22. Which of the following cells have no granules:
Anonymous Quiz
6%
a. acidophils of pars distalis.
57%
c. cells of adrenal cortex.
6%
b. basophils of pars distalis.
31%
d. chromaffin cells.
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23. The main ultrastructural feature of the zona fasciculata cells is the
presence of:
presence of:
Anonymous Quiz
74%
a. smooth endoplasmic reticulum.
13%
b. rough endoplasmic reticulum.
3%
c. few mitochondria.
10%
d. long cilia.
25. The following statement is true about thyroid follicles:
Anonymous Quiz
3%
a. Lined with squamous cells.
13%
b. Form T3, T4 & TSH.
72%
c. Surrounded by fenestrated capillaries.
13%
d. Lined with parafollicular cells which store calcitonin in the colloid.
26. The adrenal cortex secretes:
Anonymous Quiz
0%
a. calcitonin.
79%
b. mineralocorticoids.
10%
c. catecholamines.
12%
d. ACTH.
27. The cells of the adrenal cortex:
Anonymous Quiz
7%
a. are ectodermal.
10%
b. are rich in rough endoplasmic reticulum.
78%
c. produce steroid hormones.
5%
d. produce noradrenaline.
28. The spongiocytes are seen in:
Anonymous Quiz
84%
a. supra renal cortex.
11%
b. supra renal medulla.
3%
c. pars distalis.
3%
d. pars nervosa.
29. Large lipid droplets are seen in:
Anonymous Quiz
5%
a. catecholamines producing cells.
95%
b. zona fasiculata of the adrenal cortex.
0%
c. pineal body.
0%
d. somatotrophs of pars distalis.
30. The adrenal medulla contains:
Anonymous Quiz
8%
a. Chief cells.
83%
c. Sympathetic nerve cells.
10%
b. Steroid secreting cells.
0%
d. Androgen secreting cells.
_The following atropine substitute is useful in the treatment of
parkinsonism:
parkinsonism:
Anonymous Quiz
18%
Pirenzepine
24%
Hyoscine
3%
Homatropine
55%
Benzatropine
- Each parasympathomimetic is paired with an appropriate
THERAPEUTIC USE EXCEPT:
THERAPEUTIC USE EXCEPT:
Anonymous Quiz
9%
a. Physostigmine - eye drops in glaucoma
19%
b. Neostigmine postoperative retention of urine
9%
c. Edrophonium - diagnosis of myasthenia gravis
63%
d. Parathion - organophosphorus poisoning
4- Which of the following is a clinical use of neostigmine?
Anonymous Quiz
89%
a. Treatment of post-operative paralytic ileus
3%
b. Treatment of bronchial asthma
0%
c. Treatment of nocturnal enuresis
8%
d. Treatment of essential Hypertension
Treatment of acute organophosphorus poisoning includes all the
following EXCEPT:
following EXCEPT:
Anonymous Quiz
7%
Paralidoxime
82%
Methacholine
11%
Diazepam
0%
Gastric lavage
Drug that reactivates choline esterase enzyme in early toxicity by
organophosphorus compounds is:
organophosphorus compounds is:
Anonymous Quiz
10%
Diazepam
74%
Obidoxime
6%
Atropine
10%
Pilocarpine
The following are target endpoints for atropine therapy in organic
phosphate poisoning EXCEPT:
phosphate poisoning EXCEPT:
Anonymous Quiz
70%
a. Bradycardia < 60 beats / minute
10%
Dry axilla and muoth
10%
Mydriasis
10%
SBP>80 mmHg
Choose the incorrect statement about M2 receptors
Anonymous Quiz
24%
Main site is the heart
6%
Present presynaptically on the cholinergic neurons
45%
They are Gs coupled
18%
They decrease intracellular cAMP
6%
Open k channels causing hyperpolarization
Atropine has the following pharmacological effects EXEPT:
Anonymous Quiz
3%
a. Decreases gastric acid secretion
13%
b. Has a mydriatic effect
79%
c. Produces bronchoconstriction
5%
d. Increases the heart rate
Hyoscine differs from atropine in that it:
Anonymous Quiz
61%
a. Exerts depressant effects on the CNS at relatively low doses
7%
b. Contraindicated in thyrotoxicosis
25%
c. Is longer acting
7%
d. Has weaker antimotion sickness activity
Rivastigmine is anticholinesterase used in the treatmnet of
Anonymous Quiz
0%
Glaucoma
75%
Alzheimer disease
13%
Bronchial asthma
13%
Myasthenia gravis
Atropine produces all the following actions on the eye except
Anonymous Quiz
9%
Increase IOP
15%
passive mydriasis
12%
Cycloplegia
65%
Effect ends after 7 to 10 hrs