Endocrine Flashcards
Which endocrine gland does not comprise of glandular epithelium tissue
Posterior pituitary
What is a downgrowth of the hypothalamus
Posterior pituitary
Where are pituicytes found
Anterior pituitary gland
What are the most common pituicytes (50%)
Somatotrophs - Growth hormone
What do corticotrophs secrete
ACTH
What percentage of pituicytes do gonadotrophs make up
10%
What cells secrete TSH
Thyrotrophs
What make up 25% of the pituicytes
Lactotrophs - Prolactin
which pituicytes surround adjacent cells
Lactotrophs
Where does a pituitary adenoma arise
out of the sella tursica
What does the pineal gland secrete
Melatonin
What is the arrangement of the pineal gland
pinealocytes arranged in rosettes
What hormones does the thyroid produce
Calcitonin and Thyroxine
What type of cells are in the thyroid
Follicular epithelial cells with colloid which produce Thyroxine
C cells which produce calcitonin
How many parathyroid glands are there
4
What are the cells of the parathyroid glands
Chieff cells - Secrete PTH
Ocyphils
Adipocytes
Which cells secrete PTH
Chieff Cells
Where are most of the islets of langerhans
in the pancreatic tail
What are the cells of the islets of langerhans
Beta cells 70%
Alpha cells 20%
Delta cells 5-10%
PP cells 1-2%
What do the beta cells of the islets of langerhans produce
Insulin
What do the alpha cells of the islets of langerhans produce
Glucagon
What do the Delta cells of the islets of langerhans produce
Somatostatin
What do the PP cells of the islets of langerhans produce
Pancreatic polypeptide
What does the Zona glomerulosa produce
Mineralocorticoids - Aldosterone
What does the zona fasiculata produce
Glucocorticoids - cortisol
What does the Zona reticularis produce
Androgenic Steroids
What produces Aldosterone
The Zona glomerulosea
What produces cortisol
Zona Fasiculata
What does the medulla of the adrenal gland produce
Adrenaline and noradrenaline
What cells are in the medulla of the adrenal gland
chromaffin cells
