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BMS 1001 > Epithellium > Flashcards

Flashcards in Epithellium Deck (33):
1

Where would you find Epithelial tissue?

Epithelial cover every exposed surface of your body. Epithelial form the surface of the skin and line the digestive, respiratory, reproductive, and urinary tracts.

2

Name the 4 types of tissue found in the body?

  • Epithelium tissue
  • Connective tissue
  • Muscle tissue
  • Neuron Tissue

3

What are the two 'Epithelial-like' tissues and where are they found?

Endothelium - Line cardiovascular system

Mesothelium - Line the internal cavities plural etc

4

With reference to the Skin - what is the other name for the epithelium?

Epidermis - Stratified Squamous keritising Epithelial.

5

What are epithelial characteristics?

  • Cellularity
  • Polarity
  • Attachment
  • Avasulalrity
  • Regeneration

6

Is epithelia vascular or Avascular?

Avascular

7

What does Contiguious mean?

It is when epithelia cells are closely packed together.

8

Epithelial cells are polarised. What dose this mean?

They are not the same on all sides. They have different regions, apical, lateral and basal. These regions are known as domains.

9

How is epithelia classified?

  • Number of cell layers
  • The shape of the cell
  • The presence of any surface specialisations

10

In regards to Epithelial cells what does cellularity mean?

It refers to the various types of cell junctions between the cells.

11

In regards to epithelial cells what does polarity mean?

the presence of structural and functional differences between the exposed and attached (different cell) surfaces.

12

What are the four functions of epithelial tissue?

  • Provide physical protection
  • Control permeability
  • Provide sensation
  • Produce specilised secreations

13

What is a basolaterial surface and what is the name of the other surface?

The base and sides of the cell. Apical surface

14

Where is the Cilia found?

The respiratory tract or Fallopian tubes.

15

Where is villi found?

Digestive tract.

16

What are the 3 different types of cellular junction?

  • Tight Junction
  • Adherence Junction
  • Gap Junction

17

What is the name of the junction used to hold the cell to the basement membrane?

Hemidesmosome.

18

Where are micro filaments found?

Inside the Villi

19

Where are micro tubules found?

Inside the cillia

20

What are squamous cells?

Flattened cells

21

What does stratified mean?

Many layers

22

What is stratified transitional epithelium?

Epithelium that can change shape

23

When looking at a squamous layer, how do you classify the type of cell? i.e Stratified _________ epithelal

You look at the top layer of the epithelial and call it that. i.e. skin is Stratified Squamous Epithelia

24

Where might you find a Simple squamous epithelial layer?

Lining of the  alveoli, kidney tubules - used in areas where absorption is needed, fragile layer.

25

Whats the difference between the classification of Simple and stratified layers?

Simple is only one cell deep whereby stratified in many cells deep.

26

Where might you find Stratified squamous epithelial?

Surface of skin; lining of mouth, throat, esophagus, rectum, anus, and vagina

27

What is pseudo-stratified columnar epithelium?

Epithelium that gives the impression that is many layers but is in fact singular - found in the trache and Broncus

28

What is the name given to the simple squamous epithelium lining the plural cavity?

Mesothelium.

29

Give 4 ways glands are classified?

  • Types of secretions,
  • Modes of secretions,
  • Gland structure
  • Shape of Secretory unit

30

List the 3 modes of secretions

Melocrine (eccrin) - vesicles (most common)

Apocrine - shredding of cytoplasm and apical surface

Holocrine - cell bursting

31

List the 3 types of secretions.

Serous - watery liquid

Mucous - mucous liquid

Seromucus - Mixed - variety of glandular cells

32

What are the two main groups of glands?

What are there differences?

Exocrine and Endocrine

Exocrine - secrete onto the skin

Endocrine - secrete into the blood i.e, hormones

33

Give some examples of Exocrine glands?

Salivary glands

Sweat glands

Sebacous glands