W1: S3 - Face

Question 1

How do the muscles of facial expression differ from skeletal muscles?

Answer 1

• Lie very superficial
• Attach to fascia/other muscles of directly to connective tissue in the skin

Question 2

Answer 2

• A. Temporalis
• B. Occipitalis
• C. Masseter
• D. Sternocleidomastoid
• E. Frontalis
• F. Obicularis oculi
• G. Zygomaticus major
• H. Obicularis oris
• I. Buccinator

Question 3

What is the function of the obicularis oculi?

Answer 3

Closes eye

Question 4

What is the function of the obicularis oris?

Answer 4

Compression and potrusion of lips

Question 5

What is the function of the buccinator?

Answer 5

Controls food synergystically with the tongue

Question 6

What is the function of the platysma?

Answer 6

Depression of angles of mouth and mandible

Question 7

What nerve innervates all the muscles of facial expression?

Answer 7

Facial nerve

Question 8

Which foramen does the facial nerve (CNVII) leave the cranium through?

Answer 8

Internal acoustic meatus

Question 9

Which foramen in the inferior skull aspect does the facial nerve emerge?

Answer 9

Stylohyoid foramen

Question 10

In which structure does the facial nerve split into it’s terminal branches?

Answer 10

Parotid gland

Question 11

What is a facial palsy?

Answer 11

Intracranial injury/damage in the facial nerve one side of the face resulting in palsy of the muscles of facial expression

Question 12

What happens to the eyelids, corner of the mouth and cheek when the facial nerve is damaged (bells palsy)?

Answer 12

They’d all droop

Question 13

What are the other two pairs of salivary glands besides the parotid?

Answer 13

• Sublingual
• Submandibular

Question 14

What does the parotid gland extend to superiorly?

Answer 14

Zygomatic arch

Question 15

Where does the parotid gland extend to inferiorly?

Answer 15

Angle of the mandible

Question 16

What type of gland is the parotid gland?

Answer 16

Exocrine

Question 17

Where do secretions of an exocrine gland secrete onto?

Answer 17

A surface

Question 18

What muscle does the parotid pierce to enter the oral cavity?

Answer 18

Buccinator

Question 19

Opposite which tooth does the parotid duct open into the oral cavity?

Answer 19

2nd upper molar

Question 20

What nerve, vein and artery enter and leave the parotid?

Answer 20

• Nerve = Facial
• Artery = ECA dividing into Superficial Temporal
• Vein = Superficial Temporal

Question 21

What division of the ANS is secretomotor to the parotid gland?

Answer 21

Parasympathetic

Question 22

Which cranial nerve carries the parasympathetic fibres that innervate the parotid?

Answer 22

CN IX - Glossopharyngeal

Question 23

Where does the parotid get sympathetic innervation from?

Answer 23

Superior Cervical Ganglion

Question 24

What are the 3 main divisions of the trigeminal nerve?

Answer 24

• V1 = Opthalmic
• V2 = Maxillary
• V3 = Mandibular

Question 25

What artery is seen here?

Answer 25

Facial

Question 26

What artery is seen here?

Answer 26

Superficial temporal artery

Question 27

What bone does the facial artery wind around to reach the face and what gland does it groove?

Answer 27

• Mandible
• Submandibular gland

Question 28

What muscle on the side of the face lies immediately posterior to the facial artery as it enters the face?

Answer 28

Masseter

Question 29

What vein does the facial vein drain into?

Answer 29

IJV

Question 30

What vein does the superficial temporal vein drain into?

Answer 30

EJV

Question 31

What is the pathway of Facial Artery?

Answer 31

1. Branches of ECA
2. Grooves Submandibular Gland
3. Curls over Mandible
4. Travels anterior to masseter
5. Terminates at medial commisure of eye as Angular Artery