Endocrine Glands Flashcards
1
Q
Membrane impermeable hormones
A
- Peptides and proteins
- Glycoproteins
- Modified AAs
- Receptors are on the membrane
2
Q
Membrane permeable hormones
A
- Steroid and thyroid hormones
- Receptors are intracellular
3
Q
Characteristics of cells producing protein hormones
A
- Abundant RER
- Prominent Golgi
- Hormones in secretory granules
4
Q
Characteristics of cells producing steroid hormones
A
- Centrally located nucleus
- Lipid droplets
- Abundant smooth ER
- Spherical mitochondria with tubular or vesicular cristae
5
Q
Three regions of adenohypophysis
A
- Pars tuberalis
- Pars distalis
- Pars intermedia
6
Q
Chromophils
A
- Cells in the anterior pituitary that contain secretory granules that stained.
- Basophils and acidophils
7
Q
Chromophobes
A
- Cells in anterior pituitary that don’t stain well
- Stem/progenitor cells
8
Q
Acidophils
A
-Produce growth hormone (somatotropin) and prolactin
9
Q
Basophils
A
-Produce FSH, LH, TSH and ACTH, B-LPH
10
Q
Pars intermidea
A
- Largely inactive
- Colloid filled follicles and cysts
11
Q
Neurohypophysis
A
- Posterior pituitary
- No secretory granules
- Contains axons of neurons and glial cells
- Secretes ADH and oxytocin stored in Herring bodies
12
Q
Adrenal cortex
A
- Typical steroid producing cells
- Epithelial origin
- 3 zones
13
Q
Adrenal medulla
A
- Neuronal origin
- Electron dense secretory granules that react with chromium and silver salts
- Catecholamines
14
Q
Zona glomerulosa
A
-Mineral corticoids (aldosterone)
15
Q
Zone fasciculata
A
-Glucocorticoids (cortisol)
