living fabric, woven
What are tissues? - ANSWER a group of cells that are similar in structure and perform a
common function
What are organs? - ANSWER a group of tissues that are similar in structure and perform a
common function
What does a histologist do? - ANSWER study tissues
What is histology? - ANSWER the study of tissues
What are the 4 main tissue types? - ANSWER epithelial, connective, muscle, nervous
What is epithelial tissue for? - ANSWER covering or lining
What is connective tissue for? - ANSWER supporting or connecting
What is muscle tissue for? - ANSWER movement (of bones or substances like blood, food,
urine)
What is nervous tissue for? - ANSWER control (of muscles, glands, or organs)
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,What is the order for tissues? - ANSWER ECM - epithelial, connective, muscle/nervous
What color does epithelial tissue stain? - ANSWER purple
What color does connective tissue stain? - ANSWER light pink (takes a little bit of purple
and red stain)
What color does muscle tissue stain? - ANSWER red
What color does nervous tissue stain? - ANSWER white, it can stain various colors
Nerves are usually intermingled with which other tissue? - ANSWER muscle
What 2 tissues do connective tissue connect? - ANSWER epithelial and muscle
What tissue is usually wedged between the other types? - ANSWER connective tissue
What does "epi" mean? - ANSWER over, above, on top
Where is epithelial tissue located? - ANSWER covers surfaces - skin, organs, lines cavities
or tubes - digestive tract, blood vessels
Where are the apical cells? - ANSWER upper, exposed to external or internal environ-
ment
Where are the basal cells? - ANSWER lower, attached to connective tissue below it
Epithelial tissue is supported by which type of tissue? - ANSWER connective tissue
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, What is the "basement membrane"? - ANSWER the junction of epithelial and connective
tissue
What is the main content of epithelial tissue? - ANSWER cells - consists of a whole bunch
of cells stacked on top of one another
What is the disadvantage of epithelial tissue being avascular? - ANSWER it doesn't have
its own blood supply and has to get nutrients by diffusion from blood vessels in connective
tissue
Is epithelial tissue vascular or avascular? - ANSWER avascular
What is the advantage of epithelial tissue being highly regenerative? - ANSWER it is able
to reproduce itself rapidly by mitosis - this is necessary because cells die and fall off fre-
quently (means they can reproduce themselves rapidly by mitosis - cell division)
What are specific epithelial tissue functions? - ANSWER protection, absorption, filtration,
secretion
Which of the specific epithelial tissue functions are most likely due to being a covering? -
ANSWER protection
Which of the specific epithelial tissue functions are most likely due to being a lining? - AN-
SWER absorption, filtration, secretion
Epithelial tissue function: protection - ANSWER (skin) blocks out harmful substances - ep-
ithelial covering of skin protects from bacteria and chemicals
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