Definition

1. Noun:
   • A bony or cartilaginous structure forming the dorsal part of a vertebra: The neural arch is the arch of bone that projects from the back (dorsal side) of the vertebral body (centrum) and surrounds the spinal cord to protect it.

Usage

• The term is used primarily in anatomy, zoology, and paleontology to describe a specific anatomical feature of vertebrae in vertebrates.
• It is a singular, countable noun. The plural form is "neural arches."

Examples

• Noun:
  • A complete vertebra consists of a centrum and a neural arch.
  • The fossil showed a well-preserved neural arch.
  • Damage to the neural arch can compromise the protection of the spinal cord.

Advanced Usage

• In comparative anatomy, the structure and size of the neural arch can indicate the type of movement an animal's spine was capable of.
• The term is often used in conjunction with "centrum" (the body of the vertebra) and "neural spine" (the projection from the top of the neural arch).

Variants and Related Words

• Vertebral arch: A synonym for neural arch.
• Neural spine (n): The spinous process projecting dorsally from the neural arch.
• Hemal arch (n): A similar arch found on the ventral side of caudal vertebrae in many vertebrates, enclosing blood vessels.

Synonyms

• Vertebral arch: The most direct synonym.

Related Phrases / Compound Terms

• Neural arch pedicle: One of the two bony pillars (left and right) that connect the neural arch to the vertebral body.
• Neural arch lamina: The flattened plate of bone forming the roof of the neural arch.

Noun

1. a structure arising dorsally from a vertebral centrum and enclosing the spinal cord