Thyroid Gland – Neck

by Craig Canby, PhD

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    Welcome to this presentation on the neck part II. During this presentation, we’re going to cover three subject areas. We’re going to begin by looking at the thyroid gland. Secondly, we'll visit the stellate ganglion. Then lastly, we’ll visit the thoracic outlet. As we move through each of these three topical areas, we’ll discuss clinical correlations. So here we begin with the thyroid. What I want you to understand here at the beginning is some really basic anatomy. First, the thyroid is made up of lobes. Here, we see the right lobe. Next, we have the left lobe. Lastly, both lobes are connected by an isthmus. This particular slide shows a very important clinical relationship or anatomic relationship. This is the relationship of the thyroid gland to the recurrent laryngeal nerves. Each laryngeal nerve here is the right recurrent laryngeal nerve. It’s lying within the tracheoesophageal groove. We see that groove between the trachea and the esophagus which lies posteriorly. We also see the same relationship. However, it’s unlabelled on the opposite side. So here is your left recurrent laryngeal nerve. Again, it travels in the tracheoesophageal groove on that particular slide. Clinically, these are important during a thyroidectomy. The surgeon has to carefully identify these nerves and preserve them so they are not injured during the removal of the thyroid gland. We’ll also demonstrate another clinical correlation of the recurrence when we talk about thyroid goiter. Here are some important aspects about the recurrent laryngeal nerves. Both recurrent laryngeal nerves are branches of the vagus nerve. They will supply all the intrinsic laryngeal muscles with the exception of the cricothyroid. They are called recurrent as they come off the vagus nerve and then travel back upwards to either side of the trachea and ultimately, to their destination of the...

    About the Lecture

    The lecture Thyroid Gland – Neck by Craig Canby, PhD is from the course Head and Neck Anatomy. It contains the following chapters:

    • Tyroid Gland
    • Thyroid Gland – Goiter
    • Thyroid Gland – Technetium 99m Pertechnetate Scan

    Included Quiz Questions

    1. Intrinsic Laryngeal Muscles
    2. Extrinsic Laryngeal Muscles
    3. Smooth Esophageal Muscles
    4. Extrinsic Pharyngeal Muscles
    5. Intrinsic Pharyngeal Muscles
    1. …anterior to the trachea.
    2. …anterior to the esophagus.
    3. …anterior to the vertebra.
    4. …posterior to the esophagus.
    5. …posterior to the trachea.
    1. Recurrent Laryngeal Nerve
    2. Vagus Nerve
    3. Inferior Thyroid Vein
    4. Internal Jugular Vein
    5. Common Carotid Artery
    1. Increased T3, T4 production
    2. Usually benign
    3. T99 scan shows less than normal activity of thyroid gland.
    4. Odds of being malignant are greater than Hot Nodules.
    5. Nonfunctional
    1. Hoarse voice
    2. Hyperparathyroidism
    3. Laryngeal obstruction
    4. Vocal cord Paralysis
    5. Cough

    Author of lecture Thyroid Gland – Neck

     Craig Canby, PhD

    Craig Canby, PhD

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    introduction to thyroid
    By Tara B. on 06. April 2017 for Thyroid Gland – Neck

    clear and concise introduction to the thyroid gland and thyroidectomy relative to the fascial spaces

    Very general
    By Mazen N. on 27. March 2017 for Thyroid Gland – Neck

    it is extremely general and does not provide the important notes about the gland like its blood suplly, innervation and details about what could be damaged if a thyrodectomy was preformed wrongly.