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Midbrain
Forward-most portion of the brainstem / From Wikipedia, the free encyclopedia
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This article is about the midbrain in vertebrates. For the midbrain in insects, see olfactory deutocerebrum.
The midbrain or mesencephalon is the rostral-most portion of the brainstem[2] connecting the diencephalon and cerebrum with the pons.[3] It consists of the cerebral peduncles, tegmentum, and tectum.
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Midbrain | |
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![]() Figure shows the midbrain (A) and surrounding regions; sagittal view of one cerebellar hemisphere. B: Pons. C: Medulla. D: Spinal cord. E: Fourth ventricle. F: Arbor vitae. G: Nodule. H: Tonsil. I: Posterior lobe. J: Anterior lobe. K: Inferior colliculus. L: Superior colliculus. | |
![]() Inferior view in which the midbrain is encircled blue. | |
Details | |
Pronunciation | UK: /ˌmɛsɛnˈsɛfəlɒn, -kɛf-/, US: /ˌmɛzənˈsɛfələn/;[1] |
Part of | Brainstem |
Identifiers | |
Latin | mesencephalon |
MeSH | D008636 |
NeuroNames | 462 |
NeuroLex ID | birnlex_1667 |
TA98 | A14.1.03.005 |
TA2 | 5874 |
FMA | 61993 |
Anatomical terms of neuroanatomy |
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It is functionally associated with vision, hearing, motor control, sleep and wakefulness, arousal (alertness), and temperature regulation.[2]
The name comes from the Greek mesos, "middle", and enkephalos, "brain".[4]