终板池（cistern of the lamina terminalis/lamina terminalis cistern）

The cistern of the lamina terminalis is one of the unpaired CSF-filled subarachnoid cisterns.

The lamina terminalis forms the anterior wall of the third ventricle and anterior boundary of the hypothalamus.. Gross anatomy. It is a thin membrane that stretches between the dorsal surface of the optic chiasm to the anterior commissure 1.Anteriorly to the lamina terminalis is the lamina terminalis cistern, which contains the anterior cerebral artery and anterior communicating artery complex.

Gross anatomy

The cistern of lamina terminalis lies anterior to the anterior wall of the 3^rd ventricle in the midline and appears like a high-top tent with diamond-shaped floor¹. It acts as a connection between peri-callosal and interpeduncular cistern ²

Boundaries

The following structures contribute to the walls of the cistern of lamina terminalis.

• lateral walls: gyrus rectus and bilateral septal areas

• posterior and posteroinferior walls: lamina terminalis

• floor: arachnoid between the optic nerves and superior surface of optic chiasm

• anterior: converged pia mater on the lateral walls of the cistern of lamina terminalis

Contents

• anterior cerebral arteries (A1 and A2 segments)

• anterior communicating artery

• recurrent artery of Heubner

• subcallosal artery

• orbito-frontal arteries

Related pathology

• anterior cerebral artery and anterior communicating artery aneurysms

  

  Sketch of intraoperative view of the lamina terminalis cistern through the various surgical corridors. ON-optic nerve, Ch-optic chiasm, PS-pituitary stalk, A1-anterior cerebral artery segment 1, A2 − anterior cerebral artery segment 2, ACoM-anterior communicating artery.