Laboratory 8: Epithelial Tissues

Question 1

What is the study of tissues called?

Answer 1

Histology.

Question 2

What are the four major types of tissues?

Answer 2

Epithelial, Connective, Muscle, Nervous.

Question 3

Where would you find epithelial tissue?

Answer 3

Cover’s most of the body’s external and internal surfaces and compromise most glands.

Question 4

What is the main function of connective tissue?

Answer 4

It binds and supports parts of the body.

Question 5

What is the function of nervous tissue?

Answer 5

Conducts impulses from one part of the body to another and helps to control and coordinate body activities.

Question 6

What is the function of muscle tissue?

Answer 6

Makes movements possible.

Question 7

What do the cells of epithelial tissue do when they are closest to the basement membrane?

Answer 7

Readily divide.

Question 8

What is a result from epithelial tissue being avascular?

Answer 8

Avascular (lack of blood cells)
Because they are avascular they rely on the vascularity of underlying connective tissue for nourishment and waste removal.

Question 9

What are the functions of epithelial tissues?

Answer 9

The functions of epithelial tissue include protection, filtration, secretion and absorption.

Question 10

What is a longitudinal cut?

Answer 10

Lengthwise cut. —-

Question 11

What is a cross section cut?

Answer 11

Cut across. | | | |

Question 12

What is an oblique section cut?

Answer 12

Angular cuts. /

Question 13

Describe simple squamous epithelium:

Answer 13

Single layer of flattened cells.

Question 14

Describe simple cubiodal epithelium:

Answer 14

Single layer of cubed shaped cells.

Question 15

Describe simple columnar epithelium?

Answer 15

Single layer ; elongated narrow cells. Some cilliated.

Question 16

Describe pseudostratified columanr epithelium

Answer 16

Single layer ; elongated cells some do not reach surface. Often cilliated.

Question 17

Describe stratified squamous epithelium? ( Non keratinized)

Answer 17

Many layers, surface cells flattened and REMAIN alive.

Question 18

Describe stratified squamous epithelium? (KERATINIZED)

Answer 18

Many layers, surface cells dead and keratinized.

Question 19

Describe stratified cubodial epithelium

Answer 19

2 to 3 layers, cube shaped cells.

Question 20

Locations of stratified squamous epithelium (KERATINIZED)

Answer 20

Epidermis of skin.

Question 21

Describe stratified columnar epithelium

Answer 21

Superfical layer of elongated cells; basal layer of cube shaped cells.

Question 22

Describe transitional epithelium

Answer 22

Many layers; cube shaped and elongated cells; thinner layers when stretched.

Question 23

Describe glandular epithelium?

Answer 23

Unicellular or multicellular

Question 24

What are the functions of epithelial tissue?

Answer 24

1) protection
2) absorption
3) secretion
4) excretion
5) sensation
6) contraction

Question 25

What is sescap?

Answer 25

protection 2) absorption 3) secretion 4) excretion 5) sensation 6) contraction

Question 26

consists of several layers of cubeshaped elongated and irregular cells, allowing an expandable lining

Answer 26

Transitional Epithelium

Question 27

Commonly possesses cilia that move dust and mucus out of the respiratory airways

Answer 27

Pseudostratified columnar epithelium.

Question 28

single layer of flattened cells

Answer 28

Simple squamous epithelium

Question 29

single row of elongated cells, but some cells don't reach the free surface

Answer 29

Pseudostratified columnar epithelium.

Question 30

forms walls of capillaries and air sacs of lungs

Answer 30

simple squamous epithelium

Question 31

provides lining of urethra of males and parts of pharynx

Answer 31

stratified columnar epithelium

Question 32

forms inner lining of urinary bladder and ureters

Answer 32

transitional epithelium

Question 33

lines kidney tubules and ducts of salivary glands

Answer 33

simple cuboidal epithelium

Question 34

forms lining of stomach and intestines

Answer 34

simple columnar epithelium

Question 35

two or three layers of cube-shaped cells

Answer 35

stratified cuboidal epithelium

Question 36

forms lining of oral cavity, anal canal, and vagina

Answer 36

stratified squamous epithelium

Question 37

Posesses microvilli in small intestine to increase surface area for better absorption

Answer 37

Simple columnar epithelium