Anatomy of the Nasal and Oral Cavities (CVR)

Question 1

What separates the left and right nasal cavities?
What is it made up of

Answer 1

Thin midline septum
Formed of cartilage and bone

Question 2

What separates the nasal cavities from the oral cavity

Answer 2

Hard palate

Question 3

What forms the superior part of the posterior septum?

Answer 3

Perpendicular plate of the ethmoid bone

Question 4

Three projections of bones on the lateral wall of the nasal cavity

Answer 4

conchae (turbinates)

Question 5

What are the spaces beneath the conchae called

Answer 5

Meatuses

Question 6

What happens to air as it travels through the meatuses (3 points)

Answer 6

Warmed
Humidified
Filterered

Question 7

What separates the nasal cavity from the cranium and the brain?

Answer 7

Cribriform plate

Question 8

What is the structure of the cribriform plate

Answer 8

Section of bone perforated with tiny holes

Question 9

What receptors does the mucousa in the upper part of the nasal cavity contain

Answer 9

Olfactory receptors

Question 10

What nerves travel through the perforations in the cribriform plate

Answer 10

Olfactory nerves

Question 11

Sensory innervation of the nasal cavity

Answer 11

Trigeminal nerve (CN V)

Question 12

What does the maxillary artery supply and what is it a branch of

Answer 12

Supplies Nasal cavity and branch of external carotid artery

Question 13

Where does the frontal sinus lie?

Answer 13

Anterior to the frontal bone

Question 14

Where does the Ethmoid sinus lie

Answer 14

Within the ethmoid bone
Superior to nasal cavity and medial to the orbits

Question 15

Where does the Sphenoid sinus lie?

Answer 15

In the sphenoid bone

Question 16

Where does the Maxillary sinus lie

Answer 16

Within the maxillae of the facial skeleton

Question 17

Where does the frontal sinus drain into

Answer 17

The middle meatus

Question 18

Where does the sphenoid sinus drain into

Answer 18

Spheno-ethmoidal recess

Question 19

Where does the ethmoid air cells drain into in the nasal cavity

Answer 19

Superior and middle meatuses

Question 20

Where does the maxillary sinus drain into

Answer 20

The middle meatus

Question 21

How does the opening into the middle meatus lie

Answer 21

Superomedially

Question 22

What duct drains tears that lubricate the anterior surface of the eye? where does the duct open into?

Answer 22

Nasolacrimal duct
And duct opens into inferior meatus

Question 23

What is the middle ear?
Where is it located?

Answer 23

Small cavity in the temporal bone and modified for hearing

Question 24

What connects the middle ear and the nasopharynx

Answer 24

Auditory tube

Question 25

Where is the auditory tube located? What surrounds it

Answer 25

Lateral wall of nasopharynx Slight bulge, formed by tonsillar tissue

Question 26

Function of auditory tube

Answer 26

Allows air to pass into middle ear so that pressure of either side of the eardrum is equal

Question 27

What is the hard palate made up of and what is the soft palate made up of

Answer 27

Hard palate-bone-Palatine process of maxilla and palatine bone (anteriorly) soft palate-muscle (posteriorly)

Question 28

What is the hard palate composed of

Answer 28

Palatine processes of the maxillae Horizontal plates of the palatine bones

Question 29

Functions of Hard palate (3)

Answer 29

Prevents food entering nasal cavity Pushing our tongue against it during swallowing, forcing food and fluids back into oropharynx Pushing our tongue against it to articulate certain sounds

Question 30

What projection of the soft palate can be seen in the mouth?

Answer 30

Uvula

Question 31

What does the soft palate do during swallowing

Answer 31

muscles of it contract, elevating soft palate closing off the nasopharynx from the oral cavity

Question 32

What is an epistaxis

Answer 32

Nosebleed

Question 33

What is the superior boundary of the oral cavity

Answer 33

Hard and soft palate

Question 34

Where are the teeth embedded superiorly and inferiorly

Answer 34

superiorly- 16 in maxilla Inferiorly-16 in mandible

Question 35

What are the teeth composed of

Answer 35

Inner pulp Dentin enamel

Question 36

What does the inner pulp contain in teeth

Answer 36

Blood vessels and nerves

Question 37

Where does the tongue extend to and from

Answer 37

Anterior part lies in oral cavity Posterior part extends into nasopharynx

Question 38

What does the tongue contain on its superior surface essential for taste?

Answer 38

Papillae (taste buds)

Question 39

What do the intrinsic and extrinsic nerves of the tongue do respecively?

Answer 39

Intrinsic- change shape of tongue Extrinsic- move the tongue (don't originate in tongue)

Question 40

What nerve innervates the muscles of the tongue

Answer 40

Hypoglossal tongue

Question 41

What nerve innervates taste in the anterior two thirds of the tongue

Answer 41

Facial nerve (CN VII)

Question 42

what nerve innervates general sensation in the anterior two thirds of the tongue?

Answer 42

Trigeminal nerve (CN V)

Question 43

What nerve innervates taste and sensation in the posterior third of the tongue

Answer 43

Glossopharyngeal nerve (CN IX)

Question 44

What 3 vessels supply the oral cavity? What are they branches of?

Answer 44

Lingual maxillary and facial arteries Branches of the external carotid artery

Question 45

4 tonsils in the oral cavity

Answer 45

Pharyngeal - roof of nasopharynx Tubal- opening of auditory tube Palatine - Lateral wall of oropharynx Lingual - posterior tongue

Question 46

Three salivary glands that secrete in to the oral cavity

Answer 46

Parotid Submandibular Sublingual

Question 47

Where does saliva from the parotid gland empty into the mouth via

Answer 47

Via the parotid duct

Question 48

Where does the facial nerve divide into 5 branches?

Answer 48

In the parotid gland

Question 49

What nerve innervates the parotid gland

Answer 49

The glossopharyngeal nerve

Question 50

Where is the parotid gland located

Answer 50

Posterior part of mandible

Question 51

Where are the submandibular glands located and where do they open up into?

Answer 51

Inferior to mandible, open up into floor of mouth

Question 52

What nerve innervates the submandibular and sublingual glands

Answer 52

Facial nerve (CN V)

Question 53

Where do the sublingual glands lie

Answer 53

Floor of mouth

Question 54

Name structures a-b

Answer 54

a-Pharyngeal tonsils b-Tubal tonsils c-Palatine tonsil d-Lingual tonsil