface.
Definition
pseudo-stratified
Term
In pseudostratified epithelium, _______ cells have the ability to divide and proliferate.
Definition
basal
Term
In pseudo-stratified epithelium, the cells that do not reach the free surface are known as _________ cells.
Definition
basal
Term
_________ epithelium has 2 or more layers.
Definition
Stratified
Term
Stratified epithelium is classified by the ___________.
Definition
top layer
Term
Stratified squamous epithelium is found in the ______.
Definition
skin
Term
Stratified squamous epithelium of the esophagus is ________.
Definition
non-keratinized
Term
Stratified squamous epithelium of the skin is ________.
Definition
keratinized
Term
Stratified squamous epithelium has _____ cells on the top layer.
Definition
flat
Term
Stratified cuboidal or columnar epithelium nearly always has how many cell layers?
Definition
2
Term
Stratified cuboidal or columnar epithelium is found in _________________.
Definition
larger excretory ducts of glands (salivary)
Term
Transitional epithelium is only found in the _______________.
Definition
urinary tract
Term
In ___________ epithelium, the top layer of cells may vary in shape.
Definition
transitional
Term
Cells in _________ epithelium can stretch and morph.
Definition
transitional
Term
The basement membrane is made up of _____ collagen, other proteins, and carbohydrates.
Definition
Type IV
Term
The ___________ serves as a scaffold and filtration barrier.
Definition
basement membrane
Term

True or False:

The basement membrane can be seen with PAS stain.

Definition
True
Term
____________ attach the plasma membrane to the basement membrane.
Definition
Hemidesmosomes
Term
With hemidesmosomes, _________ extend into the cytoplasm.
Definition
intermediate filaments
Term
_____________ connect cells with the space between the cells being very, very small.
Definition
Tight junctions
Term
Another name for Adherens junction is ______________.
Definition
zonula adherens
Term
A type of cellular junction that can be described as a spot weld is a ___________.
Definition
desmosome
Term
Actin filaments that help support microvilli structure are known as the ___________.
Definition
terminal web
Term
The terminal web is made of _________.
Definition
actin filaments
Term
The terminal web is found in _________.
Definition
intestinal epithelium cells
Term
_________ allow intercellular exchange of ions and other molecules.
Definition
Gap junctions
Term
____________ allow the transmission of electrical impulses among cells.
Definition
Gap junctions
Term
Gap junctions are made of __________.
Definition
connexons
Term
_________ form a brush border.
Definition
Microvilli
Term
A __________ is a thick layer of sugar that coats the outer surface of microvilli.
Definition
glycocalyx
Term
The cores of microvilli are made of ________ filaments.
Definition
actin
Term
______ are found in the trachea and help to move mucus up and out of our airway.
Definition
Cilia
Term
Cilia are supported by __________.
Definition
basal bodies
Term
Centrosomes always have a ______ configuration of ___________.
Definition
9+2, microtubules
Term
Endocrine glands secrete hormones into the _________.
Definition
blood
Term
Exocrine glands secrete substances into a ______________ or onto a surface.
Definition
lumen/duct
Term
Glands are classified by the number of ________.
Definition
cells
Term
A group of secretory cells is known as an ________.
Definition
acinus
Term
____________ cells cover the acini and contract to expel secretions.
Definition
Myoepithelial
Term
The __________ is the functional unit of a gland.
Definition
adenomere
Term
What are the 3 modes of secretion?
Definition

1. Merocrine

2. Apocrine

3. Holocrine

Term
_________ secretion releases by the exocytosis of granules.
Definition
Merocrine
Term
_________ secretion releases apical cytoplasm.
Definition
Apocrine
Term
__________ secretion releases the whole cell after it dies.
Definition
Holocrine
Term

True or False:

Secretion occurs constantly in exocrine glands.

Definition
True
Term

True or False:

Secretion occurs constantly in endocrine glands.

Definition
False
Term
Salivary glands, gastric glands, and sweat glands use __________ secretion.
Definition
merocrine
Term
After this type of glandular secretion, the shape of the cell is changed.
Definition
apocrine
Term
The composition of _________ secretion is watery, proteinaceous, and often contains enzymes.
Definition
serous
Term
Serous secretion can be visualized using _________ staining.
Definition
eosin
Term
_________ is a viscous solution of glycoproteins and polysaccharides.
Definition
Mucous
Term
Mucous contains a lot of __________ and can be visualized using _______ staining.
Definition
sugar, PAS
Term
Mixed glandular secretion is a combination of _______ and _______ secretions.
Definition
serous, mucous
Term
Milk, sebum, and cerumen are examples of ________ secretion.
Definition
lipid
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