Definition

1. Noun:
   • A neural structure of the vertebrate forebrain involved in olfaction: The olfactory bulb is one of two small, bulb-shaped structures located at the end of the olfactory nerve. It is the primary processing center for smell information received from the nose before sending it to other brain regions.

Usage

• The term olfactory bulb is a specific anatomical term used in neuroscience, biology, and medicine.
• It is typically used in singular or plural form to refer to the paired structures.
• It functions as a noun, often as the subject or object of a sentence describing brain anatomy or sensory processing.

Examples

• Noun:
  • The olfactory bulb receives signals directly from the sensory neurons in the nasal epithelium.
  • Damage to the olfactory bulbs can result in a loss of the sense of smell.
  • In many animals, the olfactory bulb is relatively large compared to other brain regions.

Advanced Usage

• "Olfactory bulb plasticity": Refers to the ability of the olfactory bulb to change and reorganize its neural connections in response to new smells or experiences.
• "Accessory olfactory bulb": A smaller, separate structure found in some animals that processes pheromone signals.

Variants and Related Words

• Olfactory (adjective): Relating to the sense of smell. (e.g., ).
• Bulb (noun): A rounded, swollen part of a structure. In this context, it refers specifically to the neural structure.
• Olfactory nerve (noun): The first cranial nerve, which transmits smell information from the nose to the olfactory bulb.
• Olfactory cortex (noun): The region of the brain that receives processed information from the olfactory bulb.

Synonyms

• There are no direct common synonyms for this precise anatomical term. In descriptive language, one might use "smell processing center" or "primary olfactory structure," but these are not technical equivalents.

Related Phrases

• "Projections from the olfactory bulb": Refers to the neural pathways that carry information away from the olfactory bulb to other brain areas.
• "Olfactory bulb mitral cells": Refers to a principal type of neuron found within the olfactory bulb that helps transmit signals.

Related Idioms

• There are no common idioms that include the term olfactory bulb.

Noun

1. one of two enlargements at the terminus of the olfactory nerve at the base of the brain just above the nasal cavities