mesencephalon 5261

Unit page, primary language: EN, subsidiary: LA, interface: EN, work in progress

mesencephalon

Identification

Official Latin term	mesencephalon
Official term	mesencephalon
Official FMA term	midbrain
Unit identifier	TAH:U5261
Unit type	single
Materiality	material

Navigation

Link to the unit	mesencephalon
Links of entity	generic: mesencephalon
Entity-oriented links	Universal page Definition page
External links	TA98 FMA PubMed
Partonomic links	Level 2: encephalon Short Extended
	Level 3: mesencephalon
Taxonomic links	Level 2: segment of organ Short Extended
	Level 3: segment of neuraxis
	Level 4: principal segment of encephalon
Subsidiary language with Latin
Non Latin primary language

Taxonomic definition

The mesencephalon is a principal segment of encephalon

[segmentum principale encephali

] which lies in median position after the forebrain or prosencephalon [prosencephalon

] and before the hindbrain or rombencephalon [rhombencephalon

Partonomy

TAH:E10200	human body
TAH:U5062	nervous system SOS
TAH:U5068	central nervous system SOS
TAH:U5257	encephalon SOS
TAH:U5265	brain stem SOS
TAH:U5261	mesencephalon SOS

TAH:U8559

external morphology of mesencephalon XOS

TAH:U5582

quadrigeminal plate (pair) UOX

TAH:U5586	superior colliculus (pair) UOU
TAH:U5585	inferior colliculus (pair) UOU

TAH:U5579	trigone of lateral lemniscus (pair) UOX
TAH:U5577	lateral sulcus of mesencephalon (pair) inv
TAH:U5575	cerebral peduncle (pair) UOX
TAH:U5574	oculomotor sulcus (pair) inv
TAH:U5572	interpeduncular fossa imo
TAH:U5573	posterior perforated substance SOX

TAH:U8558

internal morphology of mesencephalon XOS

TAH:U5669

tectum of mesencephalon

SOX

TAH:U9048

grey substance of tectum of mesencephalon SOS

TAH:U8067

layers of superior colliculus (pair)

VOS

TAH:U5674	zonal layer (pair) UOV
TAH:U5675	superficial grey layer (pair) UOV
TAH:U5676	optic layer (pair) UOV
TAH:U5677	intermediate grey layer (pair) UOV
TAH:U5678	intermediate medullary layer (pair) UOV
TAH:U5679	deep grey layer (pair) UOV
TAH:U5680	deep medullary layer (pair) UOV

TAH:U5670

nuclei of inferior colliculus (pair)

VOS

TAH:U5671	central nucleus (pair) UOV
TAH:U5672	external nucleus (pair) UOV
TAH:U5673	pericentral nucleus (pair) UOV

TAH:U8054	layer I of dorsal cortex (pair) UOU
TAH:U8057	layer II of dorsal cortex (pair) UOU
TAH:U8060	layer III of dorsal cortex (pair) UOU
TAH:U8063	layer IV of dorsal cortex (pair) UOU

TAH:U9046

white matter of tectum of mesencephalon

SOS

TAH:U8487	commissural tract of origin in mesencephalon und
TAH:U5681	commissure of inferior colliculus UOV
TAH:U5682	commissure of superior colliculus UOV
TAH:U8096	long tracts of tectum of mesencephalon (pair) VOS

TAH:U8100

ascending tracts of spinal cord (pair)

VOV

TAH:U12531	anterolateral tract UOV
TAH:U5328	spinotectal fibre und

TAH:U8104

ascending tracts of brain stem (pair)

VOV

TAH:U5584	brachium of superior colliculus UOV
TAH:U5760	superior cerebellar peduncle UOV
TAH:U5583	brachium of inferior colliculus UOV
TAH:U5468	lateral lemniscus UOV
TAH:U12527	medial lemniscus UOV

TAH:U8108

descending tracts of tectum of mesencephalon (pair)

VOV

TAH:U8479	tectobulbar tract UOV
TAH:U7503	dorsal tegmental decussation SOS
TAH:U8480	tectospinal tract UOV

TAH:U7479

central structures of mesencephalon

TOX

TAH:U7478

grey matter of central structures of mesencephalon SOT

TAH:U5645	periaqueductal grey matter SOS
TAH:U6302	dopaminergic cells of periaqueductal grey matter (pair) VOS

TAH:U7480

white matter of central structures of mesencephalon SOT

TAH:U8043

long tracts of central structures of mesencephalon VOS

TAH:U8047

ascending tracts of spinal cord (pair)

VOV

TAH:U12531	anterolateral tract UOV
TAH:U5329	spinoperiaqueductal fibre und

TAH:U8051

descending tracts of central structures of mesencephalon VOV

TAH:U8751

descending posterior longitudinal fasciculus

UOV

TAH:U5578

tegmentum of mesencephalon

SOX

TAH:U5625

grey matter of tegmentum of mesencephalon

SOS

TAH:U8564

somatosensory nuclei of tegmentum of mesencephalon (pair)

VOS

TAH:U5494	mesencephalic nucleus of trigeminal nerve (pair) UOV
TAH:U8565	intercollicular nucleus (pair) UOV

TAH:U8566

visual nuclei of tegmentum of mesencephalon (pair)

VOS

TAH:U8567

lateral terminal nucleus (pair)

UOV

TAH:U9055

acoustic nuclei of tegmentum of mesencephalon (pair)

VOS

TAH:U9056	nucleus of brachium of inferior colliculus (pair) UOV
TAH:U5652	sagulum nucleus (pair) UOV
TAH:U5653	subbrachial nucleus (pair) UOV

TAH:U8561

somatomotor nuclei of tegmentum of mesencephalon (pair)

VOS

TAH:U5626	oculomotor nucleus (pair) UOV
TAH:U8562	central caudal nucleus (pair) UOV
TAH:U8563	interoculomotor nucleus (pair) UOV

TAH:U8568

visceromotor nuclei of tegmentum of mesencephalon (pair)

VOS

TAH:U5627

accessory nuclei of oculomotor nerve (pair)

VOV

TAH:U8569	preganglionary part (pair) UOV
TAH:U8570	nonganglionary part (pair) UOV
TAH:U5629	anterior medial nucleus (pair) UOV

TAH:U5684

reticular nuclei of tegmentum of mesencephalon

TOS

TAH:U5651

mesencephalic reticular formation (pair) UOV

TAH:U8572

intracuneiform nucleus (pair)

UOU

TAH:U5658

cuneiform nucleus (pair)

UOV

TAH:U8571

mesencephalic locomotor region (pair)

UOU

TAH:U15263

neuromodulator nuclei of tegmentum of mesencephalon (pair)

VOS

TAH:U5663

raphe nuclei of mesencephalon VOV

TAH:U5664	linear raphe nucleus (pair) UOV
TAH:U5545	dorsal raphe nucleus inv

TAH:U7445

dopaminergic nuclei (pair)

VOV

TAH:U14773	dopaminergic cells of ventral tegmental area (pair) VOV
TAH:U14753	dopaminergic cells of compact part of substantia nigra (pair) VOV
TAH:U14752	retrorubral dopaminergic cells (pair) VOV

TAH:U5597

substantia nigra (pair) UOS

TAH:U5598

compact part of substantia nigra (pair)

UOU

TAH:U8578

dorsal part of substantia nigra (pair)

UOU

TAH:U8579	dorsolateral subnucleus (pair) UOU
TAH:U8580	dorsomedial subnucleus (pair) UOU

TAH:U8581

ventral part of substantia nigra (pair)

UOU

TAH:U8582	ventrolateral subnucleus (pair) UOU
TAH:U8583	ventrointermediate subnucleus (pair) UOU
TAH:U8584	ventromedial subnucleus (pair) UOU

TAH:U5599	lateral part of substantia nigra (pair) UOU
TAH:U8585	medial part of substantia nigra (pair) UOU

TAH:U5600

reticular part of substantia nigra (pair)

UOU

TAH:U12250

ventral tegmental area (pair)

UOS

TAH:U5654

ventral tegmental nuclei of mesencephalon (pair)

VOU

TAH:U8586	rostral linear nucleus (pair) UOV
TAH:U8587	caudal linear nucleus (pair) UOV
TAH:U5655	interfascicular nucleus (pair) UOV
TAH:U5657	paranigral nucleus (pair) UOV
TAH:U5656	pigmented parabrachial nucleus (pair) UOV
TAH:U5685	parapeduncular nucleus (pair) UOV

TAH:U8589

limbic nuclei of tegmentum of mesencephalon (pair)

VOS

TAH:U5646

peripeduncular nucleus (pair)

UOV

TAH:U8590

precerebellar nuclei of tegmentum of mesencephalon (pair)

VOS

TAH:U5647

red nucleus (pair)

UOV

TAH:U5648	magnocellular part (pair) UOU
TAH:U5649	parvocellular part (pair) UOU
TAH:U5650	posteromedial part (pair) UOU

TAH:U5602

white matter of tegmentum of mesencephalon

SOS

TAH:U7464

central roots of tegmentum of mesencephalon (pair)

VOS

TAH:U5464

mesencephalic tract of trigeminal nerve

UOV

TAH:U9066

long tracts of tegmentum of mesencephalon (pair)

VOS

TAH:U9067

ascending tracts of spinal cord (pair)

VOV

TAH:U12531	anterolateral tract UOV
TAH:U5327	spinomesencephalic fibre und
TAH:U7956	spinointercollicular fibre und

TAH:U8594

ascending tracts of brain stem (pair)

VOV

TAH:U8485	nigrostriatal fibre und
TAH:U5468	lateral lemniscus UOV
TAH:U12527	medial lemniscus UOV
TAH:U7460	vestibulomesencephalic tract und
TAH:U8427	medial vestibulomesencephalic tract UOV
TAH:U8428	lateral vestibulomesencephalic tract UOV
TAH:U8429	ventral vestibulomesencephalic tract UOV
TAH:U8430	vestibulothalamic tract UOV
TAH:U8426	trigeminothalamic tract und
TAH:U12170	lateral trigeminothalamic tract UOV
TAH:U5463	posterior trigeminothalamic tract UOV
TAH:U5462	anterior trigeminothalamic tract UOV

TAH:U8603

efferent tracts of cerebellum (pair)

VOV

TAH:U5760

superior cerebellar peduncle UOV

TAH:U12256

afferent tracts of telencephalon (pair)

VOV

TAH:U8118	striatonigral fibre und
TAH:U8122	pallidofugal fibre und

TAH:U8605

descending tracts (pair)

VOV

TAH:U8126	amygdalotegmental fibre und
TAH:U8415	hypothalamospinal tract UOV
TAH:U8481	rubrospinal tract UOV
TAH:U5623	decussation of rubrospinal tract SOS
TAH:U7930	medial longitudinal fasciculus UOV
TAH:U8494	interstitiospinal tract SOS
TAH:U8490	medial tegmental tract UOV
TAH:U8491	pretectoolivary tract SOS
TAH:U8492	prerubroolivary tract SOS
TAH:U5476	central tegmental tract UOV
TAH:U5322	rubroolivary tract und

TAH:U8035

white matter of cerebral peduncle (pair)

UOX

TAH:U8526	pyramidal tract UOV
TAH:U5624	corticomesencephalic fibre und
TAH:U9196	corticorubral tract SOS
TAH:U12543	corticopontine tract und
TAH:U6243	frontopontine tract UOV
TAH:U8533	occipitoparietotemporopontine tract UOV
TAH:U12525	corticonuclear tract SOS
TAH:U8528	corticoreticular tract SOS

Total

165 children

Taxonomy

FMA:62955	anatomical entity
FMA:61775	physical entity
FMA:67165	material entity
FMA:305751	anatomical structure
FMA:67135	postnatal anatomical structure
FMA:82472	cardinal part of organ
FMA:67619	region of organ
FMA:86140	segment of organ
FMA:256237	segment of neuraxis
FMA:55676	segment of central nervous system
FMA:61815	principal segment of encephalon
FMA:61993	mesencephalon

Date: 25.06.2025

FEDERATIVE INTERNATIONAL PROGRAMME FOR ANATOMICAL TERMINOLOGY Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)