Interleukins
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.
The shared structures between nerve, bone, epithelial, and muscle cells is that they share reproduction structures and the same blood type.
diffusion: particles move from a high concentration to a low concentration
hemoglobin.
hemoglobin
White blood cells, specifically neutrophils and macrophages, produce a variety of chemicals such as cytokines, chemokines, and reactive oxygen species. These chemicals help regulate the immune response, attract other immune cells to the site of infection, and destroy invading pathogens.
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.
Red blood cells have haemoglobin which helps in the transport of oxygen and carbon dioxide.
White blood cells have a nucleus and red blood cells don't.
White blood cells have a nucleus and red blood cells don't.
Red blood cells contain hemoglobin, but white blood cells do not
Red blood cells contain hemoglobin, but white blood cells do not