Headache can be produced by A. Dilatation of intracranial blood vesse

1.	Headache can be produced by A. Dilatation of intracranial blood vessels.B. Constriction of extracranial blood vessels. C. Meningeal irritation. D. Blood in the cerebrospinal fluid. E. Loss of cerebrospinal fluid following lumbar puncture.
Answer» A. True Probably due to pain receptors in vessel walls stimulated by stretch. B. False Dilatation of these extracranial vessels occurs in patients with throbbing migraine-type headaches that are relieved by certain vasoconstrictor agents. C. True This causes the severe pain and neck stiffness in early meningitis. D. True Surprisingly, blood also irritates the meninges to cause headache and neck stiffness. E. True The brain tends to sag in the cranium and pull on pain receptors in the meninges.

Headache can be produced by A. Dilatation of intracranial blood vessels.B. Constriction of extracranial blood vessels. C. Meningeal irritation. D. Blood in the cerebrospinal fluid. E. Loss of cerebrospinal fluid following lumbar puncture.

Answer»

A. True Probably due to pain receptors in vessel walls stimulated by stretch.

B. False Dilatation of these extracranial vessels occurs in patients with throbbing migraine-type headaches that are relieved by certain vasoconstrictor agents.

C. True This causes the severe pain and neck stiffness in early meningitis.

D. True Surprisingly, blood also irritates the meninges to cause headache and neck stiffness.

E. True The brain tends to sag in the cranium and pull on pain receptors in the meninges.

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