Ventral Root of Spinal Nerve. The ventral root (motor root) of each spinal nerve consists of axons from motor neurons whose cell bodies are found within the gray matter of the spinal cord. A ventral root and a dorsal root unite to form a spinal nerve, which passes outward from the vertebral canal through an intravertebral foramen (bone opening). A posterior branch (posterior ramus) of each spinal nerve turns toward the posterior to innervate muscles and skin of the back.
Studies to date suggest that the planktonic-biofilm transition is a complex and highly regulated process. The results reviewed in this article indicate that the formation of biofilms serves as a new model system for the study of microbial development.tudies to date suggest that the planktonic-biofilm transition is a complex and highly regulated process. The results reviewed in this article indicate that the formation of biofilms serves as a new model system for the study of microbial development.
Post-transcriptional Controls 289 POST-TRANSCRIPTIONAL CONTROLS We have seen that transcription regulators control gene expression by switching on or off transcription initiation. The vast majority of genes in all organisms are regulated in this way.n Overview of Gene Expression 271made in reticulocytes, the cells that develop into red blood cells, but it cannot be detected in any other cell type.Many proteins in a cell are produced in such small numbers that they cannot be detected by the technique of gel electrophoresis.