What is the revelence in the order of development of the foetal nervous system before the cardiovascular system?
The relevance of the order of development of the fetal nervous system before the cardiovascular system is primarily due to the critical nature of these systems for the overall development and survival of the embryo.
In the early stages of development, the formation of the fetal nervous system occurs before the cardiovascular system. This sequence is crucial because the nervous system plays a vital role in orchestrating and regulating various developmental processes, including the formation and functioning of the cardiovascular system.
The nervous system begins to develop early on in embryogenesis from a specialized region called the neural plate, which eventually forms the neural tube. The neural tube then differentiates into the brain and spinal cord, giving rise to the central nervous system. Simultaneously, neural crest cells migrate from the neural tube to different regions of the embryo and differentiate into various components of the peripheral nervous system, including sympathetic and parasympathetic ganglia and sensory neurons.
The proper development of the nervous system sets the stage for the subsequent formation of the cardiovascular system. As the neural tube extends and differentiates, it influences the formation of the heart tube, which eventually develops into the four-chambered heart. The neural crest cells that migrate from the neural tube also contribute to the development of cardiac structures, such as the outflow tract and major blood vessels.
Furthermore, the early establishment of the nervous system helps in regulating other crucial processes for cardiovascular development, such as angiogenesis (formation of blood vessels) and vasculogenesis (formation of new blood vessels). Neural signals play a role in guiding blood vessel development and ensuring proper connectivity between the heart and different parts of the body.
In summary, the relevance of the order of development of the fetal nervous system before the cardiovascular system lies in the fact that the nervous system acts as a blueprint and regulator for the subsequent formation and functioning of the heart and blood vessels. The proper development of these systems in the correct sequence is vital for the overall development and survival of the embryo.