diffusion: particles move from a high concentration to a low concentration
Diffusion
Diffusion
Diffusion
Substances move down their concentration gradient. By that I mean where they move from an area of high concentration to an area of low concentration. This is essentially diffusion. Nutrients like glucose or oxygen that are high in the blood but low in the tissues, diffuse from the blood into the tissues. Wastes like carbon dioxide which are high in the tissues but low in the blood, diffuse from the tissues into the blood.
Oxygen, nutrients, waste products, hormones, and electrolytes are exchanged between the body cells and the blood plasma. This exchange occurs through the capillaries that connect the circulatory system with the cells in the tissues. Oxygen and nutrients are delivered to the cells, while waste products and carbon dioxide are removed from the cells and transported back to the excretory organs for elimination.
The area where chemicals pass between cells and blood is called the interstitial space. This space contains fluid that surrounds the cells and allows for the exchange of nutrients, waste products, and signaling molecules between the blood and the cells.
Interleukins
Capillary: A tiny blood vessel where substances are exchanged between the blood and the body cells.
capillaries
Diffusion
You just broke my brain cells
At the aveoli, the blood transfers CO2 and the hemoglobin on red blood cells picks up 02.