Parotid Gland Flashcards

Study the parotid gland's location, anatomical relations, duct, facial nerve branches, vascular supply, innervation, and clinical anatomy.

Card 1 of 30Question

What is the parotid gland?

The largest major salivary gland, producing predominantly serous saliva.

In This Section

1. What is the parotid gland?

The largest major salivary gland, producing predominantly serous saliva.

2. Where is the parotid gland located?

In the parotid region, anterior and inferior to the external ear, between the mandibular ramus and sternocleidomastoid muscle.

3. Which fascial structure forms the capsule of the parotid gland?

The investing layer of deep cervical fascia.

4. Which muscle lies immediately anterior to the superficial part of the parotid gland?

The masseter muscle.

5. Which muscles form important posterior and medial relations of the parotid gland?

The sternocleidomastoid and posterior belly of digastric muscles lie posteriorly, while the styloid muscles lie medially.

6. Which three major structures pass through the parotid gland?

The facial nerve, retromandibular vein, and external carotid artery.

7. What is the superficial-to-deep arrangement of the major structures within the parotid gland?

Facial nerve, retromandibular vein, and external carotid artery.

8. Which nerve divides the parotid gland into superficial and deep surgical lobes?

The facial nerve (cranial nerve VII).

9. What are the five terminal branches of the facial nerve within the parotid gland?

Temporal, zygomatic, buccal, marginal mandibular, and cervical branches.

10. Does the facial nerve provide secretomotor innervation to the parotid gland?

No. It passes through the gland but does not supply its secretory tissue.

11. What is the name of the main excretory duct of the parotid gland?

The parotid duct, also called Stensen's duct.

12. What is the anatomical course of the parotid duct?

It crosses the masseter, turns medially at its anterior border, and pierces the buccinator.

13. Where does the parotid duct open into the oral cavity?

At the parotid papilla in the oral vestibule opposite the maxillary second molar tooth.

14. Which cranial nerve carries preganglionic parasympathetic fibers destined for the parotid gland?

The glossopharyngeal nerve (cranial nerve IX).

15. Which nerve carries preganglionic parasympathetic fibers from the tympanic plexus toward the otic ganglion?

The lesser petrosal nerve.

16. In which ganglion do parasympathetic fibers supplying the parotid gland synapse?

The otic ganglion.

17. Which nerve carries postganglionic parasympathetic fibers to the parotid gland?

The auriculotemporal nerve, a branch of the mandibular division of the trigeminal nerve.

18. Where do sympathetic fibers supplying the parotid gland originate?

The superior cervical sympathetic ganglion, reaching the gland through periarterial plexuses.

19. Which nerves provide general sensory innervation to the parotid region?

The auriculotemporal nerve and great auricular nerve.

20. Which artery passes through the parotid gland and divides into its terminal branches?

The external carotid artery, dividing into the superficial temporal and maxillary arteries.

21. Which veins unite within the parotid gland to form the retromandibular vein?

The superficial temporal and maxillary veins.

22. Which lymph nodes initially receive lymph from the parotid gland and surrounding tissues?

The superficial and deep parotid lymph nodes.

23. What type of secretory acini are found in the normal parotid gland?

Serous acini composed of protein-secreting cells.

24. What is the function of striated ducts in the parotid gland?

They modify primary saliva by reabsorbing sodium and chloride and secreting potassium and bicarbonate.

25. What is an accessory parotid gland?

A variable collection of parotid tissue located anterior to the main gland, usually along the parotid duct.

26. Why can inflammation of the parotid gland cause considerable pain?

Swelling stretches its relatively unyielding fascial capsule.

27. Which nerve is particularly vulnerable during parotidectomy?

The facial nerve and its intraparotid branches.

28. What is Frey syndrome following parotid surgery?

Gustatory sweating and flushing caused by aberrant regeneration of parasympathetic fibers to cutaneous sweat glands.

29. What is the stylomastoid foramen's significance in parotid anatomy?

The facial nerve exits the skull through this foramen before entering the parotid gland.

30. Which anatomical landmarks are commonly used to identify the facial nerve trunk during parotid surgery?

The tragal pointer, posterior belly of digastric, and tympanomastoid suture.