- The Digestive System breaks down food to provide nutrients for energy, growth, and waste removal. It interacts with the Circulatory System to absorb and deliver nutrients, the Muscular System to move food, and the Nervous System (via the hypothalamus) to regulate appetite and digestion.
- The Circulatory System transports oxygen from the lungs to cells and returns carbon dioxide to the lungs. It delivers nutrients from the Digestive System, removes waste via the Excretory System, works with the Lymphatic and Immune Systems to transport white blood cells, is controlled by the Nervous System, and carries hormones from the Endocrine System.
- The Nervous System sends signals to control all other body systems. The hypothalamus plays a key role in maintaining homeostasis by coordinating with the Digestive, Circulatory, and other systems.
Parent Tip: Review the logic above to help your child master the concept of body system worksheet answer key.
