Epithelial Tissues Part 1 and 2

Question 1

What are tissues

Answer 1

Multiple cells that work together to do a common function and are similar in structure

Question 2

What is the study of tissue?

Answer 2

Histology; subset of Microscopic Anatomy

Question 3

How many types of tissues are there?

Answer 3

4 Basic types

Question 4

What are the types of tissue and what do they each do?

Answer 4

Connective (supports/connects tissues together), Epithelial (protects), Muscle (moves), and Nervous tissue (controls)

Question 5

What does epithelium really mean?

Answer 5

It’s something that creates a boundary between two environments that lets certain things pass

Question 6

What are the types of epithelial tissue?

Answer 6

Lining Epithelium and Glandular Epithelium

Question 7

Where is lining epithelium found?

Answer 7

It forms the outer layer of skin and organs

Question 8

What type of shape does lining epithelium form?

Answer 8

A sheet formation; cells side by side connected to make epithelial tissue

Question 9

What does glandular epithelium do?

Answer 9

Forms glands of body

Question 10

Function of glandular epithelium

Answer 10

Produce and release secretory products: sweat, saliva, digestive enzymes
- i.e. thyroid gland

Question 11

What type of shape does glandular epithelium take on?

Answer 11

Circular substance

Question 12

What are the main functions of epithelia?

Answer 12

Protection, Absorption, Secretion, Sensory Reception

Question 13

How does sensory reception work in epithelial cells?

Answer 13

Some epithelial cells have hair which sends signals to the brain to let it know if there is something amiss

Question 14

What components make up the Epithelial Tissue structure?

Answer 14

Apical + Basal surface and Basal Lamina

Question 15

What is the Apical surface?

Answer 15

surface that is more exposed to the exterior environment or exposed to the cavity of the organ

Question 16

What do the apical surface usually have?

Answer 16

Microvilli and Cilia: help with sensory reception or brushing things along (i.e. respiratory tract)

Question 17

What is the Basal surface?

Answer 17

Located at the bottom; utilized for anchoring the bottom portion to connective tissue

Question 18

How does the Basal surface anchor itself to other structures/tissues?

Answer 18

With Basal Lamina

Question 19

How does Basal Lamina work?

Answer 19

acts as an adhesive sheet beneath that Basal surface to join the epithelial with connective tissue (most of the time it’s epithelial)

Question 20

What does it mean when epithelial tissue is “avascular, but innervated?”

Answer 20

It means that it does not have it’s own blood supply but it get a supplied with plenty of nerves

Question 21

How does epithelial tissue have high regenerative capacity even though it is avascular?

Answer 21

Although it is avascular, it gets its nutrients and oxygen from nearby blood vessels.

Question 22

How is epithelial tissue classified?

Answer 22

Arrangement of layers & Cell shape

Question 23

What are the names of the different types of arrangement of layers for epithelium tissue?

Answer 23

Simple, Pseudostratified, Stratified

Question 24

What do simple epithelium look like?

Answer 24

One layer; apical and basal surface aligned and in direct contact with the basement membrane

Question 25

What is simple epithelium tissue's function?

Answer 25

Helps with passing substances because of thinness and absorption and secretion

Question 26

What do Pseuodostratified epithelial tissue look like?

Answer 26

Single layered and all cells are in contact with basement membrane

Question 27

What is the function of pseudostratified epithelial tissue?

Answer 27

Protection and passing substances through; absorption and secretion

Question 28

What is pseudostratified epithelial tissue common in?

Answer 28

It's common in the respiratory system

Question 29

What do stratified epithelial tissue look like?

Answer 29

Multiple layers of cells; not all the cells touch the basement membrane

Question 30

What is the function of stratified epithelial tissue?

Answer 30

Protection; difficult to penetrate it

Question 31

What are the names of the cell shapes for epithelial cells?

Answer 31

Squamous, Cuboidal, Columnar

Question 32

Squamous cells look like?

Answer 32

Flat looking cells

Question 33

Cuboidal cells look like?

Answer 33

Cube-looking cells

Question 34

Columnar cells look like?

Answer 34

Long, skinny and tall cells

Question 35

What's common for epithelial arrangement layers to have?

Answer 35

It's common for them to have two different cell shapes

Question 36

What does more layers mean for epithelial tissue?

Answer 36

More thicker = More protection

Question 37

What does a single layer of epithelial tissue allow for?

Answer 37

Easy access for substances to pass

Question 38

What are the only two epithelial tissues that are single layered?

Answer 38

Simple and Pseudostratified

Question 39

How are cilia helpful?

Answer 39

Found on the apical surface of some epithelial tissue; moves substances or involved in sensation

Question 40

What is a simple squamous?

Answer 40

A very thin epithelial tissue

Question 41

Where are simple squamous epithelium found?

Answer 41

Areas where absorption/secretion is important - i.e. walls of blood vessels or walls of air sacs

Question 42

What does a simple squamous look like if you were to describe it?

Answer 42

Simple arrangement of layers (single layered) & flat looking cells - every cell is in contact with the basement membrane

Question 43

What is stratified squamous?

Answer 43

A very thick epithelial tissue

Question 44

Where can you commonly find stratified squamous epithelium?

Answer 44

Areas where protection is important - i.e. SKIN

Question 45

What's unique about stratified squamous epithelium

Answer 45

Closer to basement membrane there are cuboidal cell shapes and top there are flattened squamous cells

Question 46

How many different types of cells can glands be created by?

Answer 46

Consist of one cell or multiple cells

Question 47

What are the functions of glandular epithelium?

Answer 47

Make or secrete particular substances

Question 48

What are the two types of gland and how do they differ?

Answer 48

Endocrine (substances are secreted into the bloodstream) & Exocrine (substances are secreted through ducts to their destination)

Question 49

Which one of the two glands are more controlled

Answer 49

Exocrine - it travels through ducts to get it's destination; endocrine releases it into the bloodstream so it can practically go anywhere

Question 50

How do endocrine glands function?

Answer 50

Epithelial cells that produce the hormone surround the storage site. When it's ready to diffuse, there are blood vessels nearby outside the epithelial to take the hormones into the bloodstream

Question 51

How do exocrine glands function?

Answer 51

A bunch of epithelial cells form around the duct that collects the substance and when it's ready to go, the substance goes through the duct and onto the body's surface