Anatomy of Maxilla Bone

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Questions and Answers

What is the number of maxilla bones in the human skull?

2 (correct)

Which part of the maxilla bone forms the anterior boundary of the lacrimal fossa?

Palatine process

Frontal process (correct)

Zygomatic process

Alveolar process

What is the function of the alveolar process of the maxilla bone?

To articulate with the lacrimal bone

To form the hard palate

To support the maxillary teeth (correct)

To contain the maxillary paranasal sinus

Which of the following bones does the maxilla bone NOT articulate with?

Occipital bone Signup and view all the answers

What happens to the alveolar bone when a tooth is lost?

It is resorbed Signup and view all the answers

How many teeth does each maxilla bone contain?

5 primary and 8 permanent teeth Signup and view all the answers

What is the shape of the lacrimal bone?

Rectangular Signup and view all the answers

How many lacrimal bones are present in the human body?

2 Signup and view all the answers

What is the function of the lacrimal fossa?

To house the lacrimal sac Signup and view all the answers

What is the shape of the vomer bone?

Plough-shaped Signup and view all the answers

How many vomer bones are present in the human body?

1 Signup and view all the answers

What is the function of the small orbital process?

To form part of the orbit Signup and view all the answers

Where is the pterygopalatine fossa located?

Behind the lateral wall of the nasal cavity Signup and view all the answers

What structure does the small orbital process form part of?

The wall of the pterygopalatine fossa Signup and view all the answers

In which cavity does the small orbital process form part of the lateral wall?

Nasal cavity Signup and view all the answers

What is the relationship between the small orbital process and the nasal cavity?

It forms part of the lateral wall of the nasal cavity Signup and view all the answers

What articulates with the maxilla to form the palatine canal?

Lateral wall Signup and view all the answers

What forms the posterior portion of the hard palate?

Horizontal plate Signup and view all the answers

What is located superior to the horizontal plate?

Nasal cavity Signup and view all the answers

What is the relationship between the hard palate and the nasal cavity?

The nasal cavity is superior to the hard palate Signup and view all the answers

What is the function of the palatine canal?

Allows for the passage of nerves and blood vessels Signup and view all the answers

What is located on the medial part of the horizontal plates?

Greater palatine foramen Signup and view all the answers

Which structure is formed by both of the horizontal plates?

Posterior nasal spine Signup and view all the answers

What is the location of the greater palatine foramen?

On the medial part of the horizontal plates Signup and view all the answers

Which of the following is NOT located on the horizontal plates?

Lacrimal fossa Signup and view all the answers

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 Signup and view all the answers

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

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Description

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.