Why is it so difficult for many toxins and poisons to penetrate the blood-brain barrier?
a. Because the human immune system has killer t-cells that attack such foreign agents.
b. Because those agents are too large to get out of the human blood stream.
c. Because the presence of such invaders triggers a fever, which kills them.
d. Because those agents are not soluble in fat.
Answer: D
Psychology
You might also like to view...
The characteristic flavor of high protein foods and glutamates is known as ________
Fill in the blanks with correct word
Psychology
Which of the following are commonly prescribed as hypnotics?
A) barbiturates B) tricyclic antidepressants C) benzodiazepines D) serotonin antagonists E) melatonin
Psychology