The rate at which a drug reaches active sites in the brain is ...

[Shelles]

The rate at which a drug reaches active sites in the brain is determined mostly by its degree of
 
  A) water solubility.
  B) lipid solubility.
  C) drug metabolism via the liver.
  D) depot binding in blood, bone, and fat.
  E) drug metabolism in the kidneys.

Question 2

Which term below refers to sniffing a drug so as to absorb the drug through the nasal mucosa?
 
  A) inhalation
  B) insufflation
  C) topical
  D) intrarectal
  E) sublingual

[micaelaswann]

Answer to Question 1

Answer: B
Rationale: The rate at which a drug reaches active sites in the brain is determined mostly by its degree of lipid solubility.

Answer to Question 2

Answer: B
Rationale: Insufflation refers to sniffing a drug so as to absorb the drug through the nasal mucosa.