Epithelium

Question 1

What are the two types of epithelial structures? Which is vascular?

Answer 1

Layers and clumps. Clumps are vascular, because they are endocrine/exocrine glands

Question 2

What is the basement membrane? What does it look like?

Answer 2

It is where the basal lamina of adjacent cell layers fuse. It is in sheets

Question 3

What are the components of the basal lamina?

Answer 3

Densa has laminin, type 4 collagen, fibronectin, GAG, proteoglycans. Lucida has extensions of transmembrane proteins

Question 4

Functions of basal lamina?

Answer 4

Home for cells, compartmentalization, specialized proteins for special functions

Question 5

Functions of the diffuse neuroendocrine system?

Answer 5

Secrete peptide hormones or serotonin, are paracrine, mostly in gut and respiratory system

Question 6

Myoepithelial cell function and location?

Answer 6

Surround acini and help expel product. Between BL and cell. Absent in malignancy

Question 7

Are stem cells found in layered epithelia or clumped?

Answer 7

Layered

Question 8

Do endocrine glands need ducts?

Answer 8

Nope

Question 9

Merocrine?

Answer 9

Only secretion released

Question 10

Apocrine?

Answer 10

Part of cell membrane goes with secretion

Question 11

Holocrine?

Answer 11

All of cell is signal

Question 12

Goblet cell function?

Answer 12

Secretes hormone or mucus that expands 500x

Question 13

Whaat protein attaches cells to BL?

Answer 13

Integrins