loading...| Preferred Name |
primary motor cortex |
| Synonyms |
prefrontal gyrus somatomotor cortex gyrus precentralis somatic motor areas Rolando's area motor cortex somatomotor areas excitable area primary motor cortex primary motor area motor area |
| 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. The part of the cerebral cortex that receives projections from the motor thalamus and which projects to motor neurons in the brainstem and spinal cord. The motor cortex corresponds to Brodmann's area 4 (MM). The primary motor cortex, or M1, is located on the precentral gyrus and on the anterior paracentral lobule on the medial surface of the brain. Of the three motor cortex areas, stimulation of the primary motor cortex requires the least amount of electrical current to elicit a movement. http://neuroscience.uth.tmc.edu/s3/chapter03.html |
| 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 |
| database_cross_reference |
EMAPA:35704 BAMS:MO DHBA:10162 BAMS:M1 BAMS:MOp MESH:A08.186.211.730.885.213.270.548 SNOMEDCT:11931008 UMLS:C0026607 http://upload.wikimedia.org/wikipedia/commons/e/eb/Ba4.png Wikipedia:Primary_motor_cortex MA:0000907 FMA:224854 MSH:D009044 BTO:0004348 BM:Tel-Cx-M1 MBA:985 EFO:0002472 NCIT:C97339 NCIt:C97339 http://upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Ba4.png/200px-Ba4.png http://linkedlifedata.com/resource/umls/id/C0026607 http://www.snomedbrowser.com/Codes/Details/11931008 http://uri.neuinfo.org/nif/nifstd/nlx_143555 http://braininfo.rprc.washington.edu/centraldirectory.aspx?ID=1910 |
| 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. The part of the cerebral cortex that receives projections from the motor thalamus and which projects to motor neurons in the brainstem and spinal cord. The motor cortex corresponds to Brodmann's area 4 (MM). The primary motor cortex, or M1, is located on the precentral gyrus and on the anterior paracentral lobule on the medial surface of the brain. Of the three motor cortex areas, stimulation of the primary motor cortex requires the least amount of electrical current to elicit a movement. http://neuroscience.uth.tmc.edu/s3/chapter03.html |
| depicted_by | |
| editor note |
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 parietal lobe |
| external_definition |
the area of the frontal lobe that is involved with integration of voluntary movements and with speech.[MP] The part of the cerebral cortex that receives projections from the motor thalamus and which projects to motor neurons in the brainstem and spinal cord. The motor cortex corresponds to Brodmann's area 4 (MM). The primary motor cortex, or M1, is located on the precentral gyrus and on the anterior paracentral lobule on the medial surface of the brain. Of the three motor cortex areas, stimulation of the primary motor cortex requires the least amount of electrical current to elicit a movement. http://neuroscience.uth.tmc.edu/s3/chapter03.html |
| has_exact_synonym |
prefrontal gyrus somatomotor cortex gyrus precentralis motor cortex primary motor cortex |
| has_obo_namespace |
uberon |
| has_related_synonym |
prefrontal gyrus gyrus precentralis somatic motor areas Rolando's area somatomotor areas excitable area primary motor area motor area |
| id |
UBERON:0001384 |
| in_subset |
http://purl.obolibrary.org/obo/uberon#efo_slim http://purl.obolibrary.org/obo/uberon/core#uberon_slim http://purl.obolibrary.org/obo/uberon/core#pheno_slim |
| label |
primary motor cortex |
| notation |
UBERON:0001384 |
| part_of | |
| prefLabel |
primary motor cortex |
| term editor |
James Malone Ele Holloway |
| treeView | |
| subClassOf |