Flashcards in Introduction to histology Deck (15):
Define a tissue
A group of cell working together to carry out a common function
Define an organ
More tissues of different nature compromised in a morphologically recognised structure
What is the most commonly used staining process?
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.
Fixing a tissue to ensure that there is no deterioration. Can be done by freezing using dry ice or chemically using aldehydes
Tissue is put in a mould using either parrafin wax or frozen tissue
Cutting tissue into slices. The thinner the slice the higher the resolution of the image
What is the function of covering epithelium?
To protect connective tisues
What is the function of glandular epithelium?
To secrete materials
Name the 3 types of simple epithelium
Squamous, cuboidal and columnar
Where would you find simple epithelium
Places that require thin walls ie. gas exchange in alveoli
Describe stratified squamous epithelium
Allows the skin to bear stress
Describe pseudo-stratified epithelium
Epithelium that is cilliated or has stereocillia ie. in the trachea
Describe transitional epithelium
Urothel - found in the urinary bladded