Question

Explain how the digestive, circulatory, lymphatic, endocrine, nervous and excretory systems in mammals work together to deliver oxygen, calories, biological molecules, and nutrients while removing metabolic waste and regulating water balance and blood pressure.

Answer 1

All those systems coordinate each other to deliver oxygen nutrients biomolecules and removes metabolic waste while balencing of blood and water pressure's.  

Digestive systems: it digest the food by mechanical grinding in mouth using teath and peristaltic movements in the stomach. It is also responsible for chemical break down of the food by enzymes like amylase for carbohydrates, pepsin produced from the stomach tripsin chymotripsin from liver for protein breakown and ligual and pancreatic lipase for the fat break down. These macromolecules like complex proteins carbohydrates and fats breakdown during digestion in gut to produces simple degraded forms like amino acids monosacharides and fatty acids which are readily absorbed in small intestine through microvilli and taken in to circulatory and lymphatic systems to other organs.

Circulatory system carries nutrients obtained from digestive system to the body tissues where they restructure complex macromolecules. It also absorb oxygen from respiratory terminals and transport it to the tissues where it collect co2 from them and transport back to lungs. Heart being a pumping organs collect and pumps oxygenated and deoxygenated blood to the organs it collects deoxygenated blood from tissues and oxygenated blood from lever and it also collect hormones from endocrine system transport to various targets like digestive system, respiratory system, and respiratory system.

Lymphatic system contains lymph nodes and lymph canals it obsorb fat and toxin's and other unwanted materials from blood and transport them to liver to detoxifying. It also deals with pathogens it filters back in to blood at lymph nodes.

Endocrine system provide chemical stimulus to the various functions like food digestion and obsorption from digestive systems, vasodilation and construction of circulatory system, water absorption from excretory system etc. Like chemical stimulus provided by the endocrine system nervous system provide electrical stimulus for each and every ery metabolic process either small or complex controlled by this time of harmony release respiration and digestion circulation excretion all are controlled by this.

Respiratory system provide oxygen to each body cell for its survival as oxygen acts as electron receiver to gain metabolic energy for cell function's and it releases co2 to atmosphere.

Excretory system filter's waste and excrete unwanted things from the body it collect digestive and metabolic waste and process them through kidneys where the fluids fitter out to produce urine and large intestine where food waste is concentrated and excreted out. Skin also swet to discharge salts and other waste's from body.

So collectively nervous and endocrine system control whole functioning while other are well coordinated.