Maxilla Anatomy Quiz

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Questions and Answers

Which bones can the maxilla articulate with?

  • Frontal bone (correct)
  • Occipital bone
  • Mandible (correct)
  • Temporal bone

What forms the upper dental arch?

  • Alveolar Processes (correct)
  • Nasal Processes
  • Palatine Processes
  • Zygomatic Processes

What is one of the main functions of the maxilla?

  • Supports the lower jaw
  • Forms the base of the skull
  • Helps form the nasal cavity (correct)
  • Supports the mandible

Which of the following surfaces is NOT associated with the maxilla?

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

What is the role of the maxillary teeth in relation to other teeth?

<p>They articulate with the teeth of the mandible (C)</p> Signup and view all the answers

How many maxillary bones make up the maxilla?

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

Which internal articulation is associated with the maxilla?

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

What processes are featured in the maxilla?

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

What is the most common facial birth defect in the UK?

<p>Cleft lip and palate (B)</p> Signup and view all the answers

At what age is a cleft lip typically surgically revised?

<p>In the first few months of life (B)</p> Signup and view all the answers

What range can a cleft lip vary from?

<p>A small notch to a wide gap reaching the nose (C)</p> Signup and view all the answers

Which of the following is NOT a common difficulty associated with a cleft palate?

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

Where can a cleft palate occur?

<p>From the back of the mouth to the front or just an opening at the back (D)</p> Signup and view all the answers

Which of the following is NOT a main part of the maxilla?

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

Which of the following describes the articulation of the maxilla with the zygomatic bone?

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

What is the name of the process on the maxilla that articulates with the frontal bone?

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

Which of the following processes of the maxilla forms the hard palate?

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

What is a cleft lip and palate, and what is its implication?

<p>A birth defect in which the upper lip and/or palate does not fuse properly, leading to feeding difficulties and speech problems (D)</p> Signup and view all the answers

What is the function of the zygomatic process of the maxilla?

<p>It helps form the zygomatic arch. (B)</p> Signup and view all the answers

Which bones articulate with the frontal process of the maxilla?

<p>Frontal and lacrimal bones (B)</p> Signup and view all the answers

What does the palatine process of the maxilla form?

<p>Roof of the oral cavity (A)</p> Signup and view all the answers

What is located at the inferior aspect of the maxilla?

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

Which of the following surfaces of the maxilla forms the floor of the orbit?

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

Where is the infra-orbital foramen located on the maxilla?

<p>On the facial surface (A)</p> Signup and view all the answers

The canine eminence is a feature found on which surface of the maxilla?

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

What typical condition is associated with developmental abnormalities of the maxilla?

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

Which part of the maxilla articulates with the nasal cavity?

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

What describes the maxillary sinus?

<p>An air space extending posteriorly to the infratemporal wall (A)</p> Signup and view all the answers

What is the anterior nasal spine associated with?

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

Which surface of the maxilla helps form the upper face?

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

What is the primary role of the palatine process of the maxilla?

<p>Form part of the hard palate (D)</p> Signup and view all the answers

What articulates with the zygomatic process of the maxilla?

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

What is a characteristic of the infra-orbital foramen?

<p>Houses the infra-orbital artery (D)</p> Signup and view all the answers

Flashcards

Maxilla

The upper jawbone in the skull that holds the upper teeth and forms part of the orbits.

Main features of the maxilla

Includes the alveolar process, zygomatic process, and palatine process, crucial for dental and facial structure.

Articulations of the maxilla

The maxilla articulates with several bones including the nasal, zygomatic, and palatine bones.

Processes of the maxilla

Processes of the maxilla include the alveolar, palatine, and frontal processes.

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Cleft lip and palate

A congenital condition where there is an opening or gap in the upper lip or the palate, impacting speech and feeding.

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Functions of Maxilla

Maxilla forms a major part of the upper facial skeleton, including the face and nasal cavity.

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Articulations of Maxilla

Maxilla articulates with several bones including nasal, frontal, and zygomatic bones.

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Maxilla and Mandible

Maxillary teeth articulate with mandible teeth via the Temporomandibular joint.

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Alveolar Process

Alveolar process forms sockets for maxillary teeth and supports the dental arch.

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Internal Articulations

Maxilla articulates internally with the lacrimal bone, ethmoid bone, and inferior concha.

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Maxillary Processes

Maxilla has four processes and surfaces that contribute to its structure.

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Facial Skeleton

The maxilla helps form parts of the facial skeleton and cavities, influencing appearance and function.

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Cleft Lip

A condition where the upper lip has an opening or notch. It can affect one or both sides.

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Cleft Palate

An opening in the roof of the mouth that can extend from the back to the front.

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Frequency of Cleft Conditions

Cleft lip and palate occur in about 1 in 700 births in the UK.

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Surgical Correction

Modern surgery effectively repairs cleft lip and palate with good results.

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Difficulties With Cleft Palate

Associated issues include feeding, hearing, dental, and speech problems.

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Zygomatic process

A bony projection on the lateral aspect of the maxilla that contributes to the zygomatic arch.

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Frontal process of maxilla

A bar of bone extending upwards from the maxilla to connect with the frontal bone, nasal bone, and lacrimal bone.

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Palatine process

A horizontal shelf of bone projecting from the maxilla towards the midline, forming part of the roof of the mouth.

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Infra-orbital foramen

An opening located below the eye socket in the maxilla, allowing nerves and blood vessels to pass.

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Anterior nasal spine

A projection at the front of the maxilla where nasal bones meet.

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Canine eminence

A bony ridge on the maxilla where the canine tooth roots are located.

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Oral cavity roof

The structure formed by the palatine processes of the maxilla.

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Maxillary sinus

A large air-filled space located within the maxilla that is connected to the nasal cavity.

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Orbital surface of maxilla

The surface of the maxilla forming the floor of the orbit.

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Zygomatic arch

A bony structure formed by the zygomatic process of the maxilla and the zygomatic bone.

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Lateral wall of nasal cavity

Formed partly by the medial surface of the maxilla.

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Infratemporal surface

The posterior surface of the maxilla that forms part of the infratemporal region.

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Maxillary bone

The larger bone of the upper jaw that includes the alveolar process and features such as the zygomatic process.

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Study Notes

The Maxilla

  • The maxilla (upper jaw) is formed from two maxillary bones joined together
  • It makes up a large part of the upper facial skeleton
  • It contributes to the shape of the face, including the infra-temporal area, orbital floor, and the sides and roof of the nasal and oral cavities
  • The maxilla articulates with several other bones of the skull: nasal bone, frontal bone, zygomatic bone, vomer, and palatine bone
  • Maxillary teeth articulate with mandibular teeth through the temporomandibular joint

Maxillary Processes and Surfaces

  • The maxilla has four processes
  • It has four surfaces
  • It has foramina

Alveolar Process

  • Forms the sockets and supporting bone for the maxillary teeth
  • The alveolar processes of both maxillae form the upper dental arch

Zygomatic Process (ZP)

  • Located on the lateral surface, it contributes to the zygomatic arch
  • It articulates with the zygoma

Frontal Process of Maxilla (FP)

  • A projection of bone rising from the anterior superior area to connect with the frontal bone
  • It articulates with the frontal bone, nasal bone, and lacrimal bone

Palatine Process of Maxilla

  • A horizontal shelf that extends from the medial aspect of the maxilla towards the midline
  • It forms the roof of the oral cavity and floor of the nasal cavity

Facial View Features of the Maxillary Bones

  • Frontal process
  • Infra-orbital foramen
  • Zygomatic process
  • Anterior nasal spine
  • Canine eminence

Lateral View Features of the Maxillary Bones

  • Frontal process
  • Infra-orbital foramen
  • Anterior nasal spine
  • Alveolar margin
  • Orbital surface
  • Zygomatic process
  • Maxillary bone

Palatal (Inferior) View Features of the Maxillary Bones

  • Incisive foramen (fossa)
  • Palatine process

Medial View Features of the Maxillary Bones

  • Frontal process
  • Maxillary sinus
  • Palatine process
  • Alveolar process

Maxillary Surfaces

  • Orbital surface - forms the floor of the orbit
  • Nasal surface - forms the bulk of the lateral wall of the nasal cavity
  • Infratemporal surface - forms the wall of the infratemporal region
  • Facial surface (anterior surface) - helps form the upper face.

Maxillary Sinus

  • A large air space in each maxillary bone
  • It extends anteriorly to the facial surface, laterally to the zygomatic process, and posteriorly to the infratemporal region
  • It is closely linked to the roots of the maxillary molars

Abnormalities of the Maxilla

  • Cleft Palate: occurs during development when the two halves of the palate don't fuse properly, potentially associated with a cleft lip
  • Cleft lip: can affect one or both sides of the lip; severity ranges from a small notch to a broad gap extending to the nose

Difficulties with Cleft Palate

  • Difficulty feeding
  • Hearing Problems
  • Dental Problems
  • Speech problems

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