Pontine flexure

Pontine flexure
Details
Latin	flexura pontina
Identifiers
Code	TE E5.14.3.1.5.0.9
Anatomical terminology

The pontine flexure is a bend in the axis of the embryological central nervous system (the neuraxis). This flexure marks the junction between the metencephalon and the myelencephalon. The division of the rhombencephalon (the early hindbrain) into the metencephalon and the myelencephalon occurs at the 7th week of development. In the mature brain, the metencephalon forms the pons and cerebellum, whilst the myelencephalon forms the medulla oblongata.^[1]

Other Flexures

The cephalic flexure (also known as the midbrain flexure) bends the neuraxis at the junction of the midbrain and hindbrain. This flexure develops by the 5th week of gestation.

The cervical flexure bends the neuraxis between the brain and the spinal cord. It also develops by the 5th week of gestation.

References

↑ Neuroanatomy: An Illustrated Color Text. 3rd Edition. Crossman & Neary. Published by Elsevier.

Development of the nervous system

Neurogenesis

General	neural development neurulation neurula Notochord Neuroectoderm Neural plate Neural fold Neural groove Neuropoiesis

Neural crest	Cranial neural crest Cardiac neural crest complex Truncal neural crest

Neural tube	Rostral neuropore Neuromere / Rhombomere Cephalic flexure Pontine flexure Alar plate Basal plate Glioblast Neuroblast Germinal matrix

Eye

Ear

Otic placode
- Otic pit
- Otic vesicle

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

Index of the eye

Description	Anatomy orbit neural pathways Physiology Phenomena appearance visual optical illusions proteins Development

Disease	Congenital Corneal dystrophy Neoplasms and cancer Other Symptoms and signs

Treatment	Procedures Drugs infection glaucoma and miosis mydriatics vascular

Index of the ear

Description	Anatomy neural pathways Physiology Development

Disease	Congenital Other motion sickness Symptoms and signs

Treatment	Procedures Drugs

Pontine flexure

Other Flexures

See also

References