Lab Exam Flashcards
Who is the father of modern histology?
Xavier Bichat
What is tissue doctrin
A principle by which it is the structure of the organ that leads to its function
What is most useful about paraffin sectioning?
It allows samples to be handled at room temp (other than frozen)
Hematoxylin stains..
Acidic structures, like nucleic acids, nuclei and RER BLUE
Eosin stains…
Basic structures, proteins and membranes PINK
Why is the posterior pituitary more pink than the anterior
Because it is mostly made of axon terminals, not nuclei, so it stains with eosin
What are acidophils that stain pink with H&E
Somatotrophs and lactotrophs
What are basophils that stain blue/purple with H&E
Corticotrophs, thyrotrophs and gonadotrophs
What is trabeculae
Connective tissue that extends inwards from capsule in thyroid
Follicular cells produce…
Thyroid hormone
Parafollicular cells produce…
Calcitonin
How do you identify a parafollicular cell
Large nucleated cell outside the regular boundary of the follicular cell
Where are the parathyroid glands located
On the four poles on the backside of the thyroid
What cells make up the parathyroid
Chief cells, oxyphil cells and adipose cells
What does parathyroid produce
Parathyroid hormone
