Epithelial Tissues & Glands Flashcards Preview

Anatomy Test One Material > Epithelial Tissues & Glands > Flashcards

Flashcards in Epithelial Tissues & Glands Deck (73)
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1

What are the four basic/primary types of tissues?

Epithelial tissues (aka epithelium); connective tissue, muscular tissue, nervous tissue

2

What are the two main categories of epithelial tissues?

1. covering or lining epithelium, 2. glandular epithelium

3

What are the six functions of epithelial tissue?

1. secretion; 2. absorption; 3. filtration; 4 excretion; 5. transport; 6. protection

4

What are the six characteristics of epithelial tissue?

1.cellular; 2.specialized contacts; 3.polarity; 4.supported by connective tissue (lamina propria); 5.avascular, but innervated; 6.regeneration

5

What are the three types of cell layers?

1. simple; 2. stratified, 3. pseudostratified

6

What are the three types of cell height/shape variations?

1.squamous; 2.cuboidal, 3.columnar

7

Describe simple layer of cells.

This is one layer of cells

8

Describe stratified layer of cells.

This is several layers of cells thick.

9

Describe pseudostratified layer of cells.

This is a layer that resembles a stratified layer however it is not stratified because all of the cells are in contact with the basement membrane.

10

Describe what a squamous cell looks like?

flattened with flattened nucleus from the side, look like irregular tiles from the top.

11

Describe what cuboidal cells look like?

Cubes with the nucleus in the center.

12

Describe what columnar cells look like?

Columnar cells are taller than they are wide and the nucleus are typically closer to the basement memrane

13

Describe transitional epithelium and what is it also called?

This is also called urothelium because it lines the bladder and has umbrella cells on the apical surface. These umbrella cells have the ability to stretch when the bladder is distended.

14

What are the four components involved in tissue naming?

Surface specialization + number of cell layers + cell morphology + tissue

15

What kind of tissue is in the air sacs of the lungs?

Simple squamous epithelium

16

What kind of tissue is in distal and proximal convoluted tubules of the kidney?

simple cuboidal epithelial cells

17

What are the primary functions of simple cuboidal epithelium?

Secretion and absorption

18

What are the mucous secreting unicellular glands that are associated with simple columnar epithelium?

Goblet cells

19

What is the function of simple columnar epithelium?

Absorption; secretion of mucous, enzymes, and other substances; ciliated type propels mucus (or reproductive cells) by ciliary action

20

What is the function of stratified squamous epithelium?

Protects underlying tissues in areas subjected to abrasion

21

Nonkeratinized stratified squamous epithelium lines what?

Moist linings of esophagus, mouth and vagina

22

Keratinized stratified squamous epithelium lines what?

The epidermis of the skin

23

What is a function of stratified columnar epithelium?

Protection and secretion

24

What does ciliated pseudostratified columnar epithelium line?

Trachea, most of the upper respiratory tract

25

What is the function of transitional epithelium?

Permits distension

26

What are the three distinct polarities of epithelial cells?

Apical domain, lateral domain, and basal domain

27

What are microvilli?

Cytoplasmic extensions/processes with core fo actin filaments

28

What are the function of microvilli?

Increase surface area

29

What are the names of the two kinds of borders created with microvilli?

Striated border (intestinal epithelium) or brush border (kidney tubule cell)

30

What are the average height and width of microvilli?

1 micrometer tall and 0.08 micrometer wide