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Questions and Answers
Which of the following is the correct classification for the sphenoid bone?
Which of the following is the correct classification for the sphenoid bone?
- Unpaired bone (correct)
- Sesamoid bone
- Irregular paired bone
- Paired bone
What is a common nickname for the sphenoid bone, referencing its shape?
What is a common nickname for the sphenoid bone, referencing its shape?
- Wasp/butterfly bone (correct)
- Skull cap bone
- Facial bone
- Cranial base bone
Which of these is a main part of the sphenoid bone?
Which of these is a main part of the sphenoid bone?
- Lacrimal
- Body (correct)
- Mandible
- Nasal
Which of the following is another main part of the sphenoid bone?
Which of the following is another main part of the sphenoid bone?
What is another key component of the sphenoid?
What is another key component of the sphenoid?
Which of the following processes is part of the sphenoid bone?
Which of the following processes is part of the sphenoid bone?
What canal is associated with the sphenoid bone?
What canal is associated with the sphenoid bone?
Which of the following openings is found on the sphenoid bone?
Which of the following openings is found on the sphenoid bone?
Which fissure is a landmark located on the sphenoid bone?
Which fissure is a landmark located on the sphenoid bone?
Which foramen is located in the sphenoid bone?
Which foramen is located in the sphenoid bone?
Which nerve passes through the Foramen Rotundum?
Which nerve passes through the Foramen Rotundum?
What division of the trigeminal nerve transmits through the Foramen Ovale?
What division of the trigeminal nerve transmits through the Foramen Ovale?
What vessels transmits through the Foramen Spinosum?
What vessels transmits through the Foramen Spinosum?
Which anatomical structure is the sphenoid bone?
Which anatomical structure is the sphenoid bone?
What is transmitted through the optic canal?
What is transmitted through the optic canal?
What is the function of foramen rotundum?
What is the function of foramen rotundum?
What fossa does the maxillary divison of the trigeminal nerve trasmit to from the middle cranial fossa via the foramen rotundum?
What fossa does the maxillary divison of the trigeminal nerve trasmit to from the middle cranial fossa via the foramen rotundum?
What fossa does the mandibular divison of the trigeminal nerve trasmit to from the middle cranial fossa via the foramen ovale?
What fossa does the mandibular divison of the trigeminal nerve trasmit to from the middle cranial fossa via the foramen ovale?
What division of the trigeminal nerve is the meningeal branch associated with?
What division of the trigeminal nerve is the meningeal branch associated with?
What foramen transmits the middle meningeal vessels?
What foramen transmits the middle meningeal vessels?
Flashcards
Sphenoid Bone
Sphenoid Bone
An unpaired bone, known for its complex, irregular shape, resembling a wasp or butterfly.
Body of Sphenoid Bone
Body of Sphenoid Bone
The main, central part of the sphenoid bone.
Lesser Wings of Sphenoid
Lesser Wings of Sphenoid
A pair of small, triangular wings that project laterally from the anterior part of the sphenoid body.
Greater Wings of Sphenoid
Greater Wings of Sphenoid
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Pterygoid Processes
Pterygoid Processes
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Optic Canal
Optic Canal
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Superior Orbital Fissure
Superior Orbital Fissure
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Foramen Rotundum
Foramen Rotundum
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Foramen Ovale
Foramen Ovale
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Foramen Spinosum
Foramen Spinosum
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Lateral Pterygoid Plate
Lateral Pterygoid Plate
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Medial Pterygoid Plate
Medial Pterygoid Plate
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Study Notes
Sphenoid Bone: Overview
- It is an unpaired bone.
- Recognized as the most complex bone because of its irregular shape.
- Commonly referred to as the wasp or butterfly bone due to its distinctive shape.
Anatomical Structures of the Sphenoid Bone
- The sphenoid bone consists of four main parts: the body, lesser wing, greater wing, and Pterygoid processes.
Significance of Foramen
- Foramen Rotundum transmits the maxillary division of the trigeminal nerve, routing it 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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