tegmentum
Sign in to saveThe tegmentum (from Latin for "covering") is a general area within the brainstem. The tegmentum is the ventral part of the midbrain and the tectum is the dorsal part of the midbrain. It is located between the ventricular system and distinctive basal or ventral structures at each level. It forms the floor of the midbrain (mesencephalon) whereas the tectum forms the ceiling. It is a multisynaptic network of neurons that is involved in many subconscious homeostatic and reflexive pathways. It is a motor center that relays inhibitory signals to the thalamus and basal nuclei preventing unwanted body
Key facts
- Brain.Name
- Tegmentum
- Brain.Latin
- tegmentum
- Brain.Image
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- Brain.Caption
- Transverse section of mid-brain at level of superior colliculi, with anterior side pointing downward. ("Tegmentum" visible center right.)
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- Brain.Caption2
- Section through superior colliculus showing path of oculomotor nerve. (Tegmentum not labeled, but surrounding structures more clearly defined.)
via Wikipedia infobox
Wikidata facts
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- Gray712.png
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- native label
- Tegmentum
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Article
7 sectionsContents
- Development
- Divisions
- Midbrain tegmentum
- Pontine tegmentum
- Other
- See also
- References
The tegmentum (from Latin for "covering") is a general area within the brainstem. The tegmentum is the ventral part of the midbrain and the tectum is the dorsal part of the midbrain. It is located between the ventricular system and distinctive basal or ventral structures at each level. It forms the floor of the midbrain (mesencephalon) whereas the tectum forms the ceiling. It is a multisynaptic network of neurons that is involved in many subconscious homeostatic and reflexive pathways. It is a motor center that relays inhibitory signals to the thalamus and basal nuclei preventing unwanted body movement.
The tegmentum area includes various different structures, such as the rostral end of the reticular formation, several nuclei controlling eye movements, the periaqueductal gray matter, the red nucleus, the substantia nigra, and the ventral tegmental area.