Epithelial Tissue

Question 1

Main functions of epithelial tissue (5)

Answer 1

Protection
Trancellular transport (Secretion & Absorption)
Sensory detection

Question 2

Order of layers in epithelial tissue

Answer 2

(Out)Lumen
Epithelial cells
Basement membrane
(In) CT

Question 3

3 domains in epithelial tissue

Answer 3

Apical, lateral, basal

Question 4

Domain that borders lumen

Answer 4

Apical

Question 5

The apical domain includes what cytoskeletal elements

Answer 5

Microvilli (absorb)
Cilia (movement)

Question 6

What are the two types of glands present in epithelial tissue?

Answer 6

Endocrine and exocrine

Question 7

Endocrine glands secrete _____

Answer 7

Basally

Question 8

What type of epithelial gland has serous v. mucous

Answer 8

Exocrine glands

Question 9

What is the function of microvilli?

Answer 9

Absorption
(Brush border)

Question 10

What is glycocalyx?

Answer 10

A sugar coat that extends surface area
(Can be found in kidney)

Question 11

What is the function of cilia?

Answer 11

They aid in movement
(Wild hair)

Question 12

What is the function of the lateral domain?

Answer 12

Barrier
Communication
Adherence
(attaches to cell to cell)

Question 13

Lateral interdigitations _______ surface area.

Answer 13

Increase

Question 14

The junctional complex is included in which domain?

Answer 14

Lateral domain

Question 15

What are the three parts of the junctional complex?

Answer 15

Zona occludens
Zona adherens
Macula adherentes

Question 16

Which two parts of the junctional complex help with adhesion?

Answer 16

Zonal adherens and macula ad

Question 17

Which part of the junctional complex is the tight junction?

Answer 17

Zonula occludens
(Protective barrier)

Question 18

Which part of the junctional complex is the intermediate junction?

Answer 18

Zonula adherens

Question 19

Which part of the junctional complex is the desmosome (“spot Jxn”)

Answer 19

Macula ad

Question 20

What is not part of the junctional complex but still aids in communication between cells, when open?

Answer 20

Connexons

Question 21

The intermediate jxn (Z.A) is made up of?

Answer 21

Actin

Question 22

Desmosome (M.A) is made up of?

Answer 22

Intermediate filaments

Question 23

Basement membrane separates the epithelial layer from what?

Answer 23

Connective tissue

Question 24

Basal domain consists of the basal lamina and ___________.

Answer 24

Reticular lamina

Question 25

How do epithelial cells attach to basal lamina?

Answer 25

Hemidesmosomes “Spot welds”

Question 26

Which cell classification is most flat?

Answer 26

Squamous

Question 27

Cell classification that looks like squares/cubes?

Answer 27

Cuboidal

Question 28

Tall column like cell classification type?

Answer 28

Columnar

Question 29

What does stratified indicate in terms of cell classification?

Answer 29

Has more than one cell layer

Question 30

What does simple indicate in terms of cell classification?

Answer 30

One layer of cells

Question 31

Pseudostratified columnar cells look like what?

Answer 31

Look like they consist of more than one layer but do NOT

Question 32

The shape of cell closest to lumen or the outside world will be the name. T/F?

Answer 32

True

Question 33

Transitional epithelium is present only in the _______

Answer 33

Bladder (Distensible, Rounded surface)

Question 34

Glands are created by both epithelial tissue and _______ tissue.

Answer 34

Connective

Question 35

What part of the gland is formed by epithelial tissue?

Answer 35

Parenchyma

Question 36

What part of the gland is created by connective tissue?

Answer 36

Stroma

Question 37

What are the two types of glands

Answer 37

Endocrine Exocrine

Question 38

What is the function of an endocrine gland?

Answer 38

Secrete basally hormones directly into blood stream

Question 39

What is the function of an exocrine gland?

Answer 39

Secrete apically Into ducts (Serous or mucous)

Question 40

What are goblet cells?

Answer 40

Mucous secreting cells present in both the intestines and the lungs.