Topic 5 - Epithelial Tissues

Question 1

Give the four varieties of Epithelial tissue.

Answer 1

Surface, Secretory, Sensory, Pigment.

Question 2

Surface Epithelial Tissues

Answer 2

Cover outer and inner body surfaces. Form layers of basal lamina Act as protection and interfaces.

Question 3

3 shapes of 1 layer surface Epithelial cells.

Answer 3

Squamous (Flat), Cuboidal, Columnar

Question 4

Give 3 surface epithelial classes.

Answer 4

Pseudostratified Transitory Stratified

Question 5

Secretory Epithelial Tissues

Answer 5

Gland from surface epithelial. Forms invaginations

Question 6

“Endocrine”

Answer 6

Secretes into the blood stream

Question 7

“Exocrine”

Answer 7

Secretes onto a surface

Question 8

Where would simple cuboidal epithelium be found?

Answer 8

Lining Follicles in the thyroid Kidney

Question 9

Answer 9

Pseudostratified Columnar Epithelia

Found in Male urethra and trachea

Question 10

Answer 10

Transitional Epithelium

Question 11

The luminar surface of umbrella cells is covered by…

Answer 11

Calyx/Crusta

Question 12

Stratified epithelia have a can have a … surface.

Answer 12

Keratinised

Question 13

What defines simple epithelia?

Answer 13

It is composed of 1 layer of cells

Question 14

Squamous Epithelia

Answer 14

Thin

Allows transport over membranes

Found in endothelium and alveoli

Question 15

Simple Cuboidal

Answer 15

Forms ducts and secretory cells in glands

Question 16

Simple columnar

Answer 16

Tall, narrow, nuclei are near basal lamina

Question 17

Endoepithelial cells are found…

Answer 17

On the surface layer

Question 18

Exoepithelia are found…

Answer 18

In the underlying connective tissue

Question 19

3 varieties of exocrine gland.

Answer 19

Tubular, Acinar and Tubuloacinar.

Question 20

What is stroma?

Answer 20

Surrounds glands, made of collagen

Question 21

What are the three modes of secretion?

Answer 21

Merocrine, Apocrine, Holocrine

Question 22

Describe Serous Acini with example of where found

Answer 22

Narrow lumen, secreteory cells, thin, watery fluid

Pancreas

Question 23

Describe mucous acini

Answer 23

Wide lumen, flattened nuclei, produces thick mucin, lubricates organ linings

Question 24

Describe seromucous Acini

Answer 24

Surrounded by a serous ‘Demilune’ Empty products through small channels.