Superficial Face and Parotid Region (prestudy)

Question 1

Where do branches of the facial n. (VII) after exiting the stylomastoid foramen?

Answer 1

• THROUGH the PAROTID Gland

- ACROSS the face, to innervated muscles of facial expression

Question 2

Where does the facial artery emerge from under the mandible?

Answer 2

• Just anterior to the masseter

Question 3

What terminating branch of the facial artery extends to the medial corner of the eye?

Answer 3

• Angular a.

Question 4

What branches of the facial a. can be found near the upper and lower lips?

Answer 4

Lower Lip:
- Inferior Labial Branch

Upper Lip:
- Superior Labial Branch

Question 5

How are the two external carotid arteries connected?

Answer 5

Via the anastomoses between R and L inferior, and R and L superior labial branches of the facial a.

Question 6

What nerve gives off branches that supply cutaneous (GSA) innervation to the face?
- Branch names

Answer 6

• Trigeminal

Branches:

• Supraorbital n.
• Infraorbital n.
• mental n.

Question 7

**Know dermatomes of the face

Answer 7

**Know dermatomes of the face

Question 8

What is the outline of the parotid bed?

• anteriorly
• Posteriorly
• Superiorly

Answer 8

Anterior:
Masseter

Posterior:
Pinna and SCM

Superiorly:
Zygomatic Arch

Question 9

Describe the Course of the Parotid Duct.

Answer 9

1. Exits the Parotid 1/2 between the zygomatic arch and the corner of the mouth
2. Transverses Masseter
3. Pierces Buccinator muscle by passing deeply through buccal fat

Question 10

What bones is the deep aspect of the the parotid gland wedged between?

Answer 10

Anteriorly:
Ramus of the Mandible and its attached muscles

Posteriorly:
Mastoid and Styloid processes and their attached muscles

Question 11

T or F: the parotid gland extends deeply to reach the lateral aspect of the pharynx.

Answer 11

True

Question 12

PARASYMPATHETIC INNERVATION TO THE PAROTID

• Cranial Nerve
• Preganglionics
• Ganglia
• Postganglionics

Answer 12

CN IX

Preganglionics:
- Tympanic and Lesser Petrosal Branches of CN IX

Ganglia:
- Otic Ganglia

Postganglionics:
- travel with the auriculotemporal branch of the mandibular n.

Question 13

What does parasympathetic activity do to the salivary gland?

Answer 13

• Increases Salivation

Question 14

What provides GSA innervation to the parotid fascia (parotid capsule) ?

Answer 14

MIXED

Contributions from:

1. CN V3
2. C2 and C3 ventral rami of the cervical plexus