These cells are clustered in columnar nuclei called pools and their lower type is split into two types based on whether they interact with extrafusal or intrafusal fibers.
The centromeric version of a gene that codes for a protein whose absence results in the death of these cells has a C to T mutation at exon 7 as compared to the gene's telomeric version. The alpha type of these cells form a negative feedback loop with Renshaw cells. The telomeric version of that gene codes for the SMN protein and is mutated in SMA. Lesions of the upper ones of these cells can be diagnosed by the presence of a clasp-knife response or the Babinski sign. These cells are organized in the anterior horn of the spinal cord according to the flexor-extensor and proximal-distal rules. These cells are clustered in columnar nuclei called pools and their lower type is split into two types based on whether they interact with extrafusal or intrafusal fibers. The most common disease that affects these cells is ALS. For 10 points, identify these neurons that innervate muscles.
The centromeric version of a gene that codes for a protein whose absence results in the death of these cells has a C to T mutation at exon 7 as compared to the gene's telomeric version.
motor neurons [or motoneuron; or specific types of motor neurons, such as "upper", "lower", "alpha", "gamma"; prompt on neurons, spinal neurons, extrapyramidal neurons, or cranial neurons]