Week3 epithelial

Question 1

What are epithelial cells?

Answer 1

groups of cells that line or cover things

Question 2

what are the 5 functions of epithelial cells?

Answer 2

protection
absorption
excretion (leaves the body)
secretion (stays in the body)
recieving sensory input

Question 3

what is the side closest to the surface called?

Answer 3

apical

Question 4

what is the side furthest from the surface called?

Answer 4

basement membrane

Question 5

Avascular

Answer 5

lack of blood vessels or blood supply

Question 6

What junction attaches the epithelium to the basement membrane?

Answer 6

hemi desmosomes

Question 7

Whats another word for basement membrane?

Answer 7

basal lamina

Question 8

What type of cancer does not pass the basement membrane?

Answer 8

benign

Question 9

What type of cancer does cross the basement membrane?

Answer 9

malignant

Question 10

Microvilli

Answer 10

hair like protrusions from the apical surface

Question 11

Cilia

Answer 11

hair like protrusions

Question 12

What does cilia do?

Answer 12

moves things around

Question 13

Goblet cell

Answer 13

secretes mucus (looks like a wine glass)

Question 14

Keratin

Answer 14

sits on the surface of the skin

Question 15

keratinized epithelium

Answer 15

keratin on the apical surface

Question 16

What are the 4 types of junctions

Answer 16

Tight junction
desmosomes
gap junction
hemi desmosomes

Question 17

Tight junction

Answer 17

nothing can move through

Question 18

desmosomes

Answer 18

come together like velcro

- most common junction

Question 19

Gap junction

Answer 19

attachment with openings on it

Question 20

hemi desmosomes

Answer 20

connect the epithelium to the basement floor

Question 21

How are epithelium classified

Answer 21

by shape and number of layers

Question 22

squamous

Answer 22

flat

Question 23

Cuboidal

Answer 23

cube like

Question 24

columnar

Answer 24

looks like columns

Question 25

simple

Answer 25

1 layer

Question 26

stratified

Answer 26

2 or more layers

Question 27

pseudo stratified

Answer 27

nucli are all over the place

Question 28

what are the 3 shapes we use to classify epithelia?

Answer 28

squamous cuboidal columnar

Question 29

Transitional Epithelial

Answer 29

changes when the bladder is full vs empty

Question 30

What are the 2 types of glands?

Answer 30

endocrine | exocrine

Question 31

How are glands classified?

Answer 31

unicellular | multicellular

Question 32

What are the 3 ways products get released

Answer 32

merocrine glands apocrine glands holocrine glands

Question 33

Merocrine glands

Answer 33

product is made but cells are fine

Question 34

apocrine glands

Answer 34

looks like a triangle. Top part of the "triangle" pinches off

Question 35

Holocrine

Answer 35

product stored in granules until needed then enter the cell and self destruct