3. Epithelium

Question 1

Which surface specialization increases surface area?

Answer 1

Microvilli

Question 2

What do all epithelia rest on?

Answer 2

Basement membrane

Question 3

What attaches the cytoskeleton to the basement membrane?

Answer 3

Hemidesmosome

Question 4

An epithelium in which all the cells rest on the basement membrane, but do not all reach the lumen is called?

Answer 4

Pseudostratified ciliated columnar

Question 5

This type of cellular junction is an example of an anchoring junction.

Answer 5

Desmosome

Question 6

What are the granules called that one finds in serous cells?

Answer 6

Zymogen granules

Question 7

What type of junction is sometimes called a tight junction?

Answer 7

Zonula Occludens

Question 8

What mode of secretion releases only part of the cell?

Answer 8

Apocrine

Question 9

The epithelial lining which lines the inside of blood vessels is known as?

Answer 9

Endothelium

Question 10

This is another name for eccrine secretion.

Answer 10

Merocrine

Question 11

What do you call a gland that produces protein for export?

Answer 11

Serous

Question 12

The epithelium which covers the surfaces of internal organs is known as?

Answer 12

Mesothelium

Question 13

What type of epithelium is adapted for absorption?

Answer 13

Simple Squamous

Question 14

What type of cell to cell attachment permits easy communication between cells?

Answer 14

Gap junction

Question 15

Which surface specialization is involved in moving secretions?

Answer 15

Cilia

Question 16

What mode of secretion secretes the whole cell?

Answer 16

Holocrine

Question 17

The vagina is lined by what kind of epithelium?

Answer 17

Stratified squamous epithelium

Question 18

What kind of epithelium lines the urinary bladder?

Answer 18

Transitional

Question 19

What do you call an epithelium with only a single layer of cells?

Answer 19

Simple

Question 20

What mode of secretion releases the product into the bloodstream?

Answer 20

Endocrine

Question 21

The rounded cells sometimes found on the surface of transitional epithelium are known as?

Answer 21

Umbrella cells

Question 22

3 major types of surface modifications

Answer 22

• microvilli
• stereocilia
• cilia

Question 23

4 basic properties of epithelium

Answer 23

1. Attachments
2. Cell polarity
3. High metabolic (mitotic) rate
4. Cell nutrition (avascular => nourishment via diffusion)

Question 24

Detection of this protein is used to diagnose carcinomas

Answer 24

Cytokeratin

Question 25

This protein is useful in diagnosing tumors of astrocytes

Answer 25

Glial fibrillary acidic protein (GFAP)

Question 26

Diagnostic importance of desmin immunohistochemistry detection

Answer 26

Smooth muscle tumors (Leimyosarcomas)

Question 27

What is adenocarcinoma

Answer 27

Cancer of the glands

Question 28

Epithelium - method of cell nutrition

Answer 28

Diffusion from blood vessels in connective tissues

Question 29

What is parenchyma

Answer 29

Functional component of a gland (e.g. secretory/ductal cells)

Question 30

What is metaplasia

Answer 30

Change in one type of epithelium to another

Question 31

Connective tissue component of a gland = ?

Answer 31

Stroma

Question 32

Formation of glands - connection to surface maintained

Answer 32

Exocrine gland

Question 33

Formation of glands - connection to surface lost

Answer 33

Endocrine gland

Question 34

3 types of exocrine glands classification

Answer 34

• Secretory product
• Method of secretion
• Morphology

Question 35

Secretory product of serous glands

Answer 35

Proteins