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Question

Lobes of the thyroid gland are connected by ______________

A
parafollicular cells
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B
follicular cells
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C
isthmus
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D
none of the above
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Solution

The correct option is C isthmus
The thyroid gland is located in the neck in front of the windpipe. It consists of two lobes which are located on either side of the trachea (windpipe). These two lobes are connected by a structure called the isthmus. The isthmus is a flap like connective tissue which forms a bridge between the two lobes of the thyroid gland.
The follicular and parafollicular cells are two types of cells present in the thyroid gland. Follicular cells secrete thyroxine (T4) and triiodothyronine (T3). Parafollicular cells secrete the hormone calcitonin.

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