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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?
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?
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?
Which foramen transmits the middle meningeal vessels?
Which foramen transmits the middle meningeal vessels?
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Which division of the trigeminal nerve is transmitted through the foramen ovale?
Which division of the trigeminal nerve is transmitted through 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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