Explain how the digestive, cardiovascular and respiratory systems are interrelated

The digestive system is also another system within the body that interrelates with the respiratory system. This is so that it is able to act like a defence mechanism to the body. An example of when these two systems interrelate is when micro-organisms enter the body, the cells within the respiratory tract have the ability to produce large amounts of mucous that acts as a defence mechanism getting rid of the micro- organism in the body. Both systems also work together by providing nutrients in order for aerobic respiration to be carried out. The first part of the aerobic respiration is aided by both these systems as oxygen is inhaled by the respiratory system and glucose is broken down by the digestive system. (Glucose + Oxygen      Carbon Dioxide + Water + Energy). The digestive system also acts as an aid for the respiratory system by nutrients to the diaphragm that is needed to assist the process of breathing.

Furthermore, the digestive system can also interrelate with the cardiovascular system as nutrients that are provided by the digestive system are broken down by enzymes, the nutrients that are digested are essential for the human body as once they have been broken down they are absorbed into the blood and transported around the body. The cardiovascular system interrelates with the digestive system as the speed of digestion is speeded up with chemical signals that are given by the cardiovascular system, this is so that the rate that the nutrients are transported is increased and they are given around the body faster.   Kidneys need to excrete waste material, in order to do this toxins are provided by the digestive system and are transported by the cardiovascular system in order for the kidneys to be able to do this.

All systems within the body have to work with one another in order to keep the body functioning. The digestive system interrelates with the cardiovascular system. This system has the job role of breaking down food molecules into simple chemicals in the body. These chemicals are then transported around the body via the blood. The respiratory system provides the body with oxygen and removes unwanted carbon dioxide; this is done with the aid of the cardiovascular system. The cardiovascular system however, plays a huge role within the body and its functioning, as this is the system that is responsible for pumping blood around the body and carrying oxygen and nutrients around the body via the blood. Therefore, the respiratory system and the cardiovascular system also have to do their function so that this can happen. The food that is eaten is digested by the digestive system and the nutrients are given to the body via the blood, this is the same for the respiratory system as oxygen that is breathed in allows us to breathe as well as providing it to the rest of the body via the heart.