Neck Practice Questions

Q: Blood supply of the esophagus in the neck is by

Inferior thyroid artery. The **inferior thyroid artery**, a branch of the **thyrocervical trunk**, is the primary blood supply to the cervical esophagus [1]. It provides numerous small branches that vascularize the upper part of the esophagus. *Ascending cervical artery* - The **ascending cervical artery** primarily supplies muscles in the neck and spinal cord, not the esophagus. It branches from the **inferior thyroid artery** but has a distinct distribution [1]. *Mediastinal artery* - **Mediastinal artery** is not a standard named vessel supplying the esophagus. *Superior thyroid artery* - The **superior thyroid artery** primarily supplies the **thyroid gland** and adjacent larynx and pharynx. It originates from the **external carotid artery** and does not supply the esophagus.

Q: What primarily prevents the upward movement of the thyroid gland?

Berry ligament. ***Berry ligament*** - The **Berry ligament (suspensory ligament of Berry)** is a thickening of the **pretracheal fascia** that firmly attaches the thyroid gland to the cricoid cartilage and the first two tracheal rings [1]. - This strong anatomical connection anchors the thyroid gland in place, preventing its excessive upward movement during swallowing [1]. *Pretracheal fascia* - The **pretracheal fascia** encloses the thyroid gland and extends from the hyoid bone to the thorax, investing the trachea and esophagus. - While it surrounds and offers some support to the thyroid, it is the specialized thickening known as the **Berry ligament** that provides the critical anchoring function against upward movement [1]. *Sternothyroid muscle* - The **sternothyroid muscle** is an infrahyoid muscle that depresses the thyroid cartilage and larynx. - Its primary action is to lower the larynx and hyoid bone, not to prevent the upward movement of the thyroid gland itself. *Investing layer of the deep cervical fascia* - The **investing layer of the deep cervical fascia** completely encircles the neck, enclosing the trapezius and sternocleidomastoid muscles and providing a general boundary for the neck contents. - It does not directly attach to the thyroid gland in a manner that would specifically restrict its upward movement; this function is performed by the Berry ligament [1].

Q: Retropharyngeal space extends up to which of the following levels?

Base of skull to bifurcation of trachea. ***Base of skull to bifurcation of trachea*** - The **retropharyngeal space** extends superiorly from the **base of the skull**. - Inferiorly, it reaches the level of the **bifurcation of the trachea (T4-T5 vertebral levels)**, where the alar fascia fuses with the visceral fascia. *Base of skull to C6 vertebra* - This description is too restrictive; the retropharyngeal space extends beyond the **C6 vertebra**. - While significant structures are at C6 (e.g., cricoid cartilage), it is not the inferior limit of this space. *Base of skull to the level of diaphragm* - This is an overestimation of the extent of the **retropharyngeal space**. - The space terminates well above the **diaphragm**, near the tracheal bifurcation. *Base of skull to cricoid cartilage* - The **cricoid cartilage** is located at the level of **C6**, which is an insufficient inferior limit for the **retropharyngeal space**. - The space descends further into the mediastinum.

Q: All of the following structures are associated with the laryngeal sinus of Morgagni (laryngeal ventricle) except which one?

Stylopharyngeus. ⚠️ **CRITICAL ISSUE: This question is fundamentally flawed and should be reviewed for deletion or complete reconstruction.** **Problem:** ALL four options are equally unassociated with the laryngeal ventricle (sinus of Morgagni). The laryngeal ventricle is an internal laryngeal structure bounded by the vestibular and vocal folds. None of the listed structures (auditory tube, levator veli palatini, stylopharyngeus, ascending palatine artery) have any anatomical association with the laryngeal ventricle - they are all pharyngeal or palatine structures. **Structures actually associated with laryngeal ventricle:** - Laryngeal saccule (extends from ventricle) - Vestibular fold (superior boundary) - Vocal fold (inferior boundary) - Thyroarytenoid muscle - Laryngeal mucous glands ***Stylopharyngeus*** (Currently marked correct) - Pharyngeal muscle originating from styloid process - NOT associated with laryngeal ventricle *Auditory tube* - Nasopharyngeal structure connecting to middle ear - NOT associated with laryngeal ventricle *Levator veli palatini* - Soft palate muscle - NOT associated with laryngeal ventricle *Ascending palatine artery* - Supplies soft palate and tonsils - NOT associated with laryngeal ventricle **Recommendation:** This question requires complete reconstruction with anatomically appropriate options.

Q: The arterial supply of the submandibular gland is

Facial artery. ***Facial artery*** - The **facial artery** gives off several branches that supply the submandibular gland, including the glandular branches. - It arises from the **external carotid artery** and reaches the gland by looping over the posterior belly of the digastric muscle. *Lingual artery* - The **lingual artery** primarily supplies the tongue and floor of the mouth. - While in close proximity, it does not directly provide the main arterial supply to the submandibular gland. *External carotid artery* - The **external carotid artery** is the parent vessel from which the facial artery (and lingual artery) originate. - It does not directly supply the submandibular gland; rather, its branches do. *Sublingual arteries* - **Sublingual arteries** are branches of the lingual artery and primarily supply the sublingual gland and floor of the mouth. - They do not contribute significantly to the arterial supply of the submandibular gland.

Q: Which of the following muscles elevates the larynx?

Thyrohyoid. ***Thyrohyoid*** - The **thyrohyoid muscle** connects the **thyroid cartilage** of the larynx to the **hyoid bone**. - Its contraction pulls the thyroid cartilage superiorly towards the hyoid bone, thereby **elevating the entire larynx**. *Sternothyroid* - This muscle extends from the **sternum** to the **thyroid cartilage**. - Its primary action is to **depress the larynx** by pulling the thyroid cartilage inferiorly. *Sternohyoid* - The **sternohyoid muscle** originates from the **sternum** and inserts onto the **hyoid bone**. - Its function is to **depress the hyoid bone** and, consequently, the larynx during swallowing or vocalization. *Omohyoid* - The **omohyoid muscle** has superior and inferior bellies connecting the **scapula** to the **hyoid bone**. - Its main roles are to **depress the hyoid bone** and retract it, rather than elevating the larynx.

Question 1

Blood supply of the esophagus in the neck is by

Accepted Answer

Inferior thyroid artery

Answer

Mediastinal artery

Answer

Ascending cervical artery

Answer

Superior thyroid artery

Question 2

What primarily prevents the upward movement of the thyroid gland?

Accepted Answer

Berry ligament

Answer

Pretracheal fascia

Answer

Sternothyroid muscle

Answer

Investing layer of the deep cervical fascia

Question 3

Retropharyngeal space extends up to which of the following levels?

Accepted Answer

Base of skull to bifurcation of trachea

Answer

Base of skull to C6 vertebra

Answer

Base of skull to the level of diaphragm

Answer

Base of skull to cricoid cartilage

Question 4

All of the following structures are associated with the laryngeal sinus of Morgagni (laryngeal ventricle) except which one?

Accepted Answer

Stylopharyngeus

Answer

Auditory tube

Answer

Levator veli palatini

Answer

Ascending palatine artery

Question 5

The arterial supply of the submandibular gland is

Accepted Answer

Facial artery

Answer

Lingual artery

Answer

External carotid artery

Answer

Sublingual arteries

Question 6

Which of the following muscles elevates the larynx?

Accepted Answer

Thyrohyoid

Answer

Sternothyroid

Answer

Sternohyoid

Answer

Omohyoid

Neck — MCQs

Neck — MCQs

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