Digestive system – The digestive system breaks down the food we eat into its most basic components, such as glucose (sugars), amino acids (which are the building blocks of protein), or fatty acids (that makeup fats). The nutrients from a digested meal are subsequently transported to every cell in the body by the small intestine’s absorption into the bloodstream. Your body can absorb and use nutrients broken down into small enough pieces by the digestive system for cell development, repair, and energy.
Respiratory system – In order to breathe, we need our lungs and respiratory system. With inspiration or inhalation, they send carbon dioxide out of our bodies while bringing oxygen into them (called exhalation or expiration ). Respiration is the process of exchanging carbon dioxide and oxygen.
Circulatory system – Blood vessels in the circulatory system are responsible for moving blood away from and back towards the heart. Blood is transported away from the heart by arteries and returned via veins. Cells receive oxygen, nutrition, and hormones through the circulatory system, which also eliminates waste materials like carbon dioxide. The circulatory functions include:
providing nutrients to cells.
transporting the metabolic byproducts to the excretory organs for elimination
defending the body from illness and infection
After an injury, bleeding stops with clotting.