Final answer:
Absorption is the process where a drug is taken up from the site of administration and transported to the bloodstream.
Step-by-step explanation:
The process where a drug is taken up from the site of administration and is transported to the bloodstream is called absorption.
Absorption can occur through five mechanisms: active transport, passive diffusion, facilitated diffusion, co-transport, and endocytosis.
For example, when a drug is taken orally, it enters the digestive tract and is absorbed into the bloodstream through the intestinal wall.