Neurohumoral Transmission & Cholinergic

Which of the following is a reversible acetylcholinesterase inhibitor commonly used in the treatment of Myasthenia Gravis?

• Scopolamine

• Atropine

• Pyridostigmine

• Neostigmine

What is the mechanism of action of Neostigmine in the treatment of Myasthenia Gravis?

• Inhibition of acetylcholinesterase

• Blocking nicotinic receptors

• Enhancing dopamine release

• Inhibition of monoamine oxidase

Which of the following is a common side effect of acetylcholinesterase inhibitors?

• Dry mouth

• Increased salivation

• Constipation

• Insomnia

Neurohumoral transmission primarily involves the release of:

• Peptides into the cerebrospinal fluid
  

• Hormones into the bloodstream

• Neurotransmitters across synaptic clefts

• Ions through ion channels

Which of the following neurotransmitters is primarily involved in cholinergic transmission?

• Norepinephrine

• Acetylcholine

• Glutamate

• GABA

Which receptor type is activated by acetylcholine in the parasympathetic nervous system?

• Nicotinic

• Muscarinic

• Beta-adrenergic receptors

• Alpha-adrenergic receptors

In response to bright light, the pupil undergoes:

• Miosis

• Mydriasis

• Cycloplegia

• Accommodation