Introduction to histology Flashcards Preview

Phase 1 week 1 - the skin > Introduction to histology > Flashcards

Flashcards in Introduction to histology Deck (15):
1

Define a tissue

A group of cell working together to carry out a common function

2

Define an organ

More tissues of different nature compromised in a morphologically recognised structure

3

What is the most commonly used staining process?

Haemotoxylin eoisin

4

Describe the haemotoxylin eosin staining process

Haemotoxylin is a base, therefor it stains acids blue/purple. Eosin is an acid, therefore it stains bases red/pink.

5

Describe fixation

Fixing a tissue to ensure that there is no deterioration. Can be done by freezing using dry ice or chemically using aldehydes

6

Describe embedding

Tissue is put in a mould using either parrafin wax or frozen tissue

7

Sectionning

Cutting tissue into slices. The thinner the slice the higher the resolution of the image

8

What is the function of covering epithelium?

To protect connective tisues

9

What is the function of glandular epithelium?

To secrete materials

10

Name the 3 types of simple epithelium

Squamous, cuboidal and columnar

11

Where would you find simple epithelium

Places that require thin walls ie. gas exchange in alveoli

12

Describe stratified squamous epithelium

Allows the skin to bear stress

13

Describe pseudo-stratified epithelium

Epithelium that is cilliated or has stereocillia ie. in the trachea

14

Describe transitional epithelium

Urothel - found in the urinary bladded

15

Name some key features that covering and glandular epithelium share

Both form layers and have the capability to secrete materials