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BMS 1001 > Epithellium > Flashcards

Epithellium Flashcards

1
Q

Where would you find Epithelial tissue?

A

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

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2
Q

Name the 4 types of tissue found in the body?

A
  • Epithelium tissue
  • Connective tissue
  • Muscle tissue
  • Neuron Tissue
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3
Q

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

A

Endothelium - Line cardiovascular system

Mesothelium - Line the internal cavities plural etc

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4
Q

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

A

Epidermis - Stratified Squamous keritising Epithelial.

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5
Q

What are epithelial characteristics?

A
  • Cellularity
  • Polarity
  • Attachment
  • Avasulalrity
  • Regeneration
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6
Q

Is epithelia vascular or Avascular?

A

Avascular

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7
Q

What does Contiguious mean?

A

It is when epithelia cells are closely packed together.

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8
Q

Epithelial cells are polarised. What dose this mean?

A

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

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9
Q

How is epithelia classified?

A
  • Number of cell layers
  • The shape of the cell
  • The presence of any surface specialisations
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10
Q

In regards to Epithelial cells what does cellularity mean?

A

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

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11
Q

In regards to epithelial cells what does polarity mean?

A

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

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12
Q

What are the four functions of epithelial tissue?

A
  • Provide physical protection
  • Control permeability
  • Provide sensation
  • Produce specilised secreations
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13
Q

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

A

The base and sides of the cell. Apical surface

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14
Q

Where is the Cilia found?

A

The respiratory tract or Fallopian tubes.

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15
Q

Where is villi found?

A

Digestive tract.

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16
Q

What are the 3 different types of cellular junction?

A
  • Tight Junction
  • Adherence Junction
  • Gap Junction
17
Q

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

A

Hemidesmosome.

18
Q

Where are micro filaments found?

A

Inside the Villi

19
Q

Where are micro tubules found?

A

Inside the cillia

20
Q

What are squamous cells?

A

Flattened cells

21
Q

What does stratified mean?

A

Many layers

22
Q

What is stratified transitional epithelium?

A

Epithelium that can change shape

23
Q

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

A

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

24
Q

Where might you find a Simple squamous epithelial layer?

A

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

25
Q

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

A

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

26
Q

Where might you find Stratified squamous epithelial?

A

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

27
Q

What is pseudo-stratified columnar epithelium?

A

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

28
Q

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

A

Mesothelium.

29
Q

Give 4 ways glands are classified?

A
  • Types of secretions,
  • Modes of secretions,
  • Gland structure
  • Shape of Secretory unit
30
Q

List the 3 modes of secretions

A

Melocrine (eccrin) - vesicles (most common)

Apocrine - shredding of cytoplasm and apical surface

Holocrine - cell bursting

31
Q

List the 3 types of secretions.

A

Serous - watery liquid

Mucous - mucous liquid

Seromucus - Mixed - variety of glandular cells

32
Q

What are the two main groups of glands?

What are there differences?

A

Exocrine and Endocrine

Exocrine - secrete onto the skin

Endocrine - secrete into the blood i.e, hormones

33
Q

Give some examples of Exocrine glands?

A

Salivary glands

Sweat glands

Sebacous glands

BMS 1001 (18 decks)

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