NEET MDS Quiz - Practice Test

1

Pharmacology

Which of following statement about drug action is false ?

1) �Competitive antagonist has no intrinsic activity but affinity
2) �Competitive antagonist has intrinsic activity and affinity
3) �Partial agonist has submaximal intrinsic activity and affinity
4) �Inverse agonists have affinity but minus intrinsic activity.

Option 1

Option 2

Option 3

Option 4

📝 Explanation:

Competitive antagonists bind to receptors but do not activate them, meaning they have no intrinsic activity. They have affinity for the receptor, allowing them to compete with agonists for binding.

2

Pharmacology

The main excitatory neuro transmitter in CNS is
   1)    Glycine
   2)    Acetyl choline
   3)    Aspartate
   4)    Glutamate

Option 1

Option 2

Option 3

Option 4

📝 Explanation:

The chemical compound acetylcholine (ACh) is a neurotransmitter in both the peripheral nervous system (PNS)and central nervous system (CNS) in many organisms including humans. Acetylcholine is one of many neurotransmitters in the autonomic nervous system (ANS) and the only neurotransmiter used in the somatic nervous system.

3

Pharmacology

The Beta Blocker with local Anesthetic effect is

1) Pindolol
2) Atenolol
3) Esmorolol
4) Timolol

Option 1

Option 2

Option 3

Option 4

📝 Explanation:

Local anesthetic action, also known as "membrane-stabilizing" action, is a prominent effect of several -blockers Acebutolol, Labetalol, Pindolol Propranolol.
This action is the result of typical local anesthetic blockade of sodium channels and can be demonstrated experimentally in isolated neurons, heart muscle, and skeletal muscle membrane.

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