Parotid Flashcards

Parotid gland

1
Q

what is the queen of the face

A

Facial nerve

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2
Q

What is the parotid Gland

A

It is the largest of 3 pairs of salivary glands, it is composed of serous alveoli. Lobulated, yellowish and 25g

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3
Q

What is the location of the Parotid Gland

A

In pyramidal fossa, Below External acoustic meatus, Btw Ramus of Mandible and Sternocleidomastoid muscle

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4
Q

What makes up the Ant Boundary

A

Masseter

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5
Q

The capsule splits_____to enclose

A

btw angle of mandible and mastoid process

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6
Q

Superficial lamina (capsule)

A

Thick and adherent to gland, attached at zygomatic arch

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7
Q

Deep lamina (capsule)

A

Thin and attached to Styloid process, mandible, tympanic plate

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8
Q

Relations of Posteromedial Surface

A

Mastoid process with sterno…, post belly of digastric - styloid process……..maxillary artery leaves

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9
Q

Relations of Anteromedial Surface

A

Masseter… - Post. Border of Ramus of Mandible - Medial pterygoid - Lat surf of Temporomandibular joint - Emerging branches of facial nerve

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10
Q

What structures emerge through Apex

A

Cervical branch of F nerve - the 2 divisions of retromandibular vein(ant and post)

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11
Q

Structures emerging at Ant Border

A

TZB terminal branches of F nerve - Parotid duct - Transverse facial vessels

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12
Q

Posterior border

A

Overlaps Sterno muscle

Emerges
Post. Auricular vein, nerve, artery

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13
Q

Medial border

A

related to lateral wall of pharynx

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14
Q

List arteries within Parotid gland

A

ECA - Maxillary artery - Superficial temporal vessels, Post auricular artery

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15
Q

Facial nerve enters and exits through

A

enters, upper posteromedial surface - branches leave, anteromedial surface

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16
Q

What is the largest of the salivary glands?

A

The parotid gland.

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17
Q

Where is the parotid gland located?

A

Below the external acoustic meatus, between the ramus of the mandible and sternocleidomastoid.

18
Q

What structure does the anterior portion of the parotid gland overlap?

A

The masseter muscle.

19
Q

What is the detached part of the forward extension of the parotid gland called?

A

The accessory parotid gland.

20
Q

How many surfaces does the parotid gland have?

A

Four surfaces: superior, superficial, anteromedial, and posteromedial.

21
Q

How many borders does the parotid gland have?

A

Three borders: anterior, posterior, and medial.

22
Q

What forms the capsule of the parotid gland?

A

The investing layer of the deep cervical fascia.

23
Q

Which ligament separates the parotid from the submandibular gland?

A

The stylomandibular ligament.

24
Q

What are the relations of the apex of the parotid gland?

A

Overlaps the posterior belly of the digastric muscle and carotid triangle.

25
Q

What are the structures related to the superior surface of the parotid gland?

A

External acoustic meatus, temporomandibular joint, superficial temporal vessels, and auriculotemporal nerve.

26
Q

What are the main contents of the superficial surface of the parotid gland?

A

Skin, superficial fascia (with great auricular nerve), preauricular lymph nodes, and parotid fascia.

27
Q

What structure grooves the anteromedial surface of the parotid gland?

A

The posterior border of the ramus of the mandible.

28
Q

What artery enters the parotid gland from its posteromedial surface?

A

The external carotid artery.

29
Q

What veins are formed within the parotid gland?

A

The retromandibular vein is formed by the union of the superficial temporal and maxillary veins.

30
Q

How long is the parotid duct?

A

About 5 cm long.

31
Q

What muscle does the parotid duct run across before turning medially?

A

The masseter muscle.

32
Q

What structures are pierced by the parotid duct before opening into the oral cavity?

A

Buccal pad of fat, buccopharyngeal fascia, and buccinator muscle.

33
Q

Where does the parotid duct open into the oral cavity?

A

Opposite the crown of the upper second molar tooth.

34
Q

What is the blood supply of the parotid gland?

A

The external carotid artery and its branches (e.g., superficial temporal artery).

35
Q

What is the lymphatic drainage of the parotid gland?

A

Lymph drains first into the parotid lymph nodes and then into upper deep cervical nodes.

36
Q

What is the parasympathetic nerve supply to the parotid gland?

A

The auriculotemporal nerve (branch of the mandibular nerve) carries postganglionic parasympathetic fibers.

37
Q

Where do the preganglionic parasympathetic fibers to the parotid gland originate?

A

in the inferior salivatory nucleus.

38
Q

Through which nerve do preganglionic parasympathetic fibers travel to reach the otic ganglion?

A

Glossopharyngeal nerve (CN IX), via its tympanic branch and the lesser petrosal nerve.

39
Q

What is the sympathetic innervation of the parotid gland?

A

Sympathetic fibers are vasomotor, derived from the plexus around the external carotid artery.

40
Q

What nerve provides sensory innervation to the parotid gland and its fascia?

A

Sensory innervation to the parotid gland is via the auriculotemporal nerve, while the parotid fascia is supplied by the great auricular nerve (C2).