Epithelial Tissue

Question 1

Epithelial cells have a variety of functions

Answer 1

protection, transportation, glandular secretion, sensation

Question 2

selectively permeable barrier; respiratory spaces, Bowman’s capsule, endothelium, mesothelium

Answer 2

simple squamous

Question 3

protection,absorption, secretion; small ducts/kidney tubules/thyroid follicels

Answer 3

simple cuboidal

Question 4

protection and conduit;largest exocrine, anorectal

Answer 4

stratified columnar

Question 5

absorption and secretion;stomach, SI+colon, gallbladder

Answer 5

simple columnar

Question 6

absorption, secretion, transport; bronchial tree +vas deferens

Answer 6

pseudostratified

Question 7

distensable, protection; lower urinary tract

Answer 7

transitional

Question 8

protection;epidermis, oral cavity/esophagus, vagina; keratinization

Answer 8

stratified squamous

Question 9

protection and conduit; large ducts of exocrine, anorectal

Answer 9

stratified cuboidal

Question 10

membrane bound vesicles filled with product delivered to apical surface to fuse and release product into duct lumen

Answer 10

merocrine

Question 11

budding of product from apical surface as its surrounded by PM

Answer 11

apocrine

Question 12

programmed cell death of glandular cell filled with product then ruptures and releases product into lumen along with debris

Answer 12

holocrine

Question 13

simple tubular

Answer 13

large intestine

Question 14

simple coiled tubular

Answer 14

skin

Question 15

exocrine pancreas

Answer 15

compound acinar with pyramid shaped

Question 16

endocrine pancreas

Answer 16

islet of Langerhans and secrete insulin+glucagon

Question 17

increased surface area of epithelial cells, actin filament core anchored to terminal web, finger-like extensions of PM and cytoplasm

Answer 17

microvilli

Question 18

long, immotile microvilli, serve as mechanoreceptors when moved by surroundings–> signal transduction that allows body to sense movement

Answer 18

stereocilia

Question 19

9+2 mT arrangement, sliding movement initiated by dynein arms, ATP hydrolysis necessary

Answer 19

motile cilia

Question 20

passively bend and respond to fluid flow–> Ca2+ influx

Answer 20

primary cilia

Question 21

intracellular domain interacts with cytoplasmic catenins to link cadherins to actin filaments, Ca dependent

Answer 21

cadherins

Question 22

cell-cell or cell-ECM, Ca independent

Answer 22

integrins

Question 23

links cytoplasmic actin and ECM, composed of integrins, signal transduction from ECM to cell

Answer 23

focal adhesions

Question 24

integrins link plaque of BP230, erbin, and plectin to laminin 5 and type 4 collagen in basement membrane which attached to connective tissue with type 7collagen

Answer 24

hemidesmosomes