Podcast
Questions and Answers
A patient presents with numbness in the upper lip and cheek following a facial fracture. Which foramen is MOST likely affected, based on the sensory distribution?
A patient presents with numbness in the upper lip and cheek following a facial fracture. Which foramen is MOST likely affected, based on the sensory distribution?
- Incisive foramen
- Infraorbital foramen (correct)
- Mental foramen
- Foramen ovale
A surgeon is planning a procedure involving the removal of a tumor located near the anterior nasal spine. Which of the following structures is at the HIGHEST risk of being damaged during the procedure?
A surgeon is planning a procedure involving the removal of a tumor located near the anterior nasal spine. Which of the following structures is at the HIGHEST risk of being damaged during the procedure?
- Zygomatic process of the maxilla
- Frontal process of the maxilla
- Palatine process of the maxilla
- Intermaxillary suture (correct)
During a surgical repair of a cleft palate, which anatomical structure's proper alignment and fusion is the MOST critical for restoring the integrity of the hard palate?
During a surgical repair of a cleft palate, which anatomical structure's proper alignment and fusion is the MOST critical for restoring the integrity of the hard palate?
- Alveolar process
- Frontal process
- Palatine process (correct)
- Zygomatic process
A patient presents with a chronic sinus infection. Imaging reveals a blockage of the drainage pathway from the maxillary sinus. Which of the following anatomical structures MOST directly communicates with the maxillary sinus, allowing for drainage?
A patient presents with a chronic sinus infection. Imaging reveals a blockage of the drainage pathway from the maxillary sinus. Which of the following anatomical structures MOST directly communicates with the maxillary sinus, allowing for drainage?
Following a blow to the face, a patient exhibits enophthalmos (sunken eye) and diplopia (double vision). Which of the following bones, articulating with the maxilla, is MOST likely fractured, contributing to these symptoms?
Following a blow to the face, a patient exhibits enophthalmos (sunken eye) and diplopia (double vision). Which of the following bones, articulating with the maxilla, is MOST likely fractured, contributing to these symptoms?
A patient requires a dental implant in the upper jaw. The surgeon must carefully assess the volume and density of which structure within the maxilla to ensure successful implant placement?
A patient requires a dental implant in the upper jaw. The surgeon must carefully assess the volume and density of which structure within the maxilla to ensure successful implant placement?
During a rhinoplasty, a surgeon aims to reshape the nasal bridge. Which process of the maxilla directly contributes to the bony structure that supports the lower aspect of the nose?
During a rhinoplasty, a surgeon aims to reshape the nasal bridge. Which process of the maxilla directly contributes to the bony structure that supports the lower aspect of the nose?
A forensic anthropologist is examining a skull and notes that the intermaxillary suture is completely fused with no visible line. This MOST likely indicates that the individual was:
A forensic anthropologist is examining a skull and notes that the intermaxillary suture is completely fused with no visible line. This MOST likely indicates that the individual was:
A patient is diagnosed with a tumor that has eroded the floor of the orbit, extending into the maxillary sinus. Which wall of the maxillary sinus has been MOST directly affected by the tumor's growth?
A patient is diagnosed with a tumor that has eroded the floor of the orbit, extending into the maxillary sinus. Which wall of the maxillary sinus has been MOST directly affected by the tumor's growth?
A patient reports loss of sensation of the anterior hard palate after a surgical procedure. Damage to what structure during the procedure is the MOST likely cause?
A patient reports loss of sensation of the anterior hard palate after a surgical procedure. Damage to what structure during the procedure is the MOST likely cause?
Flashcards
Maxilla
Maxilla
The maxillary bone, forming the upper jaw and contributing to the orbit, nose, and palate.
Frontal process of maxilla
Frontal process of maxilla
Projects upwards to articulate with the frontal bone.
Zygomatic process of maxilla
Zygomatic process of maxilla
Projects laterally to articulate with the zygomatic bone (cheekbone).
Alveolar process of maxilla
Alveolar process of maxilla
Contains the sockets for the upper (maxillary) teeth.
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Palatine process of maxilla
Palatine process of maxilla
Forms the anterior part of the hard palate (roof of the mouth).
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Infraorbital foramen
Infraorbital foramen
Located below the orbit, transmits the infraorbital nerve and vessels.
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Incisive foramen
Incisive foramen
Located in the midline of the hard palate, transmits the nasopalatine nerve and vessels.
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Maxillary Sinus
Maxillary Sinus
Air-filled cavity within the maxilla, communicating with the nasal cavity.
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Cleft palate
Cleft palate
Failure of the palatine processes to fuse during development.
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Sinusitis
Sinusitis
Inflammation of the maxillary sinus.
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- The maxilla is also known as the maxillary bone
Anatomy
- The maxilla forms the upper jaw
- It contributes to the formation of the:
- Orbit
- Nose
- Palate
- The maxilla contains the maxillary sinus
- Paired bone that fuses at the intermaxillary suture
- The maxilla articulates with:
- Nasal bone
- Frontal bone
- Lacrimal bone
- Ethmoid bone
- Palatine bone
- Zygomatic bone
- Vomer
- Inferior nasal concha
Parts of the Maxilla
- Body: The main part of the maxilla
- Frontal process: Projects upwards to articulate with the frontal bone
- Zygomatic process: Projects laterally to articulate with the zygomatic bone
- Alveolar process: Contains the sockets for the maxillary teeth
- Palatine process: Forms the anterior part of the hard palate
Foramina and Canals
- Infraorbital foramen: Located below the orbit, transmits the infraorbital nerve and vessels
- Incisive foramen: Located in the midline of the hard palate, transmits the nasopalatine nerve and vessels
- Maxillary sinus: A large air-filled cavity within the body of the maxilla, that communicates with the nasal cavity
Functions
- Supports the upper teeth
- Forms part of the facial skeleton
- Contributes to the formation of the nasal cavity, orbit, and palate
- Contains the maxillary sinus, which helps to humidify and filter air, as well as lighten the skull
Clinical Significance
- Maxillary fractures are common facial injuries, often resulting from trauma
- Cleft palate results from failure of the palatine processes to fuse during development
- Sinusitis: Inflammation of the maxillary sinus
- Tumors can arise within the maxilla, such as ameloblastomas or carcinomas
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