M

M.C.Q Endocrine systemBy: Prof Dr Somaya

1- All the following are pure endocrine glands except : a- pituitary gland b- adrenal gland c-pineal gland d- pancreas

2- The master of the endocrine glands is : a- pituitary gland b- adrenal gland c- thyroid gland d- parathyroid gland

3- All the following are criteria of chromophils of pars distalis except : a- They form 50% of the cells of pars distalis b-They are larger than chromophobes c- They have few granules seen only by E.M d- They are formed of acidophilis and basophilis

4- Somatotrophs can be stained by : a- Orcein stain b- Toludine blue c- Orange G stain d- Erythrocin stain.

5- Somatotrophs secrete : a- Melatonin b- Growth hormone c- Calcitonin d- Prolactin

6- Mammotrophs secrete :

a- Melatonin b- Growth hormone c- Calcitonin d- Prolactin

7- All the following are types of basophils except : a- Corticotrophs b- Gonadotrophs c- Mammotrophs d- Thyrotrophs

8- Gonadotrophs secrete : a- Growth hormone b- FSH & LH c- ACTH d- Lactogenic hormone

9- Thyrotrophs secrete : a- Thyroid stimulating hormone b- T3 &T4 c- Calcitonin d- Vasopressin

10- Mammotrophs can be stained by : a- Orcein stain b- Sudan III stain. c- Orange G stain d- Erythrocin stain

11) Thyrotrophs can be stained by:a-Orcein stainb-Orange G stainc-PASd-Erythrocin stain

12) Chromophobes of the ant.pitutary are considered as:a-Nerve cellsb-Neuroglia cellsc-Stem cellsd-Hormone storing cells

13) Para follicular cells of the thyroid gland secretea-T3 &T4b-Thyroid stimulating hormonec-Oxytocin d-calcitonin14) A patient is complaining of spastic contraction of the skeletal muscles(tetany)-this condition is due to:a-Hypofunction of thyroid glandb-Hypofunction of parathyroid glandc-hyperfunction of parathyroid glandd-hyperfunction of thyroid gland

15) The pituitary gland is the master of the endocrine glands because:a-It is the largest endocrine glandb-It secretes many hormonesc-It secretes hormones which control the activity of other glandsd-It is present inside the skull

16) Chromophilis of the anterior pituitary include:a-Chromaffin cells and Ganglion cellsb-Acidophils and basophilsc-Nerve cells and neuroglia cellsd-Nerve cells and Herring bodies

17) Acidophilis of the anterior pituitary includes:a. Somatotrophs & mammotrophs.b. Gonadotrophs & corticotrophs.c-Thyrotrophs & corticotrophs.d- Somatotrophs & thyrotrophs.

18) Pars nervosa of the pituitary gland contains all the following structures except:a- Nerve cells.b- Nerve fibers.c- Herring bodies.d- Pituicytes.

19) Herring bodies are :a- Degenerated nerve cells.b- Degenerated nerve fibers.c- Accumulated secretion of anterior pituitary.d- Accumulated secretion of hypothalamus.

20) The supraoptic & paraventricular nuclei of hypothalamus secrete:a- ADH & oxytocin.b- ADH & aldosterone.c-Oxytocin & ACTH. d- ADH & ACTH21) Zona glomerulosa secretes:a- Adrenaline & nor adrenaline.b- Mineralocorticoids.c- Glucocorticoids.d- Sex hormones.

22) Zona fasiculata secretes:a- Adrenaline & nor adrenaline.b- ACTH.c- Cortisone & cortisole..d- Sex hormones

23) Zona reticularis secretes:a- Adrenaline & nor adrenaline.b- Melatonin..c- Glucocorticoids & androgens..d- ACTH.

24) Adrenal medulla secretes:a- Adrenaline & nor adrenaline.b- Mineralocorticoids.c- Glucocorticoids.d- Sex hormones

25) Pineal body secrete:a- Adrenaline & nor adrenaline.b- Melatonin..c- Glucocorticoids & androgensd- FSH & LH.

26) Adenohypophysis consists of the following parts except:a- Pars distalis.b- Pars tuberalis.c- Pars intermedia.d- Pars nervosa.

27) Neurohypophysis consists of the following parts except: a- Pars tuberalis.b- Pars nervosa.c- Neural stalk.d- Median eminence.

28) Posterior lobe of the pituitary gland includes the following structures except:a- Pars tuberalis.b- Pars nervosa.c- Neural stalk.d- Pars intermedia

29) Corticotrophs secrete :a- ACTH & MSH.b- Calcitonin.c- FSH & LH.d- Cortisone & cortisole.

30) Deficiency of vasopressin leads to :a- Diabetes mellitus.b- Diabetes insipidus.c- Tetany.d- Cretinism.

31) Spongiocytes are the cells of :a- Zona glomerulosa.b- Zona fasiculata.c- Zona reticularis.d- Adrenal medulla.

32) Oxyphil cells of the parathyroid gland are characterized by all the following except:a- They are fewer in number than chief cells.b- They have acidophilic cytoplasm.c- They may be degenerated chief cells.d- They are present in young children below 7 years.

33) The cells in adrenal medulla include:a-Chromaffin cells and Ganglion cells.b-Acidophils and basophils.c-Nerve cells and neuroglia cells.d-Somatotrophs & mammotrophs.

34) Brain sand in X- ray films is a characteristic feature of :a- Pituitary gland.b- Pineal gland.c- Thyroid gland.d- Parathyroid gland.35) ACTH is secreted by :a- Acidophilis of pars distalis.b- Basophiis of pars distalis.c- Suprarenal cortex.d- Supraoptic & paraventricular nuclei.

Best wishesProf Dr Somaya

Some more questions from Dr Noha:

Which of the following cells can be considered one of the acidophils present in the pituitary gland?

AThyrotrophsBGonadotrophsCCorticotropesDLactotropes

Which of the following is secreted by islets of Langerhans:ALysozymeBGastrinCT3 & T4DInsulin. Thyroid follicular cells are different from MOST endocrine cells in that they:AStore their product in the extracellular space.BHave numerous small vesicles.CHave abundant RER.DRespond to a specific pituitary hormone.

Aldosterone is secreted from which layer of the adrenal gland? a) Zona glomerulosa.b) Zona reticularis.c) Zona fasciculata.d) Adrenal medulla.

Which of the following cells contain an extensive amount of sER:

AFibroblastsBSpongiocytesCNeuronsDSmooth muscles

Which statement concerning basophils of the pituitary gland is CORRECT?

AThey outnumber acidophils.BThey include thyrotrope, corticotrope and mammotrope.CThey are larger than acidophils in size.DThey include a group of cells that secrete growth hormone.

Which of the following statements is CORRECT concerning paracrine regulation of pancreatic cells?

ASomatostatin inhibits insulin and glucagon secretion. BInsulin stimulates glucagon secretion. CGlucagon inhibits insulin secretion. DGlucagon inhibits somatostatin secretion.

Best wishesDr Noha A Makhlouf