The autonomic nervous system is a coordinated motor system that consists of innervated cardiac muscle, smooth muscle, and glands. The ANS maintains homeostasis and provides a coordinated response to external stimulation. Much of homeostasis occurs involuntarily, but some autonomic processes have a degree of voluntary control (urination, sexual activity). The major components are the sympathetic and parasympathetic nervous systems.
The autonomic nervous system is a coordinated motor system that consists of innervated cardiac muscle, smooth muscle, and glands. The ANS maintains homeostasis and provides a coordinated response to external stimulation. Much of homeostasis occurs involuntarily, but some autonomic processes have a degree of voluntary control (urination, sexual activity). The major components are the sympathetic and parasympathetic nervous systems.
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Directions:
1 of 10
Q.1 Which of the following organs is innervated only by parasympathetic nerves
- Sweat glands
- Ciliary muscle
- Iris muscles
- Splenic capsule
Directions: .
2 of 10
Q.2 The following cotransmitter is most probably involved in mediating nonadrenergic-noncholinergic (NANC) relaxation of the gut
- Nitric oxide (NO)
- Adenosine
- Neuropeptide Y (NPY)
- Kallidin
3 of 10
Q.3 The major postjunctional cholinergic receptor is of the muscarinic type at the following site
- Neuromuscular junction
- Postganglionic parasympathetic
- Adrenal medulla
- Autonomic ganglia
4 of 10
Q.4 The choline ester resistant to both true and pseudo- cholinesterase is
- Bethanechol
- Butyrylcholine
- Methacholine
- Benzoylcholine
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Q.5 The smooth muscle structure that is relaxed by choli- nergic drugs is
- Colon
- Gastric fundus
- Bladder trigone
- Major bronchi
6 of 10
Q.6 Pilocarpine is used for
- Glaucoma
- Paralytic ileus
- Urinary retention
- Infection
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Q.7 The following inhibitor binds only to the ani-onic site of the cholinesterase enzyme
- Neostigmine
- Edrophonium
- Physostigmine
- Dyflos
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Q.8 Reactivation of cholinesterase enzyme occurs on hydrolysis of the inhibitor by the same enzyme mole- cule in case of the following anticholinesterase
- Edrophonium
- Dyflos
- Tacrine
- Neostigmine
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Q.9 Pyridostigmine differs from neostigmine in that
- It produces less muscarinic side effects
- It is more potent orally
- It is longer acting
- It does not have any direct action on NM receptor
10 of 10
Q.10 The site of action of miotics for therapeutic effect in angle closure glaucoma is
- Canal of Schlemm
- Ciliary body
- Ciliary muscle
- Sphincter pupillae muscle