The major postjunctional cholinergic receptor is of the muscarinic type at the following site: A. Postganglionic parasympathetic B. Adrenal medulla C. Autonomic ganglia D. Neuromuscular junction

The major postjunctional cholinergic receptor is of the muscarinic type at the following site: A. Postganglionic parasympathetic B. Adrenal medulla C. Autonomic ganglia D. Neuromuscular junction
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A. Postganglionic parasympathetic
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The major postjunctional cholinergic receptor is of the muscarinic type at the following site: A. Postganglionic parasympathetic B. Adrenal medulla C. Autonomic ganglia D. Neuromuscular junction

Description : The major postjunctional cholinergic receptor is of the muscarinic type at the following site: A. Postganglionic parasympathetic B. Adrenal medulla C. Autonomic ganglia D. Neuromuscular junction

Last Answer : A. Postganglionic parasympathetic

Muscarinic cholinergic receptors: A. Are located only on parasympathetically innervated effector cells B. Mediate responses by opening an intrinsic Na+ ion channel C. Are present on vascular endothelium which has no cholinergic nerve supply D. Predominate in the autonomic ganglia

Description : Muscarinic cholinergic receptors: A. Are located only on parasympathetically innervated effector cells B. Mediate responses by opening an intrinsic Na+ ion channel C. Are present on vascular endothelium which has no cholinergic nerve supply D. Predominate in the autonomic ganglia

Last Answer : C. Are present on vascular endothelium which has no cholinergic nerve supply

The following are true about acetylcholine receptors: a. receptors at all autonomic ganglia are nicotinic b. receptors at the skeletal neuromuscular junction are muscarinic c. acetylcholine receptors in the autonomic ganglia can be selectively blocked by atropine d. acetylcholine receptors in the neuromuscular junction can be selectively blocked by tubocurarine

Description : The following are true about acetylcholine receptors: a. receptors at all autonomic ganglia are nicotinic b. receptors at the skeletal neuromuscular junction are muscarinic c. ... atropine d. acetylcholine receptors in the neuromuscular junction can be selectively blocked by tubocurarine

Last Answer : acetylcholine receptors in the neuromuscular junction can be selectively blocked by tubocurarine

Cholinergic muscarinic receptor stimulation produces the following effects except: A. Sweating B. Rise in blood pressure C. Bradycardia D. Urination

Description : Cholinergic muscarinic receptor stimulation produces the following effects except: A. Sweating B. Rise in blood pressure C. Bradycardia D. Urination

Last Answer : B. Rise in blood pressure

The following are true about the autonomic nervous system: a. the postganglionic neurones are largely unmyelinated b. all preganglionic neurones are cholinergic c. the preganglionic neurones of the sympathetic nervous system are shorter than the parasympathetic nervous system d. the parasympathetic outflow is only found in the cranial nerves

Description : The following are true about the autonomic nervous system: a. the postganglionic neurones are largely unmyelinated b. all preganglionic neurones are cholinergic c. the preganglionic neurones of ... parasympathetic nervous system d. the parasympathetic outflow is only found in the cranial nerves

Last Answer : the postganglionic neurones are largely unmyelinated

Muscarinic cholinergic receptors (a) Are located only on parasympathetically innervated effector cells (b) Mediate responses by opening an instrinsic Na+ ion channel (c) Are present on vascular endothelium which has no cholinergic nerve supply (d) Predominate in the autonomic ganglia

Description : Muscarinic cholinergic receptors (a) Are located only on parasympathetically innervated effector cells (b) Mediate responses by opening an instrinsic Na+ ion channel (c) Are present on vascular endothelium which has no cholinergic nerve supply (d) Predominate in the autonomic ganglia

Last Answer : Ans: C

Muscarinic cholinergic receptors: A. Are located only on parasympathetically innervated effector cells B. Mediate responses by opening an intrinsic Na+ ion channel C. Are present on vascular endothelium which has no cholinergic nerve supply D. Predominate in the autonomic ganglia

Description : Muscarinic cholinergic receptors: A. Are located only on parasympathetically innervated effector cells B. Mediate responses by opening an intrinsic Na+ ion channel C. Are present on vascular endothelium which has no cholinergic nerve supply D. Predominate in the autonomic ganglia

Last Answer : C. Are present on vascular endothelium which has no cholinergic nerve supply

Acetylcholine is a neurotransmitter at: a. sweat glands b. the adrenal medulla c. parasympathetic ganglia d. all above

Description : Acetylcholine is a neurotransmitter at: a. sweat glands b. the adrenal medulla c. parasympathetic ganglia d. all above

Last Answer : all above

The following are true about the autonomic nervous system: a. the preganglionic fibres are mainly myelinated, slow conducting B fibres b. the postganglionic fibres are mainly unmyelinated C fibres c. all preganglionic neurones are cholinergic neurons d. all above

Description : The following are true about the autonomic nervous system: a. the preganglionic fibres are mainly myelinated, slow conducting B fibres b. the postganglionic fibres are mainly unmyelinated C fibres c. all preganglionic neurones are cholinergic neurons d. all above

Last Answer : all above

The following are true about the muscarinic receptors: a. they are found at the postganglionic parasympathetic synapses b. they can be selectively blocked by atropine c. M1 muscarinic receptors are found in the brain d. all above

Description : The following are true about the muscarinic receptors: a. they are found at the postganglionic parasympathetic synapses b. they can be selectively blocked by atropine c. M1 muscarinic receptors are found in the brain d. all above

Last Answer : all above

With regard to the autonomic nervous system: a. the dorsal root ganglia is made up mainly of the cell bodies of the sympathetic nerves b. the preganglionic sympathetic fibres are usually longer than preganglionic parasympathetic fibres c. acetylcholine is the neurotransmitter at the ganglia of both sympathetic and parasympathetic nervous system d. botulin toxin blocks acetylcholine receptors

Description : With regard to the autonomic nervous system: a. the dorsal root ganglia is made up mainly of the cell bodies of the sympathetic nerves b. the preganglionic sympathetic fibres ... the ganglia of both sympathetic and parasympathetic nervous system d. botulin toxin blocks acetylcholine receptors

Last Answer : the dorsal root ganglia is made up mainly of the cell bodies of the sympathetic nerves

Which endocrine organ acts like the postganglionic neurons of the sympathetic nervous system? A) thyroid gland B) thymus gland C) adrenal cortex D) adrenal medulla E) islets of Langerhans of the pancreas

Description : Which endocrine organ acts like the postganglionic neurons of the sympathetic nervous system? A) thyroid gland B) thymus gland C) adrenal cortex D) adrenal medulla E) islets of Langerhans of the pancreas

Last Answer : D) adrenal medulla

The smooth muscle structure that is relaxed by cholinergic drugs is: A. Colon B. Gastric fundus C. Major bronchi D. Bladder trigone

Description : The smooth muscle structure that is relaxed by cholinergic drugs is: A. Colon B. Gastric fundus C. Major bronchi D. Bladder trigone

Last Answer : D. Bladder trigone

The cotransmitter may serve the following function/ functions: A. Regulate the release of the primary transmitter from the nerve ending B. Alter postjunctional action of the primary transmitter C. Itself act as an alternative transmitter D. All of the above

Description : The cotransmitter may serve the following function/ functions: A. Regulate the release of the primary transmitter from the nerve ending B. Alter postjunctional action of the primary transmitter C. Itself act as an alternative transmitter D. All of the above

Last Answer : D. All of the above

The cotransmitter may serve the following function/ functions: A. Regulate the release of the primary transmitter from the nerve ending B. Alter postjunctional action of the primary transmitter C. Itself act as an alternative transmitter D. All of the above

Description : The cotransmitter may serve the following function/ functions: A. Regulate the release of the primary transmitter from the nerve ending B. Alter postjunctional action of the primary transmitter C. Itself act as an alternative transmitter D. All of the above

Last Answer : D. All of the above

Which of the following is a G protein coupled receptor: A. Muscarinic cholinergic receptor B. Nicotinic cholinergic receptor C. Glucocorticoid receptor D. Insulin receptor

Description : Which of the following is a G protein coupled receptor: A. Muscarinic cholinergic receptor B. Nicotinic cholinergic receptor C. Glucocorticoid receptor D. Insulin receptor

Last Answer : A. Muscarinic cholinergic receptor

Cholinergic muscarinic receptor stimulation produces the following effects except: A. Sweating B. Rise in blood pressure C. Bradycardia D. Urination

Description : Cholinergic muscarinic receptor stimulation produces the following effects except: A. Sweating B. Rise in blood pressure C. Bradycardia D. Urination

Last Answer : B. Rise in blood pressure

Which of the following is a G protein coupled receptor: A. Muscarinic cholinergic receptor B. Nicotinic cholinergic receptor C. Glucocorticoid receptor D. Insulin receptor

Description : Which of the following is a G protein coupled receptor: A. Muscarinic cholinergic receptor B. Nicotinic cholinergic receptor C. Glucocorticoid receptor D. Insulin receptor

Last Answer : A. Muscarinic cholinergic receptor

Epinephrine is synthesised in (A) Chromaffin cells of adrenal medulla (B) Sympathetic ganglia (C) Brain (D) All of these

Description : Epinephrine is synthesised in (A) Chromaffin cells of adrenal medulla (B) Sympathetic ganglia (C) Brain (D) All of these

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Pyridostigmine differs from neostigmine in that: A. It is more potent orally B. It is longer acting C. It produces less muscarinic side effects D. It does not have any direct action on NM receptors

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Last Answer : B. It is longer acting

The cardiac muscarinic receptors: A. Are of the M1 subtype B. Are of the M2 subtype C. Are selectively blocked by pirenzepine D. Function through the PIP2 → IP3/DAG pathway

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Edrophonium is more suitable for differentiating myasthenic crisis from cholinergic crisis because of its: A. Shorter duration of action B. Longer duration of action C. Direct action on muscle end-plate D. Selective inhibition of true cholinesterase

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Last Answer : A. Shorter duration of action

A person entering an empty room suddenly finds a snake right in front on opening the door. Which one of the following is likely to happen in his neuro- hormonal control system? (a) Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal medulla. (b) Neurotransmitters diffuse rapidly across the cleft and transmit a nerve impulse. (c) Hypothalamus activates the parasympathetic division of brain. (d) Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal cortex.

Description : A person entering an empty room suddenly finds a snake right in front on opening the door. Which one of the following is likely to happen in his neuro- hormonal control system? ... brain. (d) Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal cortex.

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The sympathetic and parasympathetic systems exert functionally opposite influences on the following parameters except: A. Heart rate B. Atrial refractory period C. Pupil diameter D. Intestinal motility

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Last Answer : B. Atrial refractory period

Which of the following organs is innervated only by parasympathetic nerves: A. Iris muscles B. Ciliary muscle C. Sweat glands D. Splenic capsule

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Last Answer : B. Ciliary musclele

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The quarternary analogues of belladonna alkaloids are preferred over the natural alkaloids for antisecretory/ antispasmodic indications because: A. They have additional nicotinic receptor blocking activity B. They are incompletely absorbed after oral administration C. They are devoid of CNS and ocular effects D. Dose to dose they are more potent than atropine

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Last Answer : D. Blockade of muscarinic autoreceptors on vagal nerve endings

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A suspected case of poisoning has been brought to the casualty with weakness, fainting, involuntary passage of urine and stools, profuse sweating, salivation, watering from nose and eyes. His pulse is 120/min, low volume, BP 90/60 mm Hg, respiration shallow, pupil constricted, muscles flabby with occasional fasciculations. Which is the most likely type of poisoning: A. Belladonna B. Barbiturate C. Anticholinesterase D. Dicophane (DDT)

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Assertion : Adrenal gland have dual origin. Reason : The aderenal cortex develops from endoderm while adrenal medulla develops from mesoderm.

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