The upward extension of thyroid swelling is prevented by which of the following structure attached to thyroid cailage
Sternothyroid
Pretracheal fascia
Ligament of berry
Thyrohyoid membrane
Pretacheal fasciaprevents upward extension of thyroid swelling. It goes antero-lateral to trachea and continues posteriorly around oesophagus and as pharynx as buccopharyngeal fascia. It encloses: Trachea and oesophagus Thyroid gland Ant. Neck muscles
NEET Jan 2020