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olfactory bulb
The expanded rostral extremity of the olfactory tract, lying on the cribriform plate of the ethmoid bone.
Afferents:
- it contains synapses of olfactory nerve (CN I) afferents
Efferents:
- olfactory tubercle via the olfactory tract & intermediate olfactory striae
Function:
- component of limbic system
- associated with odor identification
- mediates link between central olfactory brain structures*
* olfactory cortex, hypothalamus, hippocampus, parahippocampal cortex, insular cortex, medial orbitofrontal cortex, amygdala, dorsomedial thalamic nucleus
Pathology:
- olfactory bulb volume may serve as a preclinical marker for adults at risk for neurodegenerative diseases* later in life [2]
* also see olfaction & Alzheimer's disease
Related
cribriform plate of ethmoid bone, (cribrum, sieve bone, sieve plate)
olfactory nerve (CN I)
olfactory tract
olfactory tubercle
General
brain structure
References
- Stedman's Medical Dictionary 27th ed, Williams &
Wilkins, Baltimore, 1999
- Lu R, Aziz NA, Reuter M et al
Evaluation of the Neuroanatomical Basis of Olfactory Dysfunction
in the General Population.
JAMA Otolaryngol Head Neck Surg. Published online August 26, 2021
PMID: 34436517
https://jamanetwork.com/journals/jamaotolaryngology/article-abstract/2783603
Component-of
limbic system
Images
images related to olfactory bulb