corticospinal tract

corticospinal tract (cst)

The term corticospinal tract refers to a fiber pathway from the cerebral cortex to the spinal cord. Its fibers originate from pyramidal neurons of the precentral gyrus, and on their way to the spinal cord, pass through parts of the cerebral white matter (including the posterior limb of the internal capsule), the cerebral crus, the longitudinal pontine fibers, the pyramid of the medulla (where they are known as the pyramidal tract) and the pyramidal decussation. In the ducussation, some fibers cross to the other side of the brainstem to form the lateral corticospinal tract. Those fibers that do not cross split to form the anterolateral corticospinal tract and the anterior corticospinal tract ( Carpenter-1983 ). Some parts of the tract are not readily distinguished in myelin stained cross-sections.

Also known as: corticospinal tract, Tractus corticospinalis, Tractus cortico-spinalis, Fasciculus cerebro-spinalis, Fibrae corticospinales, corticospinal fibers

NeuroNames ID: 1320

All Names & Sources

1 of 18

Showing 18 synonym(s) - Use arrows to navigate

Showing 18 synonym(s)

Name:

fibre corticospinali

Language:

Italian

Organism:

human

Source:

Carpenter-1995

Citation:

EdiSes, s.r.l.- Napoli, 1995

Source Title:

Fondamenti di Neuroanatomia

Name:

fibras corticoespinales

Language:

Spanish

Organism:

human

Source:

Carpenter-1994

Citation:

edicion 4, Williams & Wilkins, Baltimore; traducción de Editorial Medica Panamericana, Buenos Aires, efectuada por el Dr. Alejandro Kaufman

Source Title:

Neuroanatomía Fundamentos

Name:

корково-спинномозговые волокна

Language:

Russian

Organism:

human

Source:

Baev-2000

Citation:

Moskva: Meditsina, 2000.

Source Title:

Magnitno-Resonansnaia Tomografiia Golovnogo Mozga: Normal'naia Anatomiia

Name:

fibre corticospinali

Language:

Italian

Organism:

human

Source:

Carpenter-1995

Citation:

EdiSes, s.r.l.- Napoli, 1995

Source Title:

Fondamenti di Neuroanatomia

Name:

traktus kortikospinal

Language:

Indonesian

Organism:

human

Source:

Noback-1982

Citation:

Jakarta: Penerbit Buku Kedokteran EGC, 1982

Source Title:

Anatomi Susunan Saraf Manusia, Prinsip-Prinsip Dasar Neurobiologi

Name:

корково-спинномозговой путь

Language:

Russian

Organism:

human

Source:

Sapin-1998

Citation:

Vol. 3, Moscow: Elista APP "Dzhangar", 1998

Source Title:

Anatomiia Cheloveka

Name:

Pyramidenbahn

Language:

German

Organism:

human

Source:

Schultze-1993

Citation:

Georg Theme Verlag, Stuttgart, 1993

Source Title:

Anatomisches Wörterbuch

Name:

tratto corticospinale

Language:

Italian

Organism:

human

Source:

Carpenter-1995

Citation:

EdiSes, s.r.l.- Napoli, 1995

Source Title:

Fondamenti di Neuroanatomia

Name:

corticospinal tract

Language:

English

Organism:

human

Source:

Carpenter-1983

Citation:

Baltimore: Williams and Wilkins Co., 1983

Source Title:

Human Neuroanatomy

Name:

Tractus corticospinalis

Language:

Latin

Organism:

human

Source:

Nomina-1983

Citation:

Fifth Edition, Williams and Wilkins Co., Baltimore, 1983

Source Title:

Nomina Anatomica

Name:

Tractus cortico-spinalis

Language:

Latin

Organism:

human

Source:

Riley-1943

Citation:

Baltimore: Williams and Wilkins Co., 1943

Source Title:

An Atlas Of The Basal Ganglia, Brain Stem And Spinal Cord (Based On Myelin-Stained Material)

Name:

Fasciculus cerebro-spinalis

Language:

Latin

Organism:

human

Source:

Riley-1943

Citation:

Baltimore: Williams and Wilkins Co., 1943

Source Title:

An Atlas Of The Basal Ganglia, Brain Stem And Spinal Cord (Based On Myelin-Stained Material)

Name:

Fibrae corticospinales

Language:

Latin

Organism:

human

Source:

Nomina-1983

Citation:

Fifth Edition, Williams and Wilkins Co., Baltimore, 1983

Source Title:

Nomina Anatomica

Name:

corticospinal fibers

Language:

English

Organism:

human

Source:

Carpenter-1983

Citation:

Baltimore: Williams and Wilkins Co., 1983

Source Title:

Human Neuroanatomy

Name:

haz corticoespínal

Language:

Spanish

Organism:

human

Source:

Carpenter-1994

Citation:

edicion 4, Williams & Wilkins, Baltimore; traducción de Editorial Medica Panamericana, Buenos Aires, efectuada por el Dr. Alejandro Kaufman

Source Title:

Neuroanatomía Fundamentos

Name:

traktus piramidal

Language:

Indonesian

Organism:

human

Source:

Noback-1982

Citation:

Jakarta: Penerbit Buku Kedokteran EGC, 1982

Source Title:

Anatomi Susunan Saraf Manusia, Prinsip-Prinsip Dasar Neurobiologi

Name:

traktus serebrospinal

Language:

Indonesian

Organism:

human

Source:

Noback-1982

Citation:

Jakarta: Penerbit Buku Kedokteran EGC, 1982

Source Title:

Anatomi Susunan Saraf Manusia, Prinsip-Prinsip Dasar Neurobiologi

Name:

cst

Language:

acronym

Organism:

Unspecified

Source:

NeuroNames

Citation:

University of Washington, Seattle, WA

Source Title:

NeuroNames

Illustrations

Showing 1 illustration(s)

myelin stain & diagram of
all aspects in
human

Species With The Structure

Equivalent By	Human	Macaque	Rat	Mouse
Internal Structure	Has The Structure	Relevant Data Not Located	Relevant Data Not Located	Relevant Data Not Located

1 of 6

Showing 6 record(s) - Use arrows to navigate

Showing 6 record(s)

Basis:

Internal Structure

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

corticospinal fibers

Source:

Carpenter-1983

Basis:

Internal Structure

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

corticospinal tract

Source:

Carpenter-1983

Basis:

Internal Structure

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

Fasciculus cerebro-spinalis

Source:

Riley-1943

Basis:

Internal Structure

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

Fibrae corticospinales

Source:

Nomina-1983

Basis:

Internal Structure

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

Tractus corticospinalis

Source:

Nomina-1983

Basis:

Internal Structure

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

Tractus cortico-spinalis

Source:

Riley-1943

Models Where It Appears

Functional CNS Model - Rat

The Functional CNS Model - Rat (FMrat) ( Swanson-2004) is one of three hierarchical models representing the internal organization of the central nervous system (CNS). The others are the Structural CNS Model - Human (SThmn) and the Functional CNS Model - Human (FMhmn). The FMrat model represents the basic organization of the mouse ( Hof-2000 AMBA-2024 ) and, presumably, other rodents. Functional CNS models differ from structural models in that structures are defined and named by connectivity rather than by proximity to other structures at the same level. Functional models are more useful for representing longitudinal components of are grouped based on information drawn from multiple neuroscientific disciplines. such as connections, neurochemical characteristics, and role in physiogical and behavioral processes. While the Functional Model was developed primarily for an atlas of the rat brain ( Swanson-2004 ), the hierarchical organization of structures is for the most part applicable to the human, macaque, mouse and other mammalian brains as well. Structures at lower levels of the Functional CNS hierarchy are largely the same as in the Classical and Developmental Models, i.e., they were originally identified by stains for gray matter (Nissl substance) and white matter (myelin). At the next higher level they are grouped into basic connectional and functional systems of the CNS, such as the subcortical sensory systems, the brainstem motor system and the behavioral state system. At the highest levels CNS structures are grouped on the basis of dissection and embryologic precursors into cerebrum ( cerebral cortex and cerebral nuclei ), cerebellum, and cerebrospinal trunk.

gray matter (central nervous system gray matter)

white matter (basic fiber systems)

craniospinal nerves

cerebellar tracts (cerebellum related fiber tracts)

lateral forebrain bundle system

corpus callosum

corticospinal tract

extrapyramidal fiber systems

medial forebrain bundle

cerebral ventricles (ventricular system)