Question

QUESTION 16

Competitive antagonists are also referred to as:

		partial agonists
		insurmountable antagonists
		agonist-antagonists
		surmountable antagonists

QUESTION 17

Which of the following defines the "half-life" of a drug?

		the time taken for it to metabolize in the liver
		the time taken for its concentration to increase from one-half to full, after the last dose
		the time taken for its concentration to decrease from full to one-half, after the last dose
		the time taken for it to be excreted by the kidneys

QUESTION 18

Which of the following carries blood directly to the liver?

		Lymphatic portal circulation
		Renal portal circulation
		A biochemical pathway
		Hepatic portal circulation

Answer 1

Question 16:

Agonist- antagonists

Antagonist is a drug that attenuates the effect of an agonist..it can be competitive or non - competitive..A competitive antagonist binds to the same site as the agonist but does not activate it,thus block the action.

Question 17:

The time taken for its concentration to decrease from full to one-half,after the last dose

The half-life life of drug is the time it takes for the amount of it in your body to be reduced by half.

Question 18:

Hepatic portal vein

Hepatic portal vein is a blood vessel that carries blood from the gastrointestinal tract,gall bladder, pancrease and spleen to the liver.