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Anatomy of the Thyroid Gland

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Questions and Answers

What is the average weight of the thyroid gland in an adult?

15-20 g
25-30 g (correct)
35-40 g
45-50 g

Where is the isthmus of the thyroid gland located?

At the level of IV-V cartilage of the trachea
At the level of III-IV cartilage of the trachea
At the level of V-VI cartilage of the trachea
At the level of II-III cartilage of the trachea (correct)

Which part of the pharynx adheres to the posterolateral surface of the thyroid gland?

Laryngeal part (correct)
Nasopharynx
Oropharynx
Hypopharynx

What is the longitudinal size of each lobe of the thyroid gland?

6 cm (C) Signup and view all the answers

In how many percentage of cases is a pyramidal lobe present in the thyroid gland?

30-35% (C) Signup and view all the answers

Where is the lower pole of each lobe of the thyroid gland located?

At the level of V-VI cartilage of the trachea (C) Signup and view all the answers

What is the main hormone produced by the thyroid gland?

Triiodothyronine (C) Signup and view all the answers

What is the function of thyrocalcitonin produced by the C-cells in the thyroid gland?

Decrease blood calcium levels (D) Signup and view all the answers

What is the composition of the colloid present in the follicles of the thyroid gland?

Thyroglobulin (A) Signup and view all the answers

What is the primary function of triiodothyronine and thyroxine produced by the thyroid gland?

Enhance metabolic processes (B) Signup and view all the answers

What are the consequences of hypofunction of the thyroid gland in childhood?

Development of myxedema or cretinism (B) Signup and view all the answers

What is the role of iodothyroglobulin in the thyroid gland?

Aid in hormone synthesis (D) Signup and view all the answers