corticospinal tract
E764619
central nervous system pathway
corticospinal tract subdivision
descending motor pathway
white matter tract
The corticospinal tract is a major descending motor pathway that carries voluntary movement commands from the cerebral cortex to motor neurons in the spinal cord.
All labels observed (3)
| Label | Occurrences |
|---|---|
| corticospinal tract canonical | 4 |
| pyramidal tract | 2 |
| lateral corticospinal tract | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8902112 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: corticospinal tract Context triple: [primary motor cortex, projectsTo, corticospinal tract]
-
A.
arcuate fasciculus
The arcuate fasciculus is a major white matter tract in the brain that links language comprehension and production regions, playing a key role in speech and language processing.
-
B.
primary motor cortex
The primary motor cortex is a brain region in the frontal lobe responsible for the voluntary control and precise execution of skeletal muscle movements.
-
C.
supplementary motor area
The supplementary motor area is a region of the medial frontal cortex involved in planning, coordinating, and initiating complex voluntary movements, especially those requiring sequences or bilateral coordination.
-
D.
CNS
CNS is the IATA airport code for Cairns Airport, the main international and domestic gateway to the Cairns region in Queensland, Australia.
-
E.
premotor cortex
The premotor cortex is a region of the frontal lobe involved in planning and preparing voluntary movements, integrating sensory information to guide motor actions.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: corticospinal tract Target entity description: The corticospinal tract is a major descending motor pathway that carries voluntary movement commands from the cerebral cortex to motor neurons in the spinal cord.
-
A.
arcuate fasciculus
The arcuate fasciculus is a major white matter tract in the brain that links language comprehension and production regions, playing a key role in speech and language processing.
-
B.
primary motor cortex
The primary motor cortex is a brain region in the frontal lobe responsible for the voluntary control and precise execution of skeletal muscle movements.
-
C.
supplementary motor area
The supplementary motor area is a region of the medial frontal cortex involved in planning, coordinating, and initiating complex voluntary movements, especially those requiring sequences or bilateral coordination.
-
D.
CNS
CNS is the IATA airport code for Cairns Airport, the main international and domestic gateway to the Cairns region in Queensland, Australia.
-
E.
premotor cortex
The premotor cortex is a region of the frontal lobe involved in planning and preparing voluntary movements, integrating sensory information to guide motor actions.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
central nervous system pathway
ⓘ
corticospinal tract subdivision ⓘ descending motor pathway ⓘ white matter tract ⓘ |
| bloodSupplyRelatedTo |
anterior cerebral artery
ⓘ
anterior spinal artery ⓘ middle cerebral artery ⓘ vertebral arteries ⓘ |
| carries | voluntary motor commands ⓘ |
| cellBodiesLocatedIn |
Betz cells of primary motor cortex
ⓘ
layer V of cerebral cortex ⓘ |
| clinicalSignOfLesion |
Babinski sign
ⓘ
linked to:
Bekhterev’s reflex
hyperreflexia ⓘ spastic paralysis ⓘ weakness of voluntary movement ⓘ |
| composedOf | upper motor neuron axons ⓘ |
| decussatesAt |
pyramidal decussation in caudal medulla
ⓘ
pyramidal decussation in caudal medulla ⓘ segmental level in spinal cord ⓘ |
| function |
control of voluntary movement
ⓘ
fine motor control of distal limbs ⓘ skilled movements of hands and fingers ⓘ |
| hasPart |
anterior corticospinal tract
ⓘ
lateral corticospinal tract ⓘ
linked to:
corticospinal tract
|
| hasSynonym |
pyramidal tract
ⓘ
linked to:
corticospinal tract
|
| locatedIn |
anterior funiculus of spinal cord
ⓘ
cerebral cortex ⓘ lateral funiculus of spinal cord ⓘ |
| mostlyCrossed | true ⓘ |
| neurotransmitter | glutamate ⓘ |
| originatesIn |
premotor cortex
ⓘ
primary motor cortex ⓘ somatosensory cortex ⓘ
linked to:
primary somatosensory cortex
supplementary motor area ⓘ |
| partOf | pyramidal system ⓘ |
| passesThrough |
basis pontis
ⓘ
cerebral peduncle of midbrain ⓘ corona radiata ⓘ medullary pyramids ⓘ
linked to:
medulla oblongata
posterior limb of internal capsule ⓘ |
| percentageFibersCrossed | approximately 80–90 percent ⓘ |
| percentageFibersUncrossed | approximately 10–20 percent ⓘ |
| projectsTo | spinal cord ⓘ |
| species | human ⓘ |
| targets |
alpha motor neurons
ⓘ
spinal interneurons ⓘ |
| terminatesIn |
spinal cord gray matter
ⓘ
ventral horn of spinal cord ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: corticospinal tract Description of subject: The corticospinal tract is a major descending motor pathway that carries voluntary movement commands from the cerebral cortex to motor neurons in the spinal cord.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: corticospinal tract
linked to: corticospinal tract
linked to: corticospinal tract