02b: Histology Flashcards
Secretion granules of exocrine cells are (basally/apically/laterally) located. And those of endocrine cells are (basally/apically/laterally) located.
Apically;
Basally
Paneth cells will have (apical/basal) secretory granules. And EECs?
Apical;
Basal
You may see profiles of (X) vessels in the adrenal (cortex/medulla).
X = medullary veins
Medulla
T/F: Like the kidneys, the adrenals lack serosal envelope and are retroperitoneal.
True
Cells of (X) layer of adrenal cortex are arranged in linear fashion and contain finely vacuolated cytoplasm. These cells are called (Y).
X = zona fasciculata Y = spongiocytes
Adrenal medullary cells are (smaller/larger) than those in cortex and their nuclei look (X). These relatively (basophilic/eosinophilic) cells are formally called (Y).
Larger;
X = round and euchromatic
Basophilic
Y = chromaffin cells
T/F: Adrenal medulla’s parenchyma is actually composed of modified parasympathetic ganglia.
False - sympathetic ganglia
The thyroid’s ovoid/spheroid multicellular (X) structures are surrounded by wall of (Y) cells. The cell’s (apical/basal) surface faces inward.
X = follicles
Y = follicular
Apical
The content of thyroid follicle, (X), would be expected to stain (positive/negative) in PAS stain and appear (Y) color.
X = thyroid colloid
Positive;
Y = magenta
Thyroid colloid consists of (X) protein, produced by (Y) cells.
X = thyroglobulin Y = follicular
Follicular cells of (X) have (basally/apically)-located phagosomes that contain (Y).
X = thyroid
Apically;
Y = colloid
(X) cell in thyroid gland has basally-localized granules.
X = parafollicular (or C)
The parathyroid’s parenchyma consists of which cell(s)? Star the most numerous.
- Chief (principal)*
2. Oxyphil
Secretory granules in the pars nervosa are (apically/basally)-located.
No secretory cells in pars nervosa
Looking at scan of pituitary, you notice the (neuro/adeno)-hypophysis has prominent gold-stained (Y), scattered throughout the area. Which type of stain is used?
Both (esp adenohypophysis)
Y = RBCs (in blood vessels)
Trichrome stain
Herring bodies in (X) will have certain staining properties due to which of their contents?
X = pars nervosa
Hormones packaged in vesicles in axon terminal
(X) are the supporting cells of the pars nervosa. Their characteristic (Y) nuclei can be seen faintly in trichrome stain.
X = pituicytes Y = oval, euchromatic
List the only cells’ nuclei you’d expect to see in histo slide of pars nervosa.
- Endothelial cells
2. Pituicytes
T/F: The pars distalis and the pars nervosa are the glandular parts of the pituitary.
False - neurohypophysis is NOT glandular. Adenohypophysis is
Cells of the pars distalis are classified into which three categories? Star the most numerous of these.
- Acidophilic
- Basophilic
- Chromophobes*
(X) cells in pars distalis are PAS-positive and have (Y)-containing granules in cytoplasm.
X = basophil Y = glycoprotein (FSH, LH, TSH) or ACTH
(X) artery gives rise to primary capillary plexus, which surrounds (Y) structure of pituitary.
X = superior hypophyseal a Y = median eminence
(X) artery gives rise to secondary capillary plexus, which surrounds (Y) structure of pituitary.
X = superior hypophyseal a Y = pars distalis
(X) artery gives rise to branches, which supply pars nervosa.
X = inferior hypophyseal
List the structures that comprise the hypophyseal stalk.
- Infundibular stalk
2. Pars tuberalis
List the structures that comprise the anterior lobe of pituitary.
Pars distalis
List the structures that comprise the posterior lobe of pituitary.
Pars nervosa and intermedia
T/F: Median eminence is part of adenohypophysis.
False - neurohypophysis
T/F: Infundibular stalk is part of neurohypophysis.
True
Unlike sinusoids, (X) arteries originate (above/below/within) adrenal cortex capsule and have which course?
X = medullary (or long cortical)
Below;
Deliver blood directly to medullary cap’s without picking up hormones from cortex
Which region(s) of adrenal gland contains lipid droplets?
All regions of cortex (but not medulla)
Adrenal (medulla/cortex) contains cells high in sER. And rER?
Cortex (all regions);
Medulla high in rER
