3 mn read What are the pain sensitive intracranial structures? Brain itself is pain insensitive. The following intracranial structures are pain-sensitive: Meningeal arteries Proximal portions of the cerebral arteries Dura at the base of the brain Venous sinuses Cranial nerves 5, 7, 9, and 10, and cervical nerves 1, 2, and 3 What are the mechanisms causing headaches? […]Continue reading "History Taking in Neurosurgery : Headache"
3 mn read What are Arnold Chiari Malformations? These comprise a group of abnormalities involving the rhombencephalon (hindbrain) and the contents of the CV junction With common feature of impaired CSF circulation through the foramen magnum May be Congenital or Acquired Ranging from simple herniation of the cerebellar tonsils through the foramen magnum to complete agenesis of the cerebellum […]Continue reading "Classification of Arnold Chiari Malformations"
2 mn read Spina Bifida Occulta 1. Of the three embryonic layers (ectoderm, mesoderm, and endoderm), the neural structures develop from the ectoderm. (MCQ) 2. The neural tube forms from the neural placode at approximately 21 days of gestation (MCQ) 3. It is important to realize that neural tube defects have already formed by the time pregnancy is diagnosed; thus, […]Continue reading "Spinal Dysraphism : Quick Topic Review and MCQ points"
< 1 mn read Choices: Streptococcus agalactiae Hemophilus influenza Staphylococcus epidermiditis Neisseria meningitidis Explanations: The most common organisms for neonatal meningitis is streptococcus agalactiae Hemophilus influenza was the most common organism before the introduction of vaccination Neisseria meningitidis is most common in adults Staphylococcus epidermidis is responsible for 75 percent of shunt related meningitisContinue reading "Neurosurgery MCQ. 3: Which organism is most often responsible of meningitis in patients with VP shunts?"
< 1 mn read Choices: 1. Subventricular zone 2. Substantia nigra 3. Subgranular zone 4. 1 and 3 Explanation: Neurogenesis in adults occurs in the subventricular zone lining the ventricles and at the subgranular zone at the dentate gyrus of the hippocampus. Neurons and glial cells are produced by multipotent stem cells Contrary to the long-held belief that neurogenesis […]Continue reading "Neurosurgery MCQ. 2 : Which of the following is a site of neurogenesis in adults?"