loading...| Preferred Name |
primary motor cortex |
| Synonyms |
prefrontal gyrus somatomotor cortex gyrus precentralis motor cortex primary motor cortex |
| Definitions |
TODO: in MA this is asserted to be part_of BOTH frontal and parietal cortex. in ABA these are disjoint. FMA makes no commitment beyond cerebral cortex. Wikipedia says frontal lobe. Check if species difference or difference in definition. Removed relationship: part_of UBERON:0001872 a brain region that in humans is located in the posterior portion of the frontal lobe. It works in association with pre-motor areas to plan and execute movements. M1 contains large neurons known as Betz cells which send long axons down the spinal cord to synapse onto alpha motor neurons which connect to the muscles. Pre-motor areas are involved in planning actions (in concert with the basal ganglia) and refining movements based upon sensory input (this requires the cerebellum). The human primary motor cortex is located in the dorsal part of the precentral gyrus and the anterior bank of the central sulcus. The precentral gyrus is in front of the postcentral gyrus from which it is separated by the central sulcus. Its anterior border is the precentral sulcus, while inferiorly it borders to the lateral fissure (Sylvian fissure). Medially, it is contiguous with the paracentral lobule. |
| ID |
http://purl.obolibrary.org/obo/UBERON_0001384 |
| comment |
TODO: in MA this is asserted to be part_of BOTH frontal and parietal cortex. in ABA these are disjoint. FMA makes no commitment beyond cerebral cortex. Wikipedia says frontal lobe. Check if species difference or difference in definition. Removed relationship: part_of UBERON:0001872 |
| alternative_term |
prefrontal gyrus somatomotor cortex gyrus precentralis motor cortex primary motor cortex |
| BM_definition_citation |
BM:Tel-Cx-M1 |
| BTO_definition_citation |
BTO:0004348 |
| database_cross_reference |
http://upload.wikimedia.org/wikipedia/commons/e/eb/Ba4.png http://upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Ba4.png/200px-Ba4.png |
| definition |
a brain region that in humans is located in the posterior portion of the frontal lobe. It works in association with pre-motor areas to plan and execute movements. M1 contains large neurons known as Betz cells which send long axons down the spinal cord to synapse onto alpha motor neurons which connect to the muscles. Pre-motor areas are involved in planning actions (in concert with the basal ganglia) and refining movements based upon sensory input (this requires the cerebellum). The human primary motor cortex is located in the dorsal part of the precentral gyrus and the anterior bank of the central sulcus. The precentral gyrus is in front of the postcentral gyrus from which it is separated by the central sulcus. Its anterior border is the precentral sulcus, while inferiorly it borders to the lateral fissure (Sylvian fissure). Medially, it is contiguous with the paracentral lobule. |
| external_definition |
the area of the frontal lobe that is involved with integration of voluntary movements and with speech.[MP] |
| FMA_definition_citation |
FMA:224854 |
| has_obo_namespace |
uberon |
| id |
UBERON:0001384 |
| in_subset | |
| label |
primary motor cortex |
| MA_definition_citation |
MA:0000907 |
| MSH_definition_citation |
MESH:A08.186.211.730.885.213.270.548 MSH:D009044 |
| NCI_Thesaurus_definition_citation |
NCIt:C97339 |
| notation |
UBERON:0001384 |
| prefLabel |
primary motor cortex |
| SNOMEDCT_definition_citation |
SNOMEDCT:11931008 |
| term editor |
James Malone Ele Holloway |
| UMLS_definition_citation |
UMLS:C0026607 |
| Wikipedia_definition_citation |
Wikipedia:Primary_motor_cortex |
| subClassOf |