The brain commands the nervous system, while the gut is the central part of the digestive system. These two complex body systems work together to get the nutrients out of food and maintain both physical and emotional well-being. Explore the science behind the nervous and digestive systems through an encyclopedic-style text perfect for both browsing and deep research. Extraordinary photos and real-world examples help explain these systems, while body breakthroughs features highlight the scientists and pioneers who made some of the greatest advancements in their fields. Final comprehension questions encourage reflection on what readers have learned.
