Definition

1. Noun:
   • A specific anatomical groove in the brain: The parieto-occipital sulcus is a prominent, deep groove or furrow located on the medial surface of each cerebral hemisphere, near its posterior end. It serves as a primary landmark that demarcates the boundary between the parietal lobe and the occipital lobe of the brain.

Usage Examples

• Noun:
  • The neurosurgeon carefully identified the parieto-occipital sulcus before proceeding with the operation.
  • In the MRI scan, the parieto-occipital sulcus was clearly visible, separating the two lobes.
  • Damage to the cortex near the parieto-occipital sulcus can affect both visual and spatial processing.

Advanced Usage

• "The depth of the parieto-occipital sulcus": Refers to the measurement or anatomical characteristic of this specific brain fissure.
  • The study correlated cognitive function with the depth of the parieto-occipital sulcus.

Variants and Related Words

• Parieto-occipital fissure: An alternative, though less common, term for the same anatomical structure.
• Calcarine sulcus: A different sulcus in the occipital lobe, often mentioned in conjunction with the parieto-occipital sulcus as they sometimes merge.

Synonyms

• Parieto-occipital fissure (in specific anatomical contexts).

Notes on Meaning

This term is highly specific to neuroanatomy. It does not have figurative meanings, idioms, or phrasal verbs associated with it. Its usage is almost exclusively academic, clinical, or scientific.

Noun

1. a sulcus near the posterior end of each hemisphere that separates the parietal lobes and the occipital lobes in both hemispheres