Brachium of inferior colliculus at a glance
- What it is
- The brachium of the inferior colliculus is a fibre bundle carrying auditory information from the inferior colliculus to the medial geniculate body.
- Location
- It runs from the inferior colliculus on the dorsal midbrain, laterally and upward to the medial geniculate body of the thalamus.
- Function
- It forms part of the ascending auditory pathway, relaying auditory signals to the thalamus before they reach the auditory cortex.
- Body system
- Nervous · paired (left and right)
- FMA ID
- FMA73464 (Foundational Model of Anatomy)
Key facts
- Auditory pathway: cochlear nuclei, superior olive, lateral lemniscus, inferior colliculus, medial geniculate body, auditory cortex.
- It forms a visible ridge on the side of the midbrain running toward the medial geniculate body.
Structures next to the brachium of inferior colliculus
The nearest named structures in the 3D model, measured from the centre of each part:
- Superior colliculus · nervous
- Inferior colliculus · nervous
- Medial geniculate body · nervous
- Cerebral aqueduct · nervous
- Postcommunicating part of posterior cerebral artery · cardiovascular
- Posterior commissure · nervous
- Midbrain · nervous
- Pineal body · endocrine
- Parahippocampal gyrus · nervous
- Hair of head · skin
References
- Foundational Model of Anatomy: Brachium of inferior colliculus (FMA73464). EMBL-EBI Ontology Lookup Service.
- OpenStax. Anatomy and Physiology 2e, §12.1 Basic Structure and Function of the Nervous System. Rice University, 2022.
- Mitsuhashi N. et al. (2009). BodyParts3D: 3D structure database for anatomical concepts. Nucleic Acids Research 37, D782–D785. Data © The Database Center for Life Science, CC BY 4.0.
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