PterygopALATine Fossa

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  • 1/12 Questions

    The nerve of the pterygoid canal is the parasympathetic and sympathetic root of the pterygopalatine ganglion.

    • True
    • False
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About This Quiz

Explore the Pterygopalatine Fossa, understanding its significance as a relay and distribution center. Learn the contents, including nerves and ganglions, and their interconnected roles. Ideal for students in medical fields enhancing their anatomical knowledge.

Head And Neck Anatomy Quizzes & Trivia

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  • 2. 

    Which nerve passes through the foramen rotundum into the fossa?

    Explanation
    The maxillary nerve passes through the foramen rotundum into the fossa.

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  • 3. 

    All the nerves leaving the pterygopalatine fossa have parasympathetic, sympathetic, and sensory fibers.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement is true because the pterygopalatine fossa is a small space located in the skull that contains several nerves. These nerves include parasympathetic fibers, which control involuntary functions, sympathetic fibers, which control the body's response to stress, and sensory fibers, which transmit sensory information. Therefore, all the nerves leaving the pterygopalatine fossa have these three types of fibers.

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  • 4. 

    What is the sympathetic fiber source of the nerve to the pterygoid canal?

    Correct Answer
    deep petrosal nerve
    Explanation
    The deep petrosal nerve is the sympathetic fiber source of the nerve to the pterygoid canal. It carries sympathetic fibers from the superior cervical ganglion to the pterygopalatine ganglion, which then innervates the pterygoid canal.

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  • 5. 

    What is the communication between the pterygopalatine fossa and the nose?

    Correct Answer
    sphenopalatine foramen
    Explanation
    The communication between the pterygopalatine fossa and the nose is through the sphenopalatine foramen. The sphenopalatine foramen is a small opening located in the posterior part of the nasal cavity, near the superior nasal concha. It serves as a passageway for blood vessels and nerves that supply the nasal cavity and surrounding structures.

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  • 6. 

    What is the communication between the pterygopalatine and infratemporal fossae?

    Correct Answer
    pterygomaxillary fissure
    Explanation
    The pterygomaxillary fissure is the communication between the pterygopalatine and infratemporal fossae. It is a narrow gap located between the pterygoid process of the sphenoid bone and the maxilla. This fissure allows for the passage of nerves, blood vessels, and other structures between these two anatomical regions.

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  • 7. 

    The maxillary nerve is the ___________ root of the pterygopalatine ganglion.

    Correct Answer
    sensory
    Explanation
    The maxillary nerve is responsible for carrying sensory information from the upper jaw, teeth, nasal cavity, and parts of the face to the brain. It is one of the three branches of the trigeminal nerve. The pterygopalatine ganglion is a parasympathetic ganglion located in the pterygopalatine fossa. Since the maxillary nerve is primarily sensory in nature, it provides the sensory root for the pterygopalatine ganglion.

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  • 8. 

    What is the parasympathetic fiber source of the nerve to the pterygoid canal?

    Correct Answer
    greater petrosal nerve
    Explanation
    The greater petrosal nerve is the parasympathetic fiber source of the nerve to the pterygoid canal. It arises from the facial nerve and carries parasympathetic fibers that innervate the lacrimal gland and the glands of the nasal cavity and palate. It passes through the pterygoid canal to reach the pterygopalatine ganglion, where it synapses before the postganglionic fibers continue to their respective targets.

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  • 9. 

    The maxillary nerve exits the fossa through the ________________.

    Correct Answer
    inferior orbital fissure
    Explanation
    The maxillary nerve exits the fossa through the inferior orbital fissure. The inferior orbital fissure is a small opening located in the floor of the orbit, which allows the maxillary nerve to pass from the cranial cavity into the orbit. This nerve is one of the three major branches of the trigeminal nerve, responsible for providing sensory innervation to the upper teeth, upper lip, and the skin of the face over the maxillary region.

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  • 10. 

    What are the contents of the fossa?

    Correct Answer
    maxillary nerve, maxillary artery, pterygopalatine ganglion
    Explanation
    The fossa contains the maxillary nerve, maxillary artery, and pterygopalatine ganglion. These structures are all located in the pterygopalatine fossa, which is a small space in the skull. The maxillary nerve is a branch of the trigeminal nerve that supplies sensation to the upper teeth, upper lip, and cheek. The maxillary artery is a branch of the external carotid artery that supplies blood to the face and the pterygopalatine ganglion is a cluster of nerve cell bodies involved in the autonomic control of the facial region.

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  • 11. 

    Which nerve (besides the maxillary) enters the fossa?

    Correct Answer
    nerve of the pterygoid canal
    Explanation
    The nerve of the pterygoid canal is the nerve that enters the fossa, besides the maxillary nerve. This suggests that there is another nerve, known as the nerve of the pterygoid canal, that also enters the fossa.

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  • 12. 

    In what three ways is the fossa important?

    Correct Answer
    rendezvous, relay, distribution center
    Explanation
    The fossa is important as a rendezvous point because it serves as a meeting place for individuals of the same species. It is also a relay center, facilitating communication and exchange of information between different groups. Additionally, the fossa acts as a distribution center, as it plays a crucial role in the dispersal of seeds and nutrients throughout its habitat.

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  • Mar 21, 2023
    Quiz Edited by
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  • Apr 02, 2011
    Quiz Created by
    Kbennet6
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