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Questions and Answers
Which muscle delimits the thyroid gland anteriorly?
Which muscle delimits the thyroid gland anteriorly?
- Platysma muscle
- Subhyoidian muscle (correct)
- Sternocleidomastoid muscle
- Omohyoid muscle
What is the vascular supply to the thyroid gland?
What is the vascular supply to the thyroid gland?
- Superior thyroid vein
- Internal jugular vein
- Inferior thyroid artery (correct)
- External carotid artery
Which nerve has a close relation with the thyroid gland?
Which nerve has a close relation with the thyroid gland?
- Accessory nerve
- Facial nerve
- Glossopharyngeal nerve
- Vagus nerve (correct)
What is the lymphatic drainage of the thyroid gland?
What is the lymphatic drainage of the thyroid gland?
Which condition is characterized by an overactive thyroid gland?
Which condition is characterized by an overactive thyroid gland?
Which muscle delimits the thyroid gland anteriorly?
Which muscle delimits the thyroid gland anteriorly?
What is the arterial blood supply to the thyroid gland?
What is the arterial blood supply to the thyroid gland?
Which nerve has a close relation with the thyroid gland?
Which nerve has a close relation with the thyroid gland?
Which lymph nodes are associated with the thyroid gland?
Which lymph nodes are associated with the thyroid gland?
Which anatomical structure is located posteriorly to the thyroid gland?
Which anatomical structure is located posteriorly to the thyroid gland?
Which muscle delimits the thyroid gland posteriorly?
Which muscle delimits the thyroid gland posteriorly?
Which artery is responsible for the arterial supply to the thyroid gland?
Which artery is responsible for the arterial supply to the thyroid gland?
Which lymph nodes are involved in the lymphatic drainage of the thyroid gland?
Which lymph nodes are involved in the lymphatic drainage of the thyroid gland?
Which nerve is responsible for the innervation of the thyroid gland?
Which nerve is responsible for the innervation of the thyroid gland?
Which condition is characterized by the enlargement of the thyroid gland?
Which condition is characterized by the enlargement of the thyroid gland?
Study Notes
Thyroid Gland Anatomy and Physiology
- Anteriorly, the thyroid gland is delimited by the sternohyoid and sternothyroid muscles.
- The vascular supply includes primarily the superior thyroid artery (from the external carotid artery) and the inferior thyroid artery (from the subclavian artery).
- Nerves closely related to the thyroid gland include the recurrent laryngeal nerve and sometimes the superior laryngeal nerve.
Lymphatic Drainage
- Lymphatic drainage primarily occurs through prelaryngeal, pretracheal, and paratracheal lymph nodes.
- The jugular lymph nodes are associated with the drainage system from the thyroid.
Anatomical Relations
- Posteriorly, the thyroid gland is located near the trachea and esophagus.
- The cricoid cartilage is situated superiorly to the thyroid gland, providing a landmark for anatomical orientation.
Thyroid Conditions
- Hyperthyroidism is characterized by an overactive thyroid gland, leading to increased levels of thyroid hormones.
- Goiter is the condition involving the enlargement of the thyroid gland, which can occur in various thyroid disorders.
Summary of Innervation
- The parasympathetic innervation of the thyroid gland is primarily via the vagus nerve.
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Description
Test your knowledge of the surgical semiology of the thyroid gland with this quiz. Explore anatomical considerations, including its location in the anterior cervical region and surrounding structures. Identify key muscles and landmarks relevant to thyroid surgery.
