thyroid

C cells populate which part of the lateral lobe of the thyroid ?

a- upper one-third of the lateral lobe of thyroid 
b- middle one-third of the lateral lobe of thyroid
c- lower one-third of the lateral lobe of the thyroid
d- distributed equally all over the lateral lobe of the thyroid 

answer : b . C cells populate the middle one-third of the lateral lobe of the thyroid .
( typically found scattered within thyroid follicles , inside the basal lamina but not reaching the follicle lumen .)

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what are the two main arteries that supply the thyroid ?

answer : superior and inferior thyroid arteries . superior thyroid artery is a branch of the external carotid artery and the inferior thyroid artery is branch of the thyrocervical trunk .

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hurthle cells

hurthle cells are seen in ?

a- hashimoto’s thyroiditis
b- follicular cell carcinoma
c- hurthle cell thyroid adenoma 
d- all the above

answer is d . all the above .

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dysthyroid status

characteristic eye sign in dysthyroid status ?

a- exopthalmos
b- ptosis
c- optic neuropathy
d- myopathy

answer : a . exopthalmos .

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duodenal ulcer

which of the following factors contribute to the development of duodenal ulcer ?

a- Iodine 131
b- Iodine 125
c- Technitium 99
d- Phosphorus 32 

answer : a . iodine 131 .

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thyroid

which of the following is/are used in the management of thyroid malignancy?

a- Iodine 131
b- Iodine 125
c- Technitium 99
d- Phosphorus 32
e- strontium 

answer is a . Iodine 131 .

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thyroid

medullary carcinoma of thyroid arises from ?

a- parafollicular cells
b- cells lining the acini
c- capsule of thyroid
d- stroma of the gland 

answer : a . parafollicular cells .

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