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Questions and Answers
What is a characteristic feature of the sphenoid bone?
What is a characteristic feature of the sphenoid bone?
- It is shaped like a rectangle.
- It is the largest bone in the skull.
- It is paired bone.
- It has a complex irregular shape. (correct)
Which of the following foramina is responsible for transmitting the maxillary division of the trigeminal nerve?
Which of the following foramina is responsible for transmitting the maxillary division of the trigeminal nerve?
- Foramen Ovale
- Foramen Spinosum
- Foramen Rotundum (correct)
- Foramen Magnum
What is another common name for the sphenoid bone due to its shape?
What is another common name for the sphenoid bone due to its shape?
- Pterygoid bone
- Winged bone
- Cranial bone
- Wasp/butterfly bone (correct)
Which foramen transmits the middle meningeal vessels?
Which foramen transmits the middle meningeal vessels?
Which division of the trigeminal nerve is transmitted through the foramen ovale?
Which division of the trigeminal nerve is transmitted through the foramen ovale?
Flashcards
What is the sphenoid bone's distinctive shape?
What is the sphenoid bone's distinctive shape?
The sphenoid bone is known for its complex shape, resembling a butterfly or wasp.
Which foramen transmits the maxillary division of the trigeminal nerve?
Which foramen transmits the maxillary division of the trigeminal nerve?
The Foramen Rotundum is a passageway in the sphenoid bone that allows the maxillary division of the trigeminal nerve to pass through.
What foramen carries the middle meningeal vessels?
What foramen carries the middle meningeal vessels?
The Foramen Spinosum is a small opening in the sphenoid bone through which the middle meningeal vessels travel.
Which division of the trigeminal nerve travels through the Foramen Ovale?
Which division of the trigeminal nerve travels through the Foramen Ovale?
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What is the purpose of the Foramen Ovale?
What is the purpose of the Foramen Ovale?
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Study Notes
Sphenoid Bone
- Unpaired bone
- Most complex bone in the skull
- Irregular shape
- Known as wasp/butterfly bone due to its shape
Anatomical Structure
- Four main parts:
- Body
- Greater wings
- Lesser wings
- Pterygoid processes
Foramina and Bony Landmarks
- Foramen Rotundum: Transmits the maxillary division of the trigeminal nerve from the middle cranial fossa into the Pterygopalatine fossa.
- Foramen Ovale: Transmits the mandibular division of the trigeminal nerve from the middle cranial fossa to the Infratemporal fossa.
- Foramen Spinosum: Transmits the middle meningeal vessels and the meningeal branch of the mandibular division of the trigeminal nerve.
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