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WorksheetsThyroid Gland- Linker Session
Total questions: 10
Worksheet time: 20mins
The hormone involved in short loop negative feedback in thyroid hormone regulation is:
TRH
TSH
T3/T4
TBG
The following are true about a Thyroid Dwarf EXCEPT
Mental retardation is a common feature
Skeletal growth is characteristically more inhibited than soft tissue growth
Treatment at any time with adequate iodine/thyroxine usually causes normal return of physical growth
Treatment at any time with adequate iodine/thyroxine usually causes reversal of mental retardation
The phenomenon by which there is an increase in the number of receptors due to deficiency of the hormone is called
Downregulation
Attenuation
Hypersensitization
Upregulation
A patient presents with a large goitre causing dyspnoea and dysphagia. Which anatomical feature of the thyroid gland’s capsules primarily determines the direction of its enlargement?
The true capsule firmly attaches to the prevertebral fascia, guiding downward enlargement of the thyroid gland.
The false capsule is thick anteriorly, preventing forward expansion of the thyroid gland.
The false capsule is thin posteriorly, allowing the thyroid gland to expand backwards into the retro tracheal space.
The true capsule is continuous with the carotid sheath, limiting lateral expansion of the thyroid gland.
A 60-year-old man presents with progressive difficulty in breathing and swallowing. Examination reveals a large thyroid mass causing retrosternal extension. What anatomical factor explains why the thyroid gland is more likely to extend downwards into the mediastinum rather than upwards?
Upward expansion is limited by the attachment of the Pretracheal fascia to the thyroid cartilage and hyoid bone
The thyroid gland is more firmly attached to the trachea than the larynx, allowing downward movement
There is no anatomical barrier to upward movement of the thyroid gland
The thyroid gland’s false capsule is continuous with the prevertebral fascia, guiding downward extension
A 45-year-old woman undergoes a total thyroidectomy for thyroid carcinoma. In the postoperative period, she develops hoarseness of voice and aspiration of liquids. Which of the following structures most likely sustained injury during surgery, considering its intimate relationship with the posterior border of the thyroid gland?
External laryngeal nerve
Recurrent laryngeal nerve
Sympathetic trunk
Superior laryngeal nerve
1. A patient came to the OPD with a midline swelling in the neck. The swelling moves upwards with swallowing. The swelling was diagnosed to be a thyroid swelling because
a. The thyroid gland is attached to the hyoid bone and laryngeal cartilages via the Pretracheal fascia, causing it to move during swallowing.
The thyroid gland is closely related to the sternocleidomastoid muscle, which contracts during swallowing.
The thyroid gland has a rich blood supply, and blood vessels move during swallowing.
The thyroid gland’s capsule is continuous with the prevertebral fascia, which is displaced during swallowing
