Lecture 19 Flashcards
What is the lower jaw called?
Mandible
What are the two main sections of the mandible?
1) body
2) ramus
What is the anterior transverse part of the mandible?
Body
What is the posterior, vertical part of the mandible?
Ramus
What are the 3 main landmarks of the mandible?
1) mental protuberance
2) angle of mandible
3) mylohyoid line
Where is the mylohyoid line of the mandible located?
Inner surface of the body
The angle of the mandible is the angle between what two structures?
Body and ramus
What are the two types of foramen of the mandible?
1) mandibular foramen
2) mental foramen
Where is the mandibular foramen located?
Medial surface of the ramus, only visible from internal view
Where is the mental foramen located?
Anterior, lateral part of the body
What are the 4 processes of the mandible?
1) alveolar process
2) Coronoid Process
3) condyle process
4) mandibular notch
What are two reasons that jaw is important to understand?
1) it participates in speech
2) it’s important for swallowing
The bolus passing what structure marks the begging in of pharyngeal swallow?
Ramus
What are the alveolar processes?
Sockets for the teeth
The anterior projection of the ramus is called the _______ ______.
Coronoid process
The posterior projection of the ramus is called the _______ ______.
Condyle process
The Coronoid process is the attatchement for the ___ closing muscle called the _________.
Jaw; temporalis
The condyle process communicates with the ______/______ bone via the _____________ joint.
Cranium/temporal; temporal-mandibular
The mandibular notch is the space between the _______ and the ________
Coronoid and condyle
What is the upper jaw called?
Maxilla
What are the three parts of the body of the maxilla?
1) anterior nasal spine
2) superior surface
3) medial surface
What part of the maxilla forms the floor of the orbital cavity?
Superior surface
What part of the maxilla is lateral to the nasal turbinates?
Medial surface
What are the 4 processes of the maxilla?
1) zygomatic process
2) frontal process
3) alveolar process
4) palatine process
What is the zygomatic process of the maxilla?
Attaches to the zygomatic bone
What is the frontal process of the maxilla?
Forms the sides of the nose
What is the alveolar process of the maxilla?
Forms the sockets for the teeth
What is the palatine process of the maxilla?
The anterior 3/4 of the palate
What is the premaxilla?
The triangular anterior portion of the palatine process
What is the intermaxillary suture?
The median palatine suture
What is the incisive suture?
Seperates the premaxilla from the rest of the palatine process
Where is the incisive foramen?
On the palatine process where the incisive suture and the intermaxillary sutures meet
What are the 3 structures that form the nasal septum?
1) perpendicular plate of ethmoid bone
2) vomer bone
3) quandrangular septal cartilage
The nasal bones are _____ and form the _____ of the nose
Paired; bridge
The zygomatic bones are the _____ bones
Cheek
What are three zygomatic processes?
1) of the frontal bone
2) of the temporal bone
3) of the maxilla
What are the smallest named facial bones?
Lacrimal bones
The lacrimal bones form the _____ wall of the _______ _____
Medial; orbital cavity
The palatine bones are _____, __-shaped, and the bottom of that shape form the _______ 1/4 of the ____ ______
Paired; L-shaped; posterior; hard palate
The palatine process forms what two things?
The roof of the mouth and the posterior portion of the nasal cavity
The posterior midline point of the palatine bones is called what?
Posterior nasal spine
What two structures of the hard palate?
1) palatine bones
2) maxilla
The vomer bone is ____ and exposed in ____ _______
Single; cleft palate
What bone forms the inferior posterior section of the nasal septum?
Vomer bone
What are the 3 sections of a tooth?
1) crown
2) root
3) neck
Which part of a tooth is the visible portion?
Crown
Which part of the tooth is root?
2/3 of the tooth, embedded in alveolar process
What is the transition zone of the tooth called?
Neck
What is the substance that covers the crown of the tooth and what is special about it?
Enamel; it is the hardest substance in the body
What is another name for gums?
Gingiva
What is the standard number of teeth for a person to have?
8 in each quadrant, 32 total
List the 6 teeth/teeth categories from anterior to posterior
1) central incisions
2) lateral incisors
3) cuspid/canine/eyetooth
4) first bicuspid/first premolar
5) second bicuspid/second premolar
6) molars (first, second, third)
How many baby teeth to humans have?
20, 5 in each quadrant
When do baby teeth erupt?
Start at about 6 months and end at about 2 years
When do baby teeth shed?
6-12 years of age
What does the normal occlusion of teeth look like?
Upper overlaps lower
What is an abnormal occlusion called?
Malocclusion
Which class has a normal jaw relationship where the anterior cusp of the first maxillary molar fits into the groove of the first lower molar?
Class I
Which class has the mandible retruded relative to the maxilla and the anterior cusp of the upper first molar is anterior to the anterior cusp of the lower first molar groove
Class II
Which class has the mandible protracted relative to the maxilla and the anterior cusp of the upper first molar is posterior to the groove of the lower first molar
Class III
What are the teeth’s 3 functions for speech?
1) place of articulation
2) cutting edge for air stream
3) support
