Falx Cerebri

Falx Cerebri

Question 1. Falx cerebri
Answer:

• It is large sickle-shapes fold of duramater
• It occupies the median longitudinal fissure between the two cerebral hemispheres

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Ends:

1. Anterior end

• It is narrow & attached to the crista galli

2. Posterior end

• It is broad & attached to the upper surface of the tentorium cerebelli

Falx cerebri anatomy

Margins:

1. Upper convex margin

• Attached to the lips of the sagittal sulcus

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2. Lower concave margin

• It is free

Surfaces:

• Left & right related to the medial surface of the cerebral hemisphere

Location of falx cerebri

Venous sinuses present in it:

• Superior Sagittal sinus
• Inferior Sagittal sinus
• Straight sinus

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“Factors influencing success with falx cerebri studies: Q&A”

Question 2. Meckel’s cave
Answer:

• It is a recess of duramater present i.r.t the attached margin of the tentorium

Formed by:

• Evagination of the inferior layer of the tentorium over the trigeminal impression on the petrous temporal bone

Content:

• Trigeminal ganglion

“Steps to explain the anatomy of the falx cerebri: Dural attachment vs meningeal layers: Q&A guide”

Question 12. Emissary vein
Answer:

• These veins connect intracranial venous sinuses with extracranial veins
• They try to relieve raised intracranial pressure

“Role of the falx cerebri in dividing cerebral hemispheres: Questions answered”

Applied anatomy:

• Infection may reach through the emissary veins into cranial venous sinuses

Various emissary veins:

• Parietal emissary vein Mastoid emissary vein Condylar emissary vein