Lecture 1 - General Org

Question 1

What are the 2 types of Cranium and what do they do?

Answer 1

Neurocranium - encases brain

Viserocranium - produces facial skeleton

Question 2

What is the scalp?

Answer 2

Whole of the top of the head that runs from the top of the eye brows to the back of the head above the ears

Question 3

What is the face?

Answer 3

From the eyebrows down to the chin

Question 4

What are the 2 main nerves of the face?

Answer 4

Facial nerve

Trigeminal nerve

Question 5

How many cranial nerves are there?

Answer 5

12 cranial nerves

Question 6

What are the 2 types of muscles in the face?

Answer 6

Muscles of mastication

Muscles of facial expression

Question 7

What nerve supplies the Muscles of Facial expression?

Answer 7

Facial nerve

Question 8

What nerve supplies the Muscles of Mastication and what branch?

Answer 8

Trigeminal nerve (mandibular division)

Question 9

What joint do the muscles of Mastication act on?

Answer 9

Temporomandibular joint

Question 10

What is the prominent cheek bone called?

Answer 10

Zygoma

Question 11

what is the bone in the middle of the skull called (where the nose is)?

Answer 11

Maxilla

Question 12

What is the name of the jaw bone?

Answer 12

Mandible

Question 13

What is the muscle of the forehead?

Answer 13

Occipitofrontalis

Question 14

What does Occipitofrontalis do?

Answer 14

Raises eyebrows and wrinkles forehead

Question 15

What is the muscle the circles around each bony orbit?

Answer 15

Orbicularis oculi

Question 16

What are the 2 parts of orbicularis oculi?

Answer 16

Orbital

Palpebral

Question 17

What is the general role of orbicularis oculi?

Answer 17

Blinking
Protecting the and keeps the eye moist

Question 18

What is the role of the orbital part of Orbicularis oculi?

Answer 18

Squeeze eyelids tightly together

Question 19

What is the role of the Palpebral part of Orbicularis oculi?

Answer 19

Gently closes eyelids (involuntary blinking)

Question 20

What is the name of the muscle surrounding the orifice of the mouth?

Answer 20

Orbicularis oris

Question 21

What is the role of orbicularis oris?

Answer 21

Purses lips together
Seals mouth closed

Question 22

What muscle forms the wall of the cheek?

Answer 22

Buccinator

Question 23

What is the role of Buccinator?

Answer 23

Holds cheek in towards teeth

Question 24

What 2 muscles act to dilate the mouth drawing the angles of the mouth superiority and posteriorly?

Answer 24

Risorius
Zygomaticus major

Question 25

What type of muscle is Platysma out of the 2 types in the face?

Answer 25

Muscle of facial expression

Question 26

Where does platysma originate and insert?

Answer 26

From fascia on anterior chest and inserts into lower part of mandible

Question 27

What is the action of platysma?

Answer 27

Tenses skin of anterior neck drawing the lower lips down

Question 28

What are all the muscles of facial expression?

Answer 28

Occipitofrontalis Orbicularis oculi Orbicularis oris Buccinator Platysma

Question 29

What nerve innervates all the muscles of facial expression?

Answer 29

Cranial nerve VII

Question 30

What are the 5 branches of the facial nerve supplying the muscles of facial expression?

Answer 30

Temporal branch Zygomatic branch Buccal branch Marginal mandibular branch Cervical branch

Question 31

What gland does the facial nerve branches run through?

Answer 31

Parotid gland

Question 32

What is the pneumonic to remeber the 5 branches of the facial nerve?

Answer 32

To Zanzibar By Motor Car Temporal branch Zygomatic branch Buccal branch Marginal mandibular Cervical branch

Question 33

What is the likely illness if someone’s parotid gland is swollen and there damage to a facial nerve?

Answer 33

Malignancy

Question 34

What is the most common cause of facial nerve lesions?

Answer 34

Bell’s palsy

Question 35

What is the scale used to indicate severity of Ipsilateral facial muscle weakens or paralysis from a a facial nerve lesion?

Answer 35

House-Brackmann scale

Question 36

How many muscles of mastication are there?

Answer 36

4

Question 37

What are the 4 muscles of mastication?

Answer 37

Lateral pterygoids Medial pterygoids Temporalis Masseter

Question 38

What are the muscles of mastication innervated by?

Answer 38

Mandibular division of Trigeminal nerve

Question 39

What is the role of the lateral pterygoids?

Answer 39

Depress mandible Laaaaaaaaterall depresses mandible like your saying laaaaaaaa

Question 40

What action do the pterygoids do?

Answer 40

Move mandible side to side

Question 41

What is the role of the medial pterygoids?

Answer 41

Elevates/closes jaw

Question 42

What is the role of temporalis? Where is it?

Answer 42

Elevates and retracts mandible Feel at temples when clench jaw

Question 43

What does masseter do and where is it?

Answer 43

Elevates and protracts mandible Side of cheek felt when clench cheek

Question 44

What cranial nerve is the Trigeminal nerve?

Answer 44

Cranial nerve V

Question 45

What are the 3 branches of the Trigeminal nerve?

Answer 45

Ophthalmic division Maxillary division Mandibular division

Question 46

What are the 2 branches of the Trigeminal nerve that free purely sensory?

Answer 46

Opthalmic division Maxillary division

Question 47

hat division of the Trigeminal nerve has both sensory and motor function?

Answer 47

Mandibular division