Epithelial tissue

Question 1

Term that refers to the unequal distribution of epithelial cells between attached and exposed surfaces

Answer 1

polarity

Question 2

Epithelial ___ contain blood vessels,

what is the term that refers to this?

Answer 2

Do Not

Avascular

Question 3

The surface of epithelium that attaches to adjacent tissues

Answer 3

Basal surface

Question 4

The surface of epithelium that faces open space is q

Answer 4

apical surface

Question 5

___ inside epithelium continually replace surface epithelial that are damaged or lost

Answer 5

Stem cells

Question 6

what is the difference between simple and stratified epithelium?

Answer 6

Simple= single layer of cells

Striated= multiple layers of cells

Question 7

Most delicate epithelium in the body

Answer 7

Simple Squamous epithelium

Question 8

Simple squamous epithelium that lines body cavities

Answer 8

Mesothelium

Question 9

Simple squamous epithelium that lines blood and lymphatic vessels

Answer 9

Endothelium

Question 10

type of epithelium that lines oral cavity, esophogus, rectum, anus, and vagina

Provides protection against abrasions and chemical attacks

Answer 10

Stratified squamous epithelium

Question 11

What are the 3 classifications based on shape?

Answer 11

• Squamous(flat sheet like)
• Cuboidal (hexigonal Square
• Columnar(hexigonal shape, tall)

Question 12

The main function of this epithilum is expansion and recoiling after stretch

Answer 12

Transitional Epithelium

Question 13

This epithelium is important for the lining of nasal cavity, trachea and bronchi and male reproductive tract

main function is protection and secretion

Answer 13

Pseudostratified ciliated epithelium

Question 14

what is the difference between cilia and microvilli?

Answer 14

Cilia are important for carrying things across a membrane (surface parallel transport)

Microvilli increase surface area for absorption purposes (transcellular transport)

Question 15

what are the 3 types of exocrine glads and how are they different?

Answer 15

Serous glands- secrete watery enzyme slution

Mucous glands secrete proteins called mucins

Mixed exocrine glands contain both serous and mucous glands

Question 16

what are the 3 methods of gland secretion? and how are they different?

Answer 16

Eccrine-release products through exocytosis
Apocrine- release products from the shedding of the apical portion of cell
Holocrine- cell bursts releasing products

Question 17

term for Abnormal Proliferation

cancer

Answer 17

Neoplasia

Question 18

what is the difference between Endocrine Glands and Exocrine glands

Answer 18

Endocrine- Ductless, hormones, can only effect cells that have receptor for hormone

Exocrine- have ducts, enzymes

Question 19

what are the 3 types of secretions( cause glands to secrete)

Answer 19

Humoral- different ion levels trigger

Neural- Action potential stimulates

Hormonal- another hormone stimulate

Question 20

what are the 4 types of intracellular junctions? and what do they do?

Answer 20

Tight Junctions- gatekeepers
Adhering Junctions- support and stability
Desmosomes- support and stability
Gap Junctions- cell to cell communication

Question 21

How are Adhering Junctions and Desmosomes different?

Answer 21

Adhering junctions are like a “belt” that wrap around cells

Desmosomes are like “snap buttons on jacket”

Question 22

This word means gland

Answer 22

adeno

adenocarcinoma=cancer of gland cell

Question 23

mucous is composed of ___ + water

Answer 23

Mucin

Question 24

refers to normal epithelia from one area is replaced by another form of epithelia not typical to that region

Answer 24

metaplasia