来自《耶鲁大学开放课程：生物医学工程探索 第12集 第12集》
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down the equations for this but you could do that,你也可以写这个方程 -
and you could solve this equation.然后求出它的解 -
What you would find is this你会发现这个曲线 -
curve here which matches your intuition, probably.可能和你的直觉一致 -
That what happens if I swallow a当我吃下一个药片 -
pill and that pill dissolves in my intestinal tract然后它在我的肠道中溶解 -
and then molecules get absorbed slowly into the body,药物分子慢慢地被身体吸收 -
is that right after I take the pill the concentration我吃下药片后 在我身体的大部分区域 -
hasn't changed inside my blood yet,血液中药物的浓度 -
inside the bulk of my body.并不会立即改变 对不对 -
The molecules are still outside your body,药物还在体外 -
they're still in your intestinal tract.它们还在肠道中