Quadrigeminal plate

The quadrigeminal plate, also known as the tectal plate or tectum, is the portion of the midbrain tectum upon which the superior and inferior colliculi sit.

The tectum is the dorsal portion of the midbrain (brainstem) and is derived in embryonic development from the alar plate of the neural tube. Masses in the region of the tectum can cause obstruction of the cerebral aqueduct resulting in obstructive hydrocephalus.

History and etymology

It is derived from the Latin word "tectum" meaning "roof".

Related pathology

Anatomy: Brain
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Article information

rID: 5807
Section: Anatomy
Tag: refs
Synonyms or Alternate Spellings:
  • Tectum
  • Tectal plate

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Cases and figures

  • Figure 1: midbrain (axial) superior colliculi
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  • Figure 2: midbrain (axial) inferior colliculi
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  • Figure 3: midbrain (axial) inferior colliculi
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  • Figure 4: gross pathology brainstem (posterior view)
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