Maxillary Bones (Maxilla)
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Questions and Answers

Which part of the maxilla forms the majority of the hard palate?

  • Alveolar process
  • Palatine process (correct)
  • Zygomatic process
  • Frontal process

    • What is the function of the infraorbital canal and foramen?

  • To articulate with the frontal bone
  • To supply blood to the maxillary teeth
  • To connect with the zygomatic bone
  • To pass from the orbit region to the face region (correct)

    • How many maxillary bones (maxillae) are there?

  • 2 (correct)
  • 3
  • 4
  • 1

    • Where is the incisive foramen located?

    <p>In the palatine process (B)</p> Signup and view all the answers

    What is resorbed when a tooth is lost?

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

    Which bone forms the bridge of the nose?

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

    How many nasal bones are there?

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

    What does the lacrimal bone form a small portion of?

    <p>The medial wall of the orbit (B)</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

    What structure does the perpendicular plate of the palatine bone help form?

    <p>The wall of the pterygopalatine fossa and the lateral wall of the nasal cavity (D)</p> Signup and view all the answers

    How many inferior nasal conchae are there?

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

    Which bone articulates with the frontal process of the maxilla, orbital plate of the ethmoid bone, the frontal bone, and the inferior nasal concha?

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

    Which bone forms the posterior inferior part of the nasal septum?

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

    Which part of the palatine bone helps form the pterygopalatine fossa and the lateral wall of the nasal cavity?

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

    Which bone forms part of the lateral wall of the nasal cavity and articulates with the maxilla and other bones?

    <p>Inferior nasal concha (C)</p> Signup and view all the answers

    How many nasal bones are there?

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

    Which bone forms the lower jaw and has all the muscles of mastication attached to it?

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

    What is the main function of the maxillary paranasal sinus?

    <p>Serving as a cavity within the maxilla (A)</p> Signup and view all the answers

    Which bone articulates with the maxilla to form the majority of the hard palate?

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

    Where does the frontal process of the maxilla extend to articulate with other bones?

    <p>Superiorly (B)</p> Signup and view all the answers

    Which part of the maxilla supports all of the maxillary teeth?

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

    What is the location of the incisive foramen within the maxilla?

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

    Which bone forms the bridge of the nose?

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

    Flashcards

    Maxillary Body

    The main part of the maxilla, shaped like a pyramid, houses the maxillary sinus.

    Maxillary Frontal Process

    A part of the maxilla that extends upwards and connects with other bones like the nasal, frontal, and ethmoid bones.

    Maxillary Zygomatic Process

    A projection of the maxilla that links with the cheekbone (zygomatic bone).

    Maxillary Palatine Process

    An extension of the maxilla that makes up a large part of the roof of your mouth (hard palate).

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    Maxillary Alveolar Process

    The part of the maxilla that holds your upper teeth.

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    Nasal bone

    The bone that makes up the bridge of your nose.

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    Lacrimal bone

    A small, delicate bone that forms part of the inner wall of the eye socket.

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    Vomer bone

    A bone shaped like a plow that forms the lower, back part of your nasal septum (the wall that divides your nostrils).

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    Palatine bone

    A L-shaped bone that forms part of your nasal cavity and the roof of your mouth.

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    Palatine Perpendicular Plate

    A vertical part of the palatine bone that forms part of the nasal cavity wall.

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    Palatine Horizontal Plate

    A flat part of the palatine bone that forms the back part of the roof of your mouth.

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    Inferior Nasal Concha

    A small, curved bone that sits inside your nasal cavity and helps to warm and filter air.

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    Mandible

    The bone that makes up your lower jaw, also called the jawbone.

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    Mandible Body

    The main part of the mandible, shaped like a horseshoe.

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    Maxillary Sinus

    The largest sinus located within the maxilla.

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    Maxillary Paranasal Sinus

    Where the maxillary sinus is found.

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    Incisive Foramen

    The opening in the anterior portion of the palatine process of the maxilla.

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    Sphenopalatine Foramen

    A hole on the superior border of the perpendicular plate of the palatine bone.

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    Lacrimal Fossa

    The gap between the palatine process and the alveolar process.

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    Orbital Process

    A small projection on the perpendicular plate of the palatine bone.

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    Pyramidal Process

    A small, triangular part of the palatine bone that extends down.

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    Nasomaxillary Suture

    The part where the maxilla connects with the frontal bone.

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    Foramen

    A small hole that allows blood vessels and nerves to pass through.

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    Study Notes

    Maxillary Bones (Maxilla)

    • Form the majority of the skeleton of the face and the upper jaw
    • Contain the maxillary paranasal sinus
    • Articulate with the opposite maxilla and the frontal, nasal, vomer, and ethmoid bones; inferior nasal concha; palatine, lacrimal, and zygomatic bones; and the septal and nasal cartilages
    • 2 maxilla bones (maxillae)
    • Parts:
      • Body: major part of the bone, shaped like a pyramid, contains the maxillary paranasal sinus
      • Frontal process: extends superiorly to articulate with the nasal, frontal, ethmoid, and lacrimal bones, forms the anterior boundary of the lacrimal fossa
      • Zygomatic process: extends laterally to articulate with the maxillary process of the zygomatic bone
      • Palatine process: extends medially to form the majority of the hard palate, articulates with the palatine process of the opposite side and the horizontal plate of the palatine bone, incisive foramen is located in the anterior portion
      • Alveolar process: the part of the maxilla that supports all of the maxillary teeth, extends inferiorly from the maxilla, each maxilla contains 5 primary and 8 permanent teeth, alveolar bone is resorbed when a tooth is lost

    Nasal Bone

    • Inferior portion forms the superior margin of the nasal aperture
    • Forms the bridge of the nose
    • Articulates with the nasal bone of the opposite side, the nasal portion of the frontal bone, the frontal process of the maxilla, and the perpendicular plate of the ethmoid
    • Inferior portion of the nasal bones attaches with the lateral nasal cartilages and septal cartilage
    • 2 nasal bones

    Lacrimal Bone

    • Small and rectangular in shape, thin and fragile
    • Forms a small portion of the medial wall of the orbit
    • Articulates with the frontal process of the maxilla, orbital plate of the ethmoid bone, the frontal bone, and the inferior nasal concha
    • The region that articulates with the frontal process of the maxilla forms the lacrimal fossa, the location of the lacrimal sac
    • The inferior part of the lacrimal forms a small portion of the lateral wall of the nasal cavity
    • 2 lacrimal bones

    Vomer

    • Shaped like a "plough"
    • Forms the posterior inferior part of the nasal septum
    • Articulates with the perpendicular plate of the ethmoid, maxilla, palatine, and sphenoid bones and septal cartilage
    • Posterior border does not articulate with any other bone
    • 1 vomer bone

    Palatine Bone

    • Forms part of the nasal cavity and the hard palate, L-shaped
    • 2 palatine bones
    • Parts:
      • Perpendicular plate: vertical rectangle, notch on the superior border articulates with the sphenoid bone, forming the sphenopalatine foramen, small orbital process helps form part of the orbit, forms part of the wall of the pterygopalatine fossa and the lateral wall of the nasal cavity
      • Horizontal plate: forms the posterior portion of the hard palate, superior to the horizontal plate is the nasal cavity, on the medial part is the posterior nasal spine, greater palatine foramen is on this plate
      • Pyramidal process: extends posteriorly and inferiorly from the junction of the perpendicular and horizontal plates, lesser palatine foramina are located here

    Inferior Nasal Concha

    • Curved bone that forms part of the lateral wall of the nasal cavity
    • 2 inferior nasal conchae
    • Lies within a curve in the lateral wall of the nasal cavity
    • Articulates with the maxilla and perpendicular plate of the palatine, lacrimal, and ethmoid bones

    Mandible

    • Forms the lower jaw
    • Described as horse shoe shaped
    • All muscles of mastication attach to the mandible
    • 1 mandible
    • Parts:
      • Body: mental foramen is located on the body

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    Description

    Learn about the characteristics and parts of the maxilla bone, which forms most of the face and upper jaw. Understand its articulations with other facial bones and structures. Explore the two parts of the maxilla: body and processes.

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