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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Which of the following cranial structures are insensitive to pain:
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The correct answer is  Answer is B (Choroid plexus): Choroid plexus is a pain insensitive cranial structure. The ventricular ependyma, choroids plexus, pial veins and much of brain parenchyma are not pain producing'- Harrison's Pain Sensitive Intracranial Cranial venous sinuses with afferent veins Aeries at base of brain and aeries of dura including middle meningeal aery Dura around venous sinuses and vessels Falx Cerebri Extracranial Skin Scalp Appendages Periostium Muscles Aeries Mucosa Nerves Trigeminal (Vth) Facial (VIII) Vagal (X) Glossopharyngeal(IX) Second (II) & Third (IIIrd) C.N. Pain Insensitive Intracranial Brain parenchyma Ependyma Choroid plexus Piamater Arachnoid Dura over convexity of skull (Dura around vascular sinuses and vessels is sensitive to pain)