D1: Analyse how two body systems interrelate to perform a named function/functions
Even though the systems may seem very separate in their activities the digestive system and respiratory system both contribute to work together. The systems cannot work by themselves as they both provide the materials needed throughout the body. They supply energy to all the cells throughout the body. The respiratory system and digestive system allow each other to function.
The digestive system is made up of all different organs which starts at the mouth and finishes at the anus but on the way involves all other organs; these organs help to break down and absorb the food. Our bodies need food as this is what helps us to do everyday tasks. The food we eat once in our body is used for growth repair, cell function, heart function, warmth and breathing. If we don’t eat enough food then people will find that they are lethargic and find everyday tasks very difficult for example; running, as the body has no energy from food they will get tired quickly and their stamina will decrease and they will feel breathless. It’s not only the energy that the body needs from the food it’s also some chemicals as these certain chemicals help to maintain the bodies organs and keep them healthy .
Food and drink that we consume must be made into smaller molecules of nutrients by the body so it can be used for energy. The nutrient from the food goes into the veins and then it diffuses into the cells and is then transported around the body through the blood stream. The cell walls are 1 cell thick as then it allows the process of diffusion to occur.
The digestive system takes in food from your environment and then breaks it down to smaller molecules. Through the process of digestion, your body breaks large nutrient molecules into even smaller molecules; these smaller molecules enter the intestine and are then absorbed