Quiz 1 - Epithelial tissues

Question 1

Characterists of Epithelial tissues (CRAAAP)

Answer 1

cellularity, regeneration, attachments, avascular, arranged in sheets or layers, polarity

Question 2

cellularity

Answer 2

cells are bound close together

Question 3

regeneration

Answer 3

cells continuously replaced via cell divison

Question 4

attachment

Answer 4

attached to the basal lamina

Question 5

avascular

Answer 5

no blood vessels

Question 6

arranged in sheets or layers

Answer 6

composed of one or more layers of cells, tightly packed

Question 7

polarity (two types)

Answer 7

apical surface - exposed to external or internal surfaces

basal surface - attached to other things (tissues, etc.)

Question 8

Functions of Epithelial tissues (PPSS)

Answer 8

physical protection
control permeability
provide sensation
produce secretions

Question 9

Movement of fluids through epithelium

Answer 9

microvilli and cilia

Question 10

microvilli

Answer 10

for absorption and secretion

Question 11

cilia

Answer 11

moves substances over apical surfaces

Question 12

How does the epithelium maintain its integrity?

Answer 12

intercellular connections
attachment to basal lamina
epithelial maintenance and renewal

Question 13

Classification of epithelium

Answer 13

two types of layers : simple and stratified

Question 14

simple layers

Answer 14

single layer of cells, specialized for transportation (absorption, secretion)

Question 15

stratified layers

Answer 15

two or more layers of cells, specialized for physical protection

Question 16

Different types based on shapes

Answer 16

squamos, cuboidal, columnar

Question 17

squamos

Answer 17

thin, flat cells - “squished” nuclei

Question 18

cuboidal

Answer 18

cube-shaped cells - centered, round nucleus

Question 19

columnar

Answer 19

longer than they are wide, nucleus near base