Final answer:
Real-time images showing the internal activities and processes of the human body are created using techniques like functional magnetic resonance imaging (fMRI) or positron emission tomography (PET).
Step-by-step explanation:
For the study of the dynamic action of the human body, real-time images are created, showing internal activities and processes known as functional magnetic resonance imaging (fMRI) or positron emission tomography (PET). These imaging techniques are an integral part of medical diagnostics and are used to observe metabolic and physiological functions within the tissues of the body. The technique known as PET, in particular, is highly beneficial as it can trace radiopharmaceuticals that reveal active functions like nutrient metabolism and blood flow, unlike CT and MRI scans which only show static images