Harmless and beneficial bacteria far outnumber harmful varieties. Thousands of bacterial species live commensally in humans, and many provide health benefits to humans, aiding in digestion, for example, or helping to prevent the establishment of colonies of pathogenic bacteria.armless and beneficial bacteria far outnumber harmful varieties. Thousands of bacterial species live commensally in humans, and many provide health benefits to humans, aiding in digestion, for example, or helping to prevent the establishment of colonies of pathogenic bacteria.
ADH (Antidiuretic Hormone) The brain and kidneys regulate the amount of water excreted by the body. When the blood volume is low, the concentration of solutes in the blood is high. When the hypothalamus senses this low blood volume and increased serum osmolality it synthesizes ADH, a small peptide molecule.
Regulates salt, water balance, and blood pressure. Adrenal glands. Corticosteroid. Controls key functions in the body; acts as an anti-inflammatory; maintains blood sugar levels, blood pressure, and muscle strength; regulates salt and water balance. Pituitary gland. Antidiuretic hormone (vasopressin) Affects water retention in kidneys; controls blood pressure. Pituitary gland. Adrenocorticotropic hormone (ACTH) Controls production of sex hormones (estrogen in women and testosterone in men) and the production of eggs in women and sperm in men. Pituitary gland. Growth ...