Thyroglossal Duct

“What is the thyroglossal duct? A detailed question and answers guide”

Question 1. Thyroglossal duct
Answer:

The thyroid gland develops from a median endodermal thyroid diverticulum
This grows down in front of the neck from the floor of the primitive pharynx
The lower end of the diverticulum enlarges to form the gland
The rest of the diverticulum remains narrow & forms thyroglossal duct
Most of it soon disappears
The position of the upper end is marked by the foramen caecum of the tongue
The lower end often persists as the pyramidal lobe

Question 2. Stylohyoid ligament.
Answer:

It extends from the tip of the styloid process to the lesser cornua of the hyoid bone
It is derived from second branchial arch

“Understanding the thyroglossal duct through FAQs: Composition, functions, and uses explained”

Question 3. Recurrent laryngeal nerve (or) Recurrent laryngeal nerve of right side (or) Recurrent laryngeal nerve in the neck
Answer:

1. Right recurrent laryngeal nerve:

It arises from the Vagus in front of the right subclavian artery It reaches through tracheooesophageal groove
It is related to the inferior thyroid artery
It enters the larynx behind the cricothyroid joint

“Common challenges in mastering thyroglossal duct notes effectively: FAQs provided”

2. left recurrent laryngeal nerve:

It arises from the vagus in the thorax
It crosses the left side of the arch of the aorta It is present posterior to the inferior thyroid artery

Structures supplied by it:

“Importance of studying the thyroglossal duct for medical students: Questions explained”

Question 4. Jugulodigastric lymph node.
Answer:

It is the member of the anterosuperior group of the deep cervical lymph nodes
It lies below the posterior belly of the digastric, between the angle of the mandible & the anterior border of sternocleidomastoid in the triangle bounded by the posterior belly of the digastric, the facial vein & the internal jugular vein
It is main node draining the tonsil

Reader Interactions