Epithelial Tissue Flashcards

Terms Definitions
Simple Squamous ET
Capillary
Stratified Columnar ET
Salivary gland
PCCE Pseudostratified Ciliated Columnar ET
Bronchioles
Where is Stratified Squamous located?
Keratinized: SkinNon-keratinized: Mouth, toungem esophagus, anus, and vagina.
What is the function of Simple Columnar Epithelial Tissue?
Secretion and absorption.
What is the function of the Stratified Columnar Epithelial Tissue?
Secretion and protection.
Where is Pseudostratified located?
Lines much of the lowers respiratory system, down to bronchiolar level. Nonciliated form may be found in some gland ducts, epididymis, and part of male urethra.
Simple Columnar ET - Ciliated, Non
Ciliated - Fallopian Tube
Non - Lining of gut
Where is Simple Squamous located?
Lining of heart and blood vessles, lymphatic vessles, alveoli of lungs, glomerular capsule of kidneys, part of serous membrane.
What is the shape of Pseudostratified Epithelial Tissue?
Psuedostratified have cells that contact with the basement membrane, but do not reach the apical surface.
Stratified Squamous ET - Keratinized, Non
Keratinized - Epidermis of skin
Non - Mouth
Where is Simple Columnar located?
Lines GI tract of stomach to anal canal, ducts of some glands, and gallbladder. Ciliated forms lines oviducts, uterus, and central canal of spinal cord.
What is the function of the Transitional Epithelial Tissue?
Allows destination of organ without causing an increase tension in wall of organ.
What is the shape of a Stratified Columnar Epithelial Tissue?
Column shaped cells in multipe layers.
anus
protection
simple columnar epithelium
photo here
cilium
Numerous, short, hair-like projections that extend from the surface of the cell. Each cilium contains a core of microtubules surrounded by plasma membrane. (79)
limited protection, secretion, absorption
stratified cuboidal
Simple Squamous(4)
.fit closely together.forms membranes where filtration of substances by rapid diffusion occurs.found in air sacs of lungs
mucus
The thick fluid secretion of goblet cells, mucous cells, mucous glands, and mucous membranes. (G-25)
acinus
Massive cells in the pancreas that secrete digestive enzymes. (G-2)
mesothelium
(meso = middle); The type of simple squamous epithelium that lines the epithelial layer of serous membranes. (107)
surface tissue, skin, throat.
provides protection against abrasion, pathogens and chemical attack.
functions of pseudostratified columnar epithelium
secretes and propels mucus
protection, secretion, and absorption.
stratified columnar, with or without cilia
where stratified squamous epithelial-non keratinized can be found
tongue, oral mucosa, esophagus, anal canal, vagina
NON-KERATINIZED STRATIFIED SQUAMOUS EPITHELIUM
Many layers of cells. The surface cells are flat, contain nuclei and are alive. Deeper cells are cuboidal. IDENTIFICATION IS BASED ON THE CELLS AT THE FREE SURFACE. Found lining the mouth, lips, esophagus, vagina and anus.
KERATINIZED STRATIFIED SQUAMOUS EPITHELIUM
Many layers of cells. The surface cells are dead, flattened and lack nuclei. Deeper cells can be cuboidal or spindle shaped. Found only on the skin.
where simple cuboidal epithelium can be found
liver, thyroid, mammary, salivary, other glands, kidney tubules, bronchioles
function of transitional epithelium
stretches to allow filling of urinary tract
where simple columnar epithelium can be found
inner lining of stomach, intestine, gall bladder, uterus, uterine tubes, some kidney tubules
simple cuboidal
kidneys
simple squamous epithelium
photo here
transisitional epithelium
resembles stratified squamous epithelium, surface cells are rounded, not flattened, often bulge at surface, may be flatter and thinner when epithelium stretch
epithelium
Consists of cells arranged in continuous sheets, in either single or multiple layers. The cells are densely packed, held tightly together by numerous cell junctions, and there is little extracellular space between adjacent plasma membranes. (105)
simple columnar(3)
.made of celss that closely fit together.have glovet cells.someline the entire lenght of the digestive tract
mesentery
A fold of the peritoneum attaching the small Intestine to the posterior abdominal wall. (G-23, 822)
basal cells maybe cuboidal to columnar, apical cells may lack nucleus
stratified squamous epithelium-keratinized
TRANSITIONAL EPITHELIUM
Cells at the free surface are either SPHERICAL or BRICK-SHAPED The number of cell layers depends upon the stretch Imposed on It. Cells may contain two nuclei per cell. The cells can slip over each other. Found lining the ureter, urinary bladder and renal pelvis.
where stratified cuboidal epithelium is found
sweat glands ducts, egg-producing vesicles of ovaries, sperm-producing ducts of testis
functions of stratified cuboidal epithelium
contributes to sweat secretion, secretes ovarian hormones, produce sperm
SIMPLE CUBOIDAL EPITHELIUM
A single layer of cells roughly cube or pyramidal In shape. May be arranged in sheets as In the liver or In tubes as In the kidney or In spheres as In the acini of the salivary glands and pancreas.
where pseudostratified columnar epithelial cells can be found
respiratory tract from nasal cavity to bronchi, portions of male urethra
CILIATED PSEUDOSTRATIFIED COLUMNAR EPITHELIUM
Columnar cells with cilia on the free surface Shorter, unciliated cells are Interspersed between the taller cells. All cells touch the basement membrane, but not all cells reach the free surface. Some of the tall cells are GOBLET CELLS, which secrete mucus. Found lining the lumen of the trachea and bronchi.
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