What impeded the understanding of the internal human body structure in ancient and medieval times?

In ancient and medieval times, the understanding of internal human body structure was largely impeded by religious beliefs that discouraged dissection and the study of cadavers, which were often viewed as disrespectful to the dead. Additionally, the lack of advanced scientific methodologies and technology limited the ability to observe and study human anatomy accurately. Reliance on ancient texts, such as those by Galen, often led to the perpetuation of inaccuracies and misconceptions about the body's functions and structures. Finally, cultural taboos around the human body further hindered open inquiry and exploration.