Chapter 13: Cholinergic transmission

Chapter 13: Cholinergic transmission

Complete Chapter Questions With Answers

Sample Questions Are Posted Below

MULTIPLE CHOICE

1. Activation  of muscarinic M₂ receptors

1. increases calcium conductance
2. increases potassium conductance
3. increases cardiac rate and force
4. causes central nervous system excitation
5. produces vascular smooth muscle relaxation

Answer b: increases potassium conductance

1. Succinylcholine is characteristically an agonist at

1. muscarinic M₁ receptors
2. muscarinic M₂ receptors
3. muscarinic M₃ receptors
4. nicotinic receptors in skeletal muscle
5. nicotinic receptors in autonomic ganglia

Answer d: nicotinic receptors in skeletal muscle

1. The second messengers formed by activation of muscarinic acetylcholine receptors include

1. inositol triphosphate
2. cyclic AMP
3. cyclic GMP
4. eicosanoids
5. guanosine triphosphate

Answer a: inositol triphosphate

1. Pilocarpine lowers intraocular pressure by

1. decreasing aqueous humor formation
2. contracting the iris sphincter muscle
3. contracting the ciliary muscle
4. relaxing the iris sphincter muscle
5. relaxing the ciliary muscle

Answer c: contracting the ciliary muscle