Lecture 11

Question 1

What nerve supplies the sensory of the face?

Answer 1

3 branches of the Trigeminal Nerve
1) Ophthalmic Nerve
2) Maxillary Nerve
3) Mandibular Nerve

Question 2

Is the Ophthalmic Division Sensory, Motor or Both?

Answer 2

Sensory

Question 3

What are the 3 branches of the Ophthalmic Division?

Answer 3

• Frontal Nerve
• Lacrimal Nerve
• Nasociliary Nerve

Question 4

What does the Lacrimal Nerve supply?

Answer 4

Gives branches to the conjunctiva and skin of the upper eyelid

Question 5

What does the Frontal Nerve give rise to?

Answer 5

• Supraorbital Nerve
• Supratrochlear Nerve

Question 6

What does the Frontal Nerve supply?

Answer 6

• The upper eyelid
• Forehead
• Scalp

Question 7

What does the Nasociliary Nerve give rise to?

Answer 7

• External Nasal Nerve
• Infratrochlear Nerve

Question 8

What does the External Nasal Nerve supply?

Answer 8

Skin of dorsum of the nose

Question 9

What does the Infratrochlear Nerve supply?

Answer 9

Medial upper eyelid

Question 10

Where do the Ophthalmic Division Nerves leave through?

Answer 10

Superior Orbital Fissure

Question 11

Is the Maxillary Division Sensory, Motor or Both?

Answer 11

Sensory

Question 12

What are the 2 branches of the Maxillary Division?

Answer 12

1) Zygomatic Nerve
2) Infraorbital Nerve

Question 13

List the 2 branches that the Zygomatic Nerve divides into

Answer 13

• Zygomaticofacial
• Zygomaticotemporal

Question 14

What does the Zygomatic Nerve supply?

Answer 14

Skin over the zygomatic bone

Question 15

What does the Infraorbital Nerve supply?

Answer 15

Sensory to cheek & upper lip

Question 16

Where do the Maxillary Division Nerves leave through?

Answer 16

Foramen Rotundum

Question 17

Is the Mandibular Division Sensory, Motor or Both?

Answer 17

Sensory and Motor

Question 18

What are the 3 branches of the Mandibular Division?

Answer 18

1) Mental Nerve
2) Buccal Nerve
3) Auriculotemporal Nerve

Question 19

What is the Mental Nerve a branch of?

Answer 19

A terminal branch of inferior alveolar nerve

Question 20

What does the Mental nerve supply?

Answer 20

Skin of chin and lower lip

Question 21

What does the Buccal Nerve supply?

Answer 21

Skin and mucous membrane of cheek

Question 22

What does the Auriculotemporal Nerve provide sensory to?

Answer 22

Skin in the temporal region

Question 23

What does the Great Auricular Nerve supply?

Answer 23

The skin over the parotid gland and area between mandible and mastoid process

Question 24

What are the Superficial Muscles of the Face also known as?

Answer 24

Muscles of Facial Expression

Question 25

What nerve is the Muscles of Facial Expression supplied by?

Answer 25

Facial Nerve

Question 26

What is the muscle that surrounds the mouth?

Answer 26

Orbicularis oris

Question 27

What is the function of the Orbicularis oris?

Answer 27

Insertion - mucous membrane of lips Action - compresses and protrudes lips

Question 28

What is the knot at the angle of the mouth called?

Answer 28

Modiolus

Question 29

List the Superior dilators of the mouth

Answer 29

- Zygomaticus Major & Minor - Levator Labii Superioris - Levator Anguli Oris

Question 30

List the Inferior dilators of the mouth

Answer 30

- Depressor Labii Inferioris - Depressor Anguli Oris

Question 31

List the Muscles of the eyelids

Answer 31

- Orbicularis Oculi - Frontalis

Question 32

List the 2 parts of the Orbicularis Oculi

Answer 32

- Orbital part - Palpebral part

Question 33

What are the functions of the Orbital and Palpebral parts?

Answer 33

- Palpebral part: closes eyelids gently - Orbital part: closes eyelids forcibly

Question 34

What is the function of the Frontalis?

Answer 34

Elevates eyebrows and upper eyelid

Question 35

What is the muscle of the Cheek?

Answer 35

Buccinator

Question 36

What is the Posterior Attachment of the Buccinator?

Answer 36

Arises from maxilla and mandible adjacent to the molar teeth as well as the **Pterygomandibular Raphe**

Question 37

What are the 2 attachments of the Buccinator?

Answer 37

Posterior and Anterior

Question 38

What is the function of the Buccinator?

Answer 38

- Contracts to push food onto the teeth during chewing - Blowing air from the mouth (whistling)