Epithelial tissue

Question 1

Characteristics

Answer 1

Cell junction
Polarity
Attachment
Avascularity
Regeneration

Question 2

Function

Answer 2

Physical protection
Control permeability
Sensation
Secretion

Question 3

WHat increases surface area

Answer 3

Microvilli increase absorption/secreation
Cilia moves fluids

Question 4

what holds it together

Answer 4

intercellular connections
attachment to basement membrane
maintenance and repair

Question 5

Intercellular connections

Answer 5

cell junctions
bonds between adjacent cells
support and communication

Question 6

tight junction

Answer 6

nothing goes through

Question 6

Whar does intercellular connections include

Answer 6

tight junction
gap junction
desmosomes

Question 7

gap junction

Answer 7

things go through for communication

Question 8

desmosome

Answer 8

belt (continious hold around)
button (interupted hold around)

Question 9

Basement Membrane

Answer 9

Basal Lamina
2 layers

Question 10

what are the 2 layers of basement membrane

Answer 10

lamina lucida
lamina densa

Question 11

lamina lucida

Answer 11

thin layer produced by epithelium

Question 12

Lamina densa

Answer 12

thick fibers produced by connective tissues

Question 13

Hemidesmosomes

Answer 13

Attachment of epithelial cells to basal lamina

Question 14

What is the maintenance and repair of epithelial cells

Answer 14

replaced by division of STEM cells

Question 15

What are the classifications of epithelial tissues

Answer 15

Epithelia
Glands

Question 16

Epithelia

Answer 16

surface epithelium (skin)
layers of cells covering external or lining internal surface

Question 17

glands

Answer 17

structures that produce secretion

Question 18

WHat are the classifications of surface epithelia (shape)

Answer 18

squamous
cuboidal
columnar

Question 19

WHat are the classifications for surface epithelia (# of layers)

Answer 19

simple
stratified

Question 20

Simple squamous epithelium

Answer 20

reduces friction
lung alveoli

Question 21

stratified squamous epithelium

Answer 21

physical protections
skin

Question 22

simple cuboidal epithelium

Answer 22

absorption and secretion
renal tubule

Question 23

Stratified cuboidal epithelium

Answer 23

protection, absorption and secretion
sweat/mammary glands

Question 24

Transitional cuboidal epithelium

Answer 24

can stretch and glide stretch and recoil urinary bladder

Question 25

Simple columnar epithelium

Answer 25

absorption and secretion stomach, intestine -microvilli for surface area + absorption

Question 26

Stratified columnar epithelium

Answer 26

protection salivary gland duct

Question 27

Pseudostratified columnar epithelium

Answer 27

protection, secretion, cilia movement trachea, bronchi diff cell heigh = looks like layer pseudo = fake really only 1 layer

Question 28

Glandular epithelium

Answer 28

endocrine glands exocrine glands

Question 29

endocrine glands

Answer 29

no duct release hormones to interstitial fluid ie blood thyroid/adrenal gland

Question 30

exocrine gland

Answer 30

produce secretion have duct to epithelial surface sweat gland

Question 31

types of exocrine secretion

Answer 31

merocrine apocrine holocrine

Question 32

Merocrine

Answer 32

released by vesicle exocytosis sweat gland

Question 33

apocrine

Answer 33

released by shedding cytoplasm cell stays alive and repeats eg milk from mammary gland

Question 34

Holocrine

Answer 34

released by cells bursting cells die replaced by stem cells sebaceous gland

Question 35

structure of exocrine cells

Answer 35

unicellular multicellular

Question 36

unicellular exocrine cell

Answer 36

goblet (only type) scattered along epithelia intestinal line secrete mucin = makes mucous

Question 37

Multicellular exocrine cell structure of duct

Answer 37

simple (undivided) compound (divided)

Question 38

Multicellular exocrine cell shape of secretion portion

Answer 38

tubular (tube) alveolar/acinar (chamber) tubuloaveolar (mix of both)