Forwarded from Study Partner 196👨🏻⚕️👩🏻⚕️ (. .)
Forwarded from Study Partner 196👨🏻⚕️👩🏻⚕️ (. .)
Thyroglobulin is stored in
Anonymous Quiz
100%
the lumen of the follicles
0%
Golgi apparatus.
0%
lysosomes
0%
mitochondria
Forwarded from Study Partner 196👨🏻⚕️👩🏻⚕️ (. .)
In follicular cells of the thyroid gland lysosomes are essential for
Anonymous Quiz
5%
iodination of thyroglobulin
5%
Synthesis of thyroglobulin
90%
hydrolysis of thyroglobulin into T3 + T4
0%
release of calcitonin
Forwarded from Study Partner 196👨🏻⚕️👩🏻⚕️ (. .)
The colloid in thyroid follicles
Anonymous Quiz
0%
is seen only by EM
0%
usually is basophilic
7%
contains calcitonin
93%
contains thyroglobulin
Forwarded from Study Partner 196👨🏻⚕️👩🏻⚕️ (. .)
The main ultrastructural features of the thyroid follicular cell is presence of
Anonymous Quiz
8%
rough and smooth endoplasmic reticulum
79%
rough endoplasmic reticulum and lysosomes
0%
few mitochondria
13%
basal secretory vesicles
Forwarded from Study Partner 196👨🏻⚕️👩🏻⚕️ (. .)
Thyroid interfollicular cells secrete
Anonymous Quiz
7%
parathyroid hormone
38%
thyroxin hormone
48%
calcitonin hormone
7%
calcium
Forwarded from Study Partner 196👨🏻⚕️👩🏻⚕️ (. .)
lodine is essential for the synthesis of
Anonymous Quiz
5%
parathormone
0%
calcitonin
95%
thyroxin
0%
cortisol
Forwarded from Study Partner 196👨🏻⚕️👩🏻⚕️ (. .)
Normal parathyroid glands of adults possess
Anonymous Quiz
76%
oxyphil cells
11%
chromaffin cells
0%
basophil cells
13%
parafollicular cells
Forwarded from Study Partner 196👨🏻⚕️👩🏻⚕️ (. .)
Forwarded from Study Partner 196👨🏻⚕️👩🏻⚕️ (. .)
Oxyphil cells of the parathyroid gland are characterized by
Anonymous Quiz
78%
increase in number with age.
8%
rich in rER& Golgi apparatus.
8%
they represent degenerated chief cells
6%
secrete parathyroid hormone
Forwarded from Study Partner 196👨🏻⚕️👩🏻⚕️ (. .)
Which is true about oxyphil cells
Anonymous Quiz
92%
are deeply acidophilic
0%
contain numerous rER
5%
are more numerous than chief cells
3%
smaller than chief cells
Forwarded from Study Partner 196👨🏻⚕️👩🏻⚕️ (. .)
Forwarded from Study Partner 196👨🏻⚕️👩🏻⚕️ (. .)
Oxyphil cells are present in the
Anonymous Quiz
98%
parathyroid gland
0%
adenohypophysis
0%
neurohypophysis
3%
pineal gland
Forwarded from Study Partner 196👨🏻⚕️👩🏻⚕️ (. .)
Oxyphil cells of the parathyroid gland are acidophilic due to the presence of many:
Anonymous Quiz
25%
sER
0%
rER
0%
lysosomes
75%
mitochondria
Forwarded from Study Partner 196👨🏻⚕️👩🏻⚕️ (. .)
lodination of the thyroglobulin occurs:
Anonymous Quiz
78%
extracellular in the follicular lumen
19%
intracellular inside the follicular cell
3%
ntercellular
0%
inside the capillaryi
Forwarded from Study Partner 196👨🏻⚕️👩🏻⚕️ (. .)
The secretion of parathyroid cells is regulated by:
Anonymous Quiz
5%
Thyroid stimulating hormone
95%
Blood calcium level.
0%
Corticosteroid level
0%
T3 & T4
Forwarded from Study Partner 196👨🏻⚕️👩🏻⚕️ (. .)
Pinealocytes of the pineal body
Anonymous Quiz
2%
produce melatonin only.
10%
are astrocyte-like cells
7%
are called brain sand
81%
produce serotonin & melatonin
Forwarded from Study Partner 196👨🏻⚕️👩🏻⚕️ (. .)
Forwarded from Study Partner 196👨🏻⚕️👩🏻⚕️ (. .)
Melatonin is secreted from
Anonymous Quiz
7%
chromaffin cells
0%
astroglia cells
5%
corticotrophs
89%
pinealocytes
Forwarded from Study Partner 196👨🏻⚕️👩🏻⚕️ (. .)
Pinealocytes
Anonymous Quiz
0%
secrete melatonin only
0%
secrete serotonin only
5%
appear as brain sand
95%
secrete melatonin and serotonin
Forwarded from Study Partner 196👨🏻⚕️👩🏻⚕️ (. .)