Lecture 3 Old Notes: Tandler

Question 1

All surfaces of the body, internal and external, are covered by what type of tissue?

Answer 1

Epithelial

Question 2

What are the three listed functions of epithelium?

Answer 2

Absorption, secretion, protection

Question 3

Is connective tissue always above or below epithelium?

Answer 3

Beneath

Question 4

All structures in connective tissue (never/always) enter sheet of epithelium

Answer 4

Never

Question 5

What structure lies between the epithelium and connective tissue, which is partially secreted by both of these structures?

Answer 5

Basement membrane

Question 6

Is the epithelium on top of or below basement membrane?

Answer 6

The epithelia rests on the basement membrane

Question 7

If epithelia is two cells or more thick, how is it classified?

Answer 7

Stratified

Question 8

Does every single cell for pseudostratified epithelium touch the basement membrane?

Answer 8

Yes

Question 9

What type of epithelium lines blood vessels?

Answer 9

Simple squamous

Question 10

What type of tissue is found in the thyroid gland?

Answer 10

Simple cuboidal

Question 11

What is the process of orthokeratinization?

Answer 11

The loss of all organelles, including the nucleus

Question 12

Where do you find stratified squamous epithelium?

Answer 12

Wet areas (i.e. the mouth)

Question 13

What is special about the lifespan of cells in wet areas? What about their nuclei?

Answer 13

Since the tissue is stratified squamous, the cells don’t die and their nuclei are retained up at the surface of the cell

Question 14

Where do you find stratified cuboidal epithelium?

Answer 14

In the ducts of sweat glands

Question 15

Where is transitional epithelium found?

Answer 15

In the renal pelvis and the ureter

Question 16

What is special about transitional epithelium in regards to the number of cells, and the capacity to stretch?

Answer 16

The number of cell layers can change, and the cells may stretch

Question 17

For bulk endocytosis, is there coating or no coating of the vesicles? Is it specific or non-specific

Answer 17

No coating on the vesicles, non-specific

Question 18

For receptor-mediated endocytosis, are the vesicles coated or not? Does it have a way to take in specific molcecules or not?

Answer 18

There is a coating, and the endocytotic vesicles have receptors for specific molecules

Question 19

Insulin demonstrates what type of endocytosis?

Answer 19

Receptor-mediated endocytosis

Question 20

What structure allows epithelial cells to increase their efficiency of absorption?

Answer 20

Cilia

Question 21

T/F every living cells has glycocalyx

Answer 21

True

Question 22

What is the function of the glycocalyx, in reference to it’s location on the surface of cells?

Answer 22

Plays a part of the recognition mechanism

Question 23

What is the protective function of glycocalyx in the gut?

Answer 23

It prevents bacteria from touching the plasma membrane, and this is protective

Question 24

What three components comprise the glycocalyx?

Answer 24

Fuzz coat (cell signaling), intercellular cement, portion of the basement membrane