Hypoglossal trigone

Hypoglossal trigone
Rhomboid fossa. (Trigonum hypoglossi labeled at center left.)
Human caudal brainstem posterior view description (Trigonum nervi hypoglossi is #6)
Details
Latin	trigonum nervi hypoglossi
Identifiers
Gray's	p.779
NeuroNames	hier-632
Dorlands /Elsevier	t_19/12823554
TA	A14.1.05.708
FMA	78489
Anatomical terms of neuroanatomy

In the upper part of the medulla oblongata, the hypoglossal nucleus approaches the rhomboid fossa, where it lies close to the middle line, under an eminence named the hypoglossal trigone.

Additional images

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

Anatomy of the medulla

afferent:	Solitary nucleus tract Dorsal respiratory group Gustatory nucleus Vestibular nuclei Lateral Medial Inferior

efferent:	Hypoglossal nucleus Nucleus ambiguus Dorsal nucleus of vagus nerve Inferior salivatory nucleus

Dorsal

Ventral

Dorsal	Sensory Sensory decussation Medial lemniscus Juxtarestiform body Ascending dorsal longitudinal fasciculus Medial longitudinal fasciculus Motor Descending dorsal longitudinal fasciculus Medial longitudinal fasciculus

Ventral	Descending tracts Olivocerebellar tract Rubro-olivary tract

Surface

Front	Pyramid decussation Anterior median fissure Anterolateral sulcus Olive Inferior olivary nucleus

Back	Posterior median sulcus Posterolateral sulcus Area postrema Vagal trigone Hypoglossal trigone Medial eminence Inferior cerebellar peduncle

Index of the central nervous system

Description	Anatomy meninges cortex association fibers commissural fibers lateral ventricles basal ganglia diencephalon mesencephalon pons cerebellum medulla spinal cord tracts Physiology neutrotransmission enzymes intermediates Development

Disease	Cerebral palsy Meningitis Demyelinating diseases Seizures and epilepsy Headache Stroke Sleep Congenital Injury Neoplasms and cancer Other paralytic syndromes ALS Symptoms and signs head and neck eponymous lesions Tests CSF

Treatment	Procedures Drugs general anesthetics analgesics addiction epilepsy cholinergics migraine Parkinson's vertigo other

rostral:	Superior medullary velum Frenulum

caudal:	Inferior medullary velum Taenia

Floor

rostral (pons):	Facial colliculus Locus coeruleus

caudal (medulla}:	Vagal trigone Hypoglossal trigone Area postrema Obex

Medial eminence Sulcus limitans Fastigium

Apertures

Other

Index of the central nervous system

Description	Anatomy meninges cortex association fibers commissural fibers lateral ventricles basal ganglia diencephalon mesencephalon pons cerebellum medulla spinal cord tracts Physiology neutrotransmission enzymes intermediates Development

Disease	Cerebral palsy Meningitis Demyelinating diseases Seizures and epilepsy Headache Stroke Sleep Congenital Injury Neoplasms and cancer Other paralytic syndromes ALS Symptoms and signs head and neck eponymous lesions Tests CSF

Treatment	Procedures Drugs general anesthetics analgesics addiction epilepsy cholinergics migraine Parkinson's vertigo other