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Flashcards in Week 2 - Wet Room Deck (52):
1

How many permanent Incisor, canine, premolar and molar teeth are there?

Incisor = 8
Canine = 4
Premolar = 8
Molar = 12

2

How many deciduous incisor, canine and molar teeth are there?

Incisor = 8
Canine = 4
molar = 8

3

What type of joint is the temporomandibular joint (TMJ)?

Hinge synovial joint

4

Which 2 articular processes form the TMJ?

Mandibular fossa of the temporal bone
Condylar process of the mandible

5

What movements of the mandible occur at the TMJ?

Elevation (close mouth)
Depression (open mouth)
Protrusion
Retrusion (reduced chin)
Side to side movements

6

Explain what the muscles of mastication are?
(don't name them)

The muscles of mastication refer to a group of four muscles which act on the TMJ during mastication

7

Name the muscles of mastication

Superficial muscles:
-Temporalis
-Masseter

Deeper Muscles:
-Lateral pterygoid
-Medial pterygoid

8

What is the temporalis muscle?

This is a large fan shaped muscle on the side of the head

9

What are the bony attachments of the temporals muscle?

(Floor of the) temporal fossa
(Tip and medial surface of the) coronoid process

10

How do the anterior fibres of the temporalis differ from the posterior fibres of the temporalis?

Anterior fibres = nearly vertical (elevation)
Posterior fibres = nearly horizontal (retrusion)

11

What are the bony attachments of the masseter?

Zygomatic arch
Outer surface of the ramus and angle of the mandible

12

What part of the skull to the lateral and medial pterygoid muscles attach?

LATERAL pterygoid plate

13

What side of the pterygoid plate do the lateral and medial pterygoid muscles attach

Medial pterygoid muscle = medial side of lateral pterygoid plate

Lateral pterygoid muscle = lateral side of lateral pterygoid plate

14

Where in the mandible does the lateral pterygoid muscle attach?

Enters into the joint capsule of the TMJ to insert onto the neck of the mandible and also the articular disc of this joint

15

Where in the mandible does the medial pterygoid muscle attach?

medial surface of rams of mandible

16

What causes depression of the mandible if the muscles of mastication cause elevation?

Suprahyoid bones and gravity

17

What are the suprahyoid muscles that depress the mandible?

Myohyoid
Digastric
Stylohyoid

18

What muscle causes protrusion of the mandible?

Posterior fibres of the temporalis muscle

19

What muscle causes retraction of the mandible

Biilateral lateral pterygoid muscle

20

What muscle causes side to side movements of the jaw?

Unilateral lateral pterygoid muscle

21

What innervates the muscles of mastication?

Branches of the mandibular division of the trigeminal nerve.

This is the only division of the trigeminal nerve that carries both sensory and motor fibres

22

What does the maxillary nerve supply?

Completely sensory

Cutaneous innervation to the cheek, upper lip, lower eyelid,

Mucous membranes of the: palate, teeth, gingiva, nasal cavity and maxiallary sinus

23

What does the ophthalmic nerve supply?

Completely sensory

The skin of the forehead
Upper eyelid
Nasal mucous membranes and sinuses

24

Describe the path of the mandibular division of the trigeminal nerve

It emerges from the cranial cavity through the OVAL FORAMEN (bottom of sphenoid bone)
In the INFRATEMPORAL FOSSA, its motor branches supply the muscles of mastication
One of its sensory branches, the INFERIOR ALVEOLAR NERVE enters into the MANDIBULAR FORAMEN and provides sensory innervation to the mandibular area.

25

What is the first part of the respiratory tract?

The Nose

26

what does the frontal process of the maxilla articulate with?

The nasal bones laterally

27

What forms the roof of the nose?

The nasal bones
Part of the frontal bone
Ethmoid bone
Body of the sphenoid bone

28

The part of the ethmoid bone that contributes to the roof of the nasal cavity contains the what?

Cribiform plate

29

What forms the floor of the nasal cavity?

Palatine processes of the maxillae and the palatine bones which form the hard palate.

The floor of the nasal cavity is extended posteriorly by the soft palate

30

What two bones form the nasal septum?
What structure lies anterior to these and completes the nasal septum?

Vommer
Perpendicular plate of the ethmoid

Septal cartilage

31

What passes through the cribriform plate?

Olfactory nerve

32

What attaches to the crust gali?

flax cerebrie

33

What are some of the parts of the ethmoid bone?

The cribiform plate
The crista gali
The central plate
The superior and middle conchae
The ethmoid air cells

34

What two bones form the hard palate?

Palatine bone
Maxilla

35

What kind of epithelium forms the respiratory mucosae which lines most of the nasal cavity?

Ciliated Pseudostratified Columnar Epithelium

36

The roof of the nasal cavity is lined by what?

Olfactory mucosa

37

What cranial nerve innervates the olfactory mucosa?

Olfactory nerve (Cr. N. I)

38

Which plate of bone lying on the roof of the cranial cavity do axons of the olfactory nerve pass through to enter into the cranial cavity?

Cribiform plate

39

What is the name given to the space above the superior concha?

Spheno-ethmoidal recess

40

What bone is the superior and middle conchae part of?
What bone if the inferior concha part of?

Superior and middle conchae = ethmoid

Inferior conchae = its own bone

41

What provides a rich arterial supply to the nose?

Branches of the ophthalmic artery (itself a branch of the ECA) and also branches of the ECA

42

What venous drainage does the nose have?

Venous plexus

43

What sinus opens into the spheno-ethmoidal sinus?

sphenoid sinus

44

What sinus opens into the superior meatus?

Posterior ethmoidal air cells

45

What opens into the middle meatus?

Maxillary sinus
Frontal sinus
Anterior ethmoidal air cells
Middle ethmoidal air cells

46

What opens into the inferior meatus?

Nasolacrimal duct

47

Which sinus' opening is not at its most inferior part and therefore secretions from this sinus do not drain well

Maxillary sinus

48

Which sinus has its floor often indented by tooth sockets?

Maxillary sinus

49

What branch of the facial nerve innervates frontal air sinus?

V1

50

What branch of the facial nerve innervates the maxillary air sinus?

V2

51

What branch of the facial nerve innervates the ethmoidal air cells?

V1 + V2

52

What branch of the facial nerve innervates the sphenoid air sinus?

V1