2: Epithelium

Question 1

Epithelium

Answer 1

a sheet of cells that line all body surfaces, cavities, and tubular organs

Question 2

3 embryonic germ layers

Answer 2

ectoderm, endoderm, and mesoderm

Question 3

Avascular

Answer 3

no blood cells

Question 4

Apical surface

Answer 4

exposed to the external environment and carries out specific functions

Question 5

Basal surface

Answer 5

lies on a supporting connective tissue which is separates from the epithelium by a basement membrane

Question 6

Basal lamina

Answer 6

specialized collagenous fibers that make up the basement membrane

Question 7

laminin

Answer 7

an adhesive molecule that helps make up the basement membrane

Question 8

Simple squamous

Answer 8

single layer of flat cells, gases and liquid can diffuse across easily

Question 9

Endothelium

Answer 9

simple squamous cells that line blood vessels, lymphatics, and the heart

Question 10

Mesothelium

Answer 10

simple squamous cells that line seous body cavities and outer tubular organs in the abdomen

Question 11

What cells line the small tubules in the kidney?

Answer 11

simple squamous

Question 12

Simple cuboidal

Answer 12

single layer of cells where width and height are equal

Question 13

What do simple cuboidal cells line?

Answer 13

small ducts

Question 14

Simple columnar

Answer 14

single layer of cells where height is greater than width

Question 15

What do simple columnar cells line?

Answer 15

much of GI tract due to their secretory and absorptive capability

Question 16

Pseudostratified columnar

Answer 16

columnar cells that all touch basal lamina, but do not all reach the lumen

Question 17

Where do pseudostratified cells line?

Answer 17

reproductive and respiratory tracts because they usually have cilia to move particles

Question 18

Stratified squamous

Answer 18

multiple layers of cells where top layer is flat

Question 19

Keratinized stratified squamous

Answer 19

surface cells synthesize keratin

Question 20

Non-keratinized stratified squamous

Answer 20

surface cells are viable (esophagus)

Question 21

What do stratified cuboidal and columnar cells line?

Answer 21

large ducts

Question 22

Transitional stratified cells

Answer 22

changes between cuboidal and columnar depending on state of distention

Question 23

Where are transitional cells found?

Answer 23

urinary tract

Question 24

T/F: transitional cells all contact basement membrane

Answer 24

T

Question 25

What disease are white-faced animals prone to?

Answer 25

squamous cell carcinoma