Anatomy of Maxilla Bone
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Questions and Answers

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

  • 4
  • 3
  • 1
  • 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?

<p>Occipital bone (C)</p> Signup and view all the answers

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

<p>It is resorbed (B)</p> Signup and view all the answers

How many teeth does each maxilla bone contain?

<p>5 primary and 8 permanent teeth (B)</p> Signup and view all the answers

What is the shape of the lacrimal bone?

<p>Rectangular (D)</p> Signup and view all the answers

How many lacrimal bones are present in the human body?

<p>2 (A)</p> Signup and view all the answers

What is the function of the lacrimal fossa?

<p>To house the lacrimal sac (D)</p> Signup and view all the answers

What is the shape of the vomer bone?

<p>Plough-shaped (B)</p> Signup and view all the answers

How many vomer bones are present in the human body?

<p>1 (D)</p> Signup and view all the answers

What is the function of the small orbital process?

<p>To form part of the orbit (B)</p> Signup and view all the answers

Where is the pterygopalatine fossa located?

<p>Behind the lateral wall of the nasal cavity (B)</p> Signup and view all the answers

What structure does the small orbital process form part of?

<p>The wall of the pterygopalatine fossa (B)</p> Signup and view all the answers

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

<p>Nasal cavity (D)</p> Signup and view all the answers

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

<p>It forms part of the lateral wall of the nasal cavity (A)</p> Signup and view all the answers

What articulates with the maxilla to form the palatine canal?

<p>Lateral wall (D)</p> Signup and view all the answers

What forms the posterior portion of the hard palate?

<p>Horizontal plate (C)</p> Signup and view all the answers

What is located superior to the horizontal plate?

<p>Nasal cavity (D)</p> Signup and view all the answers

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

<p>The nasal cavity is superior to the hard palate (A)</p> Signup and view all the answers

What is the function of the palatine canal?

<p>Allows for the passage of nerves and blood vessels (C)</p> Signup and view all the answers

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

<p>Greater palatine foramen (B)</p> Signup and view all the answers

Which structure is formed by both of the horizontal plates?

<p>Posterior nasal spine (C)</p> Signup and view all the answers

What is the location of the greater palatine foramen?

<p>On the medial part of the horizontal plates (D)</p> Signup and view all the answers

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

<p>Lacrimal fossa (A)</p> Signup and view all the answers

What is the relationship between the posterior nasal spine and the horizontal plates?

<p>The posterior nasal spine is located on the medial part of the horizontal plates (C)</p> Signup and view all the answers

Flashcards

What is the Maxilla Bone?

The maxilla bone is a paired bone that forms the upper jaw and contributes to the structure of the face and nasal cavity. It has several processes that articulate with other bones, forming crucial connections.

What is the Body of the Maxilla?

The body of the maxilla is the main part of the bone, shaped like a pyramid. It contains the maxillary sinus, which is an air-filled cavity within the bone.

What is the Frontal Process of the Maxilla?

The frontal process extends upward from the maxilla and articulates with the nasal, frontal, ethmoid, and lacrimal bones. It forms the anterior boundary of the lacrimal fossa, which is a depression where the tear duct is located.

What is the Zygomatic Process of the Maxilla?

The zygomatic process of the maxilla extends laterally and articulates with the maxillary process of the zygomatic bone, which is the cheekbone.

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What is the Palatine Process of the Maxilla?

The palatine process of the maxilla extends medially, forming the anterior two-thirds of the hard palate, which is the roof of the mouth.

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What is the Alveolar Process of the Maxilla?

The alveolar process is the part of the maxilla that supports the maxillary teeth. It contains sockets for both the primary and permanent teeth.

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What is the Lacrimal Bone?

The lacrimal bone is a small, rectangular bone located in the medial wall of the orbit, which is the bony cavity that contains the eyeball.

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What is the size and shape of the Lacrimal Bone?

The lacrimal bone is one of the smallest and most fragile bones in the skull. It's thin and rectangular.

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What bones does the Lacrimal Bone articulate with?

The lacrimal bone articulates with the frontal process of the maxilla, orbital plate of the ethmoid bone, frontal bone, and inferior nasal concha.

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What is the Lacrimal Fossa?

The lacrimal fossa is a depression located in the region where the lacrimal bone articulates with the frontal process of the maxilla.

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What is the Vomer Bone?

The vomer bone is a single bone that forms the inferior and posterior part of the nasal septum, which is a thin wall of bone and cartilage that divides the nasal cavity into two halves.

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What is the shape of the Vomer Bone?

The vomer bone is shaped like a plow, with a vertical blade that fits between the maxillary and palatine bones.

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What bones does the Vomer Bone articulate with?

The vomer bone articulates with several bones, including the perpendicular plate of the ethmoid bone, maxillary and palatine bones, sphenoid bone, and septal cartilage.

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What is the Palatine Bone?

The palatine bone is a paired bone that forms the posterior portion of the hard palate, which is the bony roof of the mouth.

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What is the Horizontal Plate of the Palatine Bone?

The horizontal plate of the palatine bone forms the posterior portion of the hard palate, while the nasal cavity is located superior to it.

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What is the Posterior Nasal Spine?

The posterior nasal spine is a projection of bone located at the midline of the hard palate, formed by the fusion of the two horizontal plates of the palatine bones.

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What is the Greater Palatine Foramen?

The greater palatine foramen is a large opening located on the horizontal plate of the palatine bone, allowing passage for blood vessels and nerves.

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How many Maxilla bones are there?

The maxilla bone is a paired bone, meaning there's one on each side of the face.

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How many Lacrimal bones are there?

The lacrimal bone is also a paired bone, with one on each side of the face.

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How many Vomer bones are there?

There is only one vomer bone, which is located at the midline of the nasal septum.

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How many Palatine bones are there?

There are two palatine bones, one on each side of the face.

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What is the Maxillary Sinus?

The maxillary sinus is an air-filled cavity located within the body of the maxilla bone.

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What are the Infraorbital Canal and Foramen of the Maxilla?

The infraorbital canal and foramen are passages located within the maxilla bone that allow nerves and blood vessels to travel from the orbit region to the face.

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What is the Lacrimal Fossa?

The lacrimal fossa is a depression in the region where the lacrimal bone articulates with the frontal process of the maxilla. It is where the lacrimal sac, a small pouch that collects tears, is located.

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What is the Nasal Septum?

The nasal septum is a thin wall of bone and cartilage that divides the nasal cavity into two halves. The vomer bone along with the perpendicular plate of the ethmoid bone form the posterior and inferior part of the nasal septum.

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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.

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