26 Questions
What is the number of maxilla bones in the human skull?
2
Which part of the maxilla bone forms the anterior boundary of the lacrimal fossa?
Frontal process
What is the function of the alveolar process of the maxilla bone?
To support the maxillary teeth
Which of the following bones does the maxilla bone NOT articulate with?
Occipital bone
What happens to the alveolar bone when a tooth is lost?
It is resorbed
How many teeth does each maxilla bone contain?
5 primary and 8 permanent teeth
What is the shape of the lacrimal bone?
Rectangular
How many lacrimal bones are present in the human body?
2
What is the function of the lacrimal fossa?
To house the lacrimal sac
What is the shape of the vomer bone?
Plough-shaped
How many vomer bones are present in the human body?
1
What is the function of the small orbital process?
To form part of the orbit
Where is the pterygopalatine fossa located?
Behind the lateral wall of the nasal cavity
What structure does the small orbital process form part of?
The wall of the pterygopalatine fossa
In which cavity does the small orbital process form part of the lateral wall?
Nasal cavity
What is the relationship between the small orbital process and the nasal cavity?
It forms part of the lateral wall of the nasal cavity
What articulates with the maxilla to form the palatine canal?
Lateral wall
What forms the posterior portion of the hard palate?
Horizontal plate
What is located superior to the horizontal plate?
Nasal cavity
What is the relationship between the hard palate and the nasal cavity?
The nasal cavity is superior to the hard palate
What is the function of the palatine canal?
Allows for the passage of nerves and blood vessels
What is located on the medial part of the horizontal plates?
Greater palatine foramen
Which structure is formed by both of the horizontal plates?
Posterior nasal spine
What is the location of the greater palatine foramen?
On the medial part of the horizontal plates
Which of the following is NOT located on the horizontal plates?
Lacrimal fossa
What is the relationship between the posterior nasal spine and the horizontal plates?
The posterior nasal spine is located on the medial part of the horizontal plates
Study Notes
Maxilla Bone
- Articulates with opposite maxilla, frontal, nasal, vomer, and ethmoid bones, inferior nasal concha, palatine, lacrimal, and zygomatic bones, and septal and nasal cartilages
- There are 2 maxilla bones
- Consists of:
- Body: major part of the bone, shaped like a pyramid, contains maxillary paranasal sinus, infraorbital canal and foramen pass from orbit region to face region
- Frontal process: extends superiorly to articulate with nasal, frontal, ethmoid, and lacrimal bones, forms anterior boundary of lacrimal fossa
- Zygomatic process: extends laterally to articulate with maxillary process of zygomatic bone
- Palatine process: extends medially to form majority of hard palate, articulates with palatine process of opposite side and horizontal plate of palatine bone
- Alveolar process: supports all maxillary teeth, extends inferiorly from maxilla, contains 5 primary and 8 permanent teeth, alveolar bone is resorbed when tooth is lost
Lacrimal Bone
- Small and rectangular in shape, very thin and fragile
- 2 lacrimal bones
- Forms small portion of medial wall of orbit
- Articulates with frontal process of maxilla, orbital plate of ethmoid bone, frontal bone, and inferior nasal concha
- Lacrimal fossa is located in region that articulates with frontal process of maxilla
- Inferior part forms small portion of lateral wall of nasal cavity
Vomer Bone
- Shaped like a “plough”
- Forms posterior inferior part of nasal septum
- 1 vomer bone
- Articulates with perpendicular plate of ethmoid, maxilla, palatine, and sphenoid bones and septal cartilage
- Small orbital process helps form part of orbit
- Forms part of wall of pterygopalatine fossa and lateral wall of nasal cavity
- Lateral wall articulates with maxilla to form palatine canal
Palatine Bone
- Horizontal plate forms posterior portion of hard palate
- Superior to horizontal plate is nasal cavity
- Medial part, formed by both horizontal plates, is posterior nasal spine
- Greater palatine foramen is on horizontal plate
This quiz covers the structure and functions of the maxilla bone, including its articulations, parts, and features. Learn about the body, frontal process, and other components of the maxilla bone.
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