Cranial Floor Pt 1

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| By Miles.rice
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Miles.rice
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Quizzes Created: 6 | Total Attempts: 9,858
Questions: 6 | Attempts: 209

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Cranial Nerve Quizzes & Trivia

Questions and Answers
  • 1. 

    What is number 1 (canal)

    Explanation
    The correct answer is "Optic canal." The optic canal is a passageway located in the skull that allows for the passage of the optic nerve from the eye to the brain. It is situated in the sphenoid bone and is an essential structure for the transmission of visual information.

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  • 2. 

    What is number 2 (foramen)

    Explanation
    The correct answer is Foramen rotundum. The foramen rotundum is a small opening located in the sphenoid bone of the skull. It is one of the several foramina (openings) in the skull that allow the passage of nerves and blood vessels. The foramen rotundum specifically allows the passage of the maxillary nerve, which is a branch of the trigeminal nerve. This nerve is responsible for providing sensation to the face, particularly the upper jaw, teeth, and nasal cavity.

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  • 3. 

    What is number 3 (foramen)

    Explanation
    The foramen ovale is a small opening in the interatrial septum of the heart that allows blood to bypass the lungs in fetal development. It connects the right atrium to the left atrium, and normally closes shortly after birth. The foramen ovale is an important structure in the developing fetus as it helps to direct oxygenated blood from the placenta to the systemic circulation, bypassing the non-functioning lungs.

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  • 4. 

    What is number 4 (foramen)

    Explanation
    The correct answer is "Foramen lacerum." The foramen lacerum is a small triangular opening located on the base of the skull, between the sphenoid, temporal, and occipital bones. It is covered by a layer of cartilage in a living person, making it appear closed. The foramen lacerum allows for the passage of small blood vessels and nerves.

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  • 5. 

    What is number 5 (meatus)

    Explanation
    The internal acoustic meatus is a small opening in the temporal bone of the skull. It is located on the posterior surface of the petrous part of the temporal bone. This meatus allows for the passage of the facial nerve and the vestibulocochlear nerve, also known as the cranial nerves VII and VIII respectively. These nerves are important for hearing, balance, and facial movement.

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  • 6. 

    What is number 6 (foramen)

    Explanation
    The correct answer is Jugular foramen. The jugular foramen is a large opening located at the base of the skull, specifically in the temporal bone. It is situated between the petrous part of the temporal bone and the occipital bone. The jugular foramen allows for the passage of important structures such as the internal jugular vein, glossopharyngeal nerve, vagus nerve, and accessory nerve. This opening is crucial for the proper functioning of these structures and plays a significant role in the circulatory and nervous systems.

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