Growth factors and cytotoxic factors also regulate inflammatory response. These cytokines and other chemicals recruit immune cells to the site of infection and promote healing of damaged tissue following the removal of pathogens. NFkB plays a key role in regulating the immune response to infection.
Stomata facilitate the exchange of gases in the leaf. Carbon dioxide (CO 2 ) diffuses into the leaf through the stomata for use in photosynthesis, and oxygen (O 2 ), the waste product of photosynthesis, diffuses out of the leaf through stomata. Stomata are also crucial for water transport through the xylem .
The system where the kidneys filter blood. Reproductive system: The sex organs required for the production of offspring. Respiratory system. The lungs and the trachea that bring air into the body. Skeletal system. Bones supporting the body and its organs. See also. List of distinct cell types in the adult human body; List of organs of the human body; Cardiovascular System; Digestive System; Nervous System