Part 5/9:
Cell differentiation during organogenesis is influenced by extracellular signals, including growth factors. These signaling pathways facilitate cell proliferation, movement, and specialization, ensuring organs develop at precise locations within the organism.
Cellular Differentiation and Signaling Pathways
Differentiation is the process where less specialized cells acquire specific functions and structures. It is regulated by genetic expression controlled by external signals such as:
Growth factors: Substances stimulating cell proliferation.
Junctional signaling: Cell-to-cell communication via contact-dependent mechanisms.
Paracrine signaling: Cells releasing signals to neighboring cells.