What is a common effect associated with organogenesis that occurs during the first 60 days?

During the first 60 days of embryonic development, a period known as organogenesis, the most significant event is the development of major organs. This phase involves the critical formation of essential structures such as the heart, brain, lungs, kidneys, and liver. Each of these organs has a specific timeline for development, and their proper formation is crucial for the viability of the embryo and future growth.

During organogenesis, different embryonic layers differentiate into specific organs. For instance, the ectoderm gives rise to the nervous system through structures like the neural tube, while the mesoderm forms the cardiovascular system and other essential organs. This intense period of organ development sets the foundation for all subsequent bodily functions and structures.

While minor organs and skin layers play a role in development, they do not have the same level of significance during this early stage as the major organs. Similarly, the formation of neural pathways, while crucial for nervous system functionality, is part of a broader developmental process that happens as these major organs begin to function and interact. Thus, the focus on major organ development is a defining characteristic of this crucial period in embryonic growth.