Does blood bring cell things like oxygen and digested food?

Yes, blood is responsible for transporting essential substances such as oxygen and digested food to cells throughout the body. To understand how this happens, let's break it down step by step:

1. Oxygen: When we breathe, oxygen from the air enters our lungs. It then diffuses into our bloodstream through tiny blood vessels called capillaries in the lungs. The oxygen molecules bind to a protein called hemoglobin present in red blood cells, forming oxyhemoglobin. The oxygen-rich blood then circulates throughout the body, delivering oxygen to cells in need.

2. Digested Food: After we eat, the food is broken down into smaller molecules through the process of digestion in our stomach and intestines. These molecules, such as glucose (a sugar) and amino acids (building blocks of proteins), are absorbed into the bloodstream through the intestinal walls. They are then transported via the bloodstream to various cells that require these nutrients.

In summary, the oxygen and digested food molecules are carried by blood, specifically by the red blood cells, to reach the cells throughout our bodies. This delivery of essential substances is crucial for the proper functioning and survival of our cells and overall bodily health.