Questions
1. C-cells in the thyroid gland are derived from:
a Neural crest.
b Ultimobronchial body.
c Thyroglossal duct.
d Fourth pharyngeal pouch.
2. Which of the following statements regarding venous drainage of the thyroid gland is incorrect?
a The middle thyroid vein drains into the brachiocephalic vein.
b The superior thyroid vein drains into the internal jugular vein.
c The inferior thyroid vein drains into the brachiocephalic vein.
d None of the above.
3. The superior thyroid artery is closely related to the following nerve:
a Recurrent laryngeal nerve.
b Hypoglossal nerve.
c External laryngeal nerve.
d Glossopharyngeal nerve.
4. The recurrent laryngeal nerve is closely related to:
a Superior thyroid artery.
b Inferior thyroid artery.
c Thyrocervical trunk.
d Middle thyroid artery.
5. The most common location of a thyroglossal cyst is:
a Subhyoid.
b Over the thyroid cartilage.
c Suprahyoid.
d Sublingual.
6. The complications associated with thyroglossal cyst include all of the following, except:
a Abscess formation.
b Thyroglossal sinus/fistula.
,c Malignancy.
d Thyrotoxicosis.
, 7. Graves’s disease is due to:
a Hypersecretion of thyroid stimulating hormone.
b Abnormal thyroid stimulating antibodies.
c Anti-mitochondrial antibodies.
d Increased secretion of thyroxine.
8. Which of the following features is not associated with primary thyrotoxicosis?
a Goitre is diffuse and vascular.
b Exophthalmos is more common.
c Cardiac failure is more common.
d None of the above.
9. The treatment of choice for a 35-year-old pregnant female with thyrotoxicosis is:
a Radioactive iodine.
b Anti-thyroid drugs.
c Surgery.
d β-blocker.
10. The preferred treatment of choice in a child with thyrotoxicosis is:
a Radioactive iodine.
b Subtotal thyroidectomy.
c Total thyroidectomy.
d Anti-thyroid drugs.
11. The most common cause of hypercalcaemic crisis is:
a Carcinoma of the breast.
b Parathyroid hyperplasia.
c Parathyroid adenoma.
d Paget’s disease.
12. The anti-thyroid drug of choice in the pre-operative preparation of a thyrotoxicosis patient is:
a Lugol’s iodine.
b Carbimazole.
c Propanolol.
d Propylthiouracil.
13. Iodide alone is not used in the pre-operative preparation of a thyrotoxicosis patient because:
a It can make thyrotoxicosis worse.
b It can increase the vascularity of goitre.
c Rapid control of thyrotoxicosis is not possible.