Epithelial Tissue Quiz
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Group of cells interconnected by ______ to carry out any specific functions and hold together, analogy- velcro
junction
What are the 4 types of tissues, which are major and minor?
• epithelial (major) • connective (major) RED BLOOD CELLS! • muscular (minor) • nervous (minor)
What is the study of tissues?
histology
Epithelial tissues have tightly packed _____
cells
Where are epithelial tissues found?
skin, blood vessels, ovaries, GI tract
Epithelial tissue is ______ meaning there is no blood supply (veins)
avascular
How do epithelial and connective tissue coexist? What process?
diffusion; from connective tissue underneath epithelial
Know the label diagram and its parts
-cilia -microvilli -apacal surface -basal surface -lateral surface -basement membrane -basal lamina -reticular lamina
How is epithelial tissue classified?
• # of layers • shape of cells
Simple
one layer of cells
Pseudostratified
appears to have multiple layers, but does not, fake
Stratified
multiple layers of cells
Simple squamous
-found in lungs, process of diffusion (molecules move greatly to less concentration), -found in kidneys (filtration, removing impurities from blood)
Simple cuboidal
seen in ovaries and ducts, lumen
Simple columnar
-can exist with cilia or without cilia, depending on cell function -goblet cells CILIATED (seen in trachea to remove debris, seen in fallopian tubes to ovary; move eggs) NONCILIATED (seen in stomach & intestines, possesses microvilli for absorption (increasing surface area), includes goblet cells, trachea tissue)
What is a goblet cell?
functions as a gland, secretes mucus
What is the lumen?
a hollow opening
Pseudostratified columnar
-all connected to basement membrane -reaches nuclei in different spots -possesses cilia which is seen in respiratory tract (bronchideo, trachea, lungs)
Transitional
“shape-shifter” -cuboidal to squamous -located in bladder and uterus
Stratified squamous
-made of multiple layers -found in skin, cervix, genital region, oral cavity -inside skin filled with keratin (protein) (waterproof protects against UV)
Stratified cuboidal
-2 or more layers; each cell with a nucleus -located in ducts of mammary glands, reproductive system of a female, pancreas, sweat glands
Stratified columnar
-2 or more layers, 1st attached to basement membrane -located inside the ducts of glands
What is the function and location of epithelial tissue?
function- protection, secretion, absorption, excretion location- cover body surface, cover and line internal organs, compose glands
What is the function and location of connective tissue?
function- bind, support, protect, and fill spaces, store fat, produce blood cells location- widely distributed throughout the body