NEETZoologyChemical Coordination and Integration
What is the composition of each thyroid follicle?
Options
- AFollicular cells and a cavity
- BStromal tissues and a cavity
- CFollicular cells and stromal tissues
- DA cavity and an isthmus
Correct answer
A. Follicular cells and a cavity
Step-by-step solution
The thyroid gland is composed of two lobes which are located on either side of the trachea (Figure 19.3 a). Both the lobes are interconnected with a thin flap of connective tissue called isthmus. The thyroid gland is composed of follicles and stromal tissues. Each thyroid follicle is composed of follicular cells, enclosing a cavity . These follicular cells synthesise two hormones,tetraiodothyronine or thyroxine (T4) and triiodothyronine (T3). Thyroid hormones play an important role in the regulation of the basal me