Answer:
Pharmacokinetics is the study of how medications flow through the body after being delivered. Absorption, distribution, metabolism, and excretion are the four stages involved in drug transport.
Explanation:
Detailed explanation of the 4 stages:
- The transport of a medicine from its administration site to the bloodstream is referred to as absorption. It occurs after a substance has been supplied, although there are a variety of ways to use or abuse a substance that can influence how the drug is absorbed.
- Once the medicine is absorbed, it is transported throughout the body. It attaches to receptors as it travels from the bloodstream to the tissues and intracellular fluids. Reversible distribution: chemicals released from receptors can return to the circulation.
- The metabolic phase begins once the substance has been distrusted. The substance is broken down in this area. This occurs primarily in the liver, the body's greatest internal organ. (While the liver is the principal location for drug metabolism, other organs such as the kidneys, gastrointestinal system, and lungs may also play a role.)
- Excretion is the final stage of a drug's journey through the body. This is how medicines and their metabolites leave the body, usually through urine or feces. Sweat, saliva, breast milk, and exhaled air can all contain drugs. A chemical can either be excreted in its metabolized or unaltered form.
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