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

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
by

1 Answer

Answer :

B. Atrial refractory period
by

Related questions

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

Description : 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

Last Answer : B. Atrial refractory period

Full activation of the sympathetic nervous system, as in maximal exercise, can produce all of the following responses except (a) Bronchial relaxation (b) Decreases intestinal motility (c) Increased renal blood flow (d) Mydriasis (e) Increased heart rate (tachycardia)

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Last Answer : Ans: C

The following action of adrenaline is mediated by both α and β receptors producing the same directional effect: A. Cardiac stimulation B. Intestinal relaxation C. Dilatation of pupil D. Bronchodilatation

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Last Answer : B. Intestinal relaxation

The following action of adrenaline is mediated by both α and β receptors producing the same directional effect: A. Cardiac stimulation B. Intestinal relaxation C. Dilatation of pupil D. Bronchodilatation

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Quinidine has the following action on electrophysiological properties of the heart except: A. Decreases automaticity of Purkinje fibres B. Abolishes after depolarizations C. Prolongs refractory period of atrial fibres D. Decreases membrane responsiveness of atrial and ventricular fibres

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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

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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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The effect of sympathetic nervous system include: a. contraction of the bladder detrusor muscle b pupillary dilatationc. reduced gastrointestinal motility d. constricts bronchiole smooth muscle

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The effect of sympathetic nervous system include: a. contraction of the bladder detrusor muscle b pupillary dilatation c. reduced gastrointestinal motility d. constricts bronchiole smooth muscle

Description : The effect of sympathetic nervous system include: a. contraction of the bladder detrusor muscle b pupillary dilatation c. reduced gastrointestinal motility d. constricts bronchiole smooth muscle

Last Answer : reduced gastrointestinal motility

Branch of PNS which transmit impulses from CNS to involuntary organ and classified into sympathetic & parasympathetic neural system is

Description : Branch of PNS which transmit impulses from CNS to involuntary organ and classified into sympathetic & parasympathetic neural system is

Last Answer : Branch of PNS which transmit impulses from CNS to involuntary organ and classified into sympathetic & parasympathetic neural system is

Part of PNS which transmit impulses from CNS to involuntary organ and classified into sympathetic & parasympathetic neural system is

Description : Part of PNS which transmit impulses from CNS to involuntary organ and classified into sympathetic & parasympathetic neural system is

Last Answer : Part of PNS which transmit impulses from CNS to involuntary organ and classified into sympathetic & parasympathetic neural system is

Branch of PNS which transmit impulses from CNS to involuntary organ and classified into sympathetic & parasympathetic neural system is

Description : Branch of PNS which transmit impulses from CNS to involuntary organ and classified into sympathetic & parasympathetic neural system is

Last Answer : Branch of PNS which transmit impulses from CNS to involuntary organ and classified into sympathetic & parasympathetic neural system is

Part of PNS which transmit impulses from CNS to involuntary organ and classified into sympathetic & parasympathetic neural system is

Description : Part of PNS which transmit impulses from CNS to involuntary organ and classified into sympathetic & parasympathetic neural system is

Last Answer : Part of PNS which transmit impulses from CNS to involuntary organ and classified into sympathetic & parasympathetic neural system is

How the sympathetic and parasympathetic operate antagonistic?

Description : How the sympathetic and parasympathetic operate antagonistic?

Last Answer : What is the answer ?

In male sex organs _______ system is responsible for erection. (a) Sympathetic (b) Parasympathetic (c) Norepinephrine (d) None of the above

Description : In male sex organs _______ system is responsible for erection. (a) Sympathetic (b) Parasympathetic (c) Norepinephrine (d) None of the above

Last Answer : Ans: B

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

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Last Answer : the postganglionic neurones are largely unmyelinated

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

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

The ciliary ganglion: a. is found between the optic nerve and the medial rectus b. contains sympathetic nerve that supplies the sphincter pupillae c. is a parasympathetic relay ganglion for fibers from the Edinger-Westphal nucleus d. contains sensory nerve e. has a motor nerve that goes to the inferior oblique

Description : The ciliary ganglion: a. is found between the optic nerve and the medial rectus b. contains sympathetic nerve that supplies the sphincter pupillae c. is a parasympathetic relay ganglion for fibers from ... nucleus d. contains sensory nerve e. has a motor nerve that goes to the inferior oblique

Last Answer : is a parasympathetic relay ganglion for fibers from the Edinger-Westphal nucleus

Most organ of the body receive innervations a. sympathetic b. parasympathetic c. both d. non

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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.

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Last Answer : (a) Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal medulla.