Define pharmacokinetics. name the four processes in pharmacokinetics and give an explanation of each.

Pharmacokinetics is the analysis of how the body copes with absorption,  distribution, metabolism & excretion of drugs under examination.

The four process of pharmacokinetics are absorption, distribution, metabolism and elimination.

Explanation:

Pharmacokinetics is the analysis of how the body copes with absorption,  distribution, metabolism & excretion of drugs under examination. The impacts and length of the drug's action are also considered.

The four process of pharmacokinetics are absorption, distribution, metabolism and elimination.

1) Absorption - Absorption is the motion of a drug into the blood from its administration site. Many drugs are absorbed through passive absorption, but certain drugs require transportation mediated by the carrier.

2) Distribution -  Distribution is the body wide motion of drugs

3) Metabolism -  It is the method of transforming a drug throughout the body and make it much more hydrophilic in order for the kidneys to secrete it from the body.

4) Elimination - Excretion is the elimination from the body of the substance. Several drugs are either excreted unchanged or emit as urine or some other form.

Answered

Explanation:

Pharmacokinetics is the branch of pharmacy which deals with the action of the body on the drug once it is administered in the body.

There are four process are followed when a drug is administered inside a body. These are absorption, distribution, metabolism and elimination or excretion.  

Absorption is the movement of drug from its site of administration into the blood. Most drugs are absorbed by passive absorption but drugs need carrier mediated transport.

Distribution is the movement of drug through out body. Determined by the blood flow into tissues and cells.

Metabolism is the transformation of blood within the body to make it more hydrophilic so that it can be easily excreted out of the system.

Excretion is the removal of substances from the body. Some drugs are either excreted out unchanged and some are excreted out as metabolites.