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What is the correct answer?

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The SNS works through

A. acetylcholine

B. norepinephrine

C. noradrenaline

D. none of these

Correct Answer :

B. norepinephrine


Related Questions

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Cerebral cortex has centres of

A. thinking and intelligence

B. memory and learning

C. speech articulation

D. all of these

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Pia mater and dura mater are referred as

A. hypothalamus

B. crura cerebri

C. cerebrospinal sheath

D. meninges

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Foramen of Monro provides a passage connecting

A. brain and spinal cord

B. lateral ventricles with III ventride in brain

C. IV ventricle with optic ventride

D. middle ear with pharynx

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Purely motor nerve is

A. optic

B. abducens

C. ophthalmic

D. palatinus

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All or none law of nerve impulse conduction states that

A. an impulse will continue to be conducted until the stimulus is removed

B. an impulse will be generated if the stimulus is of a particular strength, below which there won't be any response and increase above the minimal does not produce any enhanced effect

C. the brain receives the complete information or does not receive at all

D. none of these

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Which one of the animals has a nervous system but no brain?

A. Amoeba

B. Earthworm

C. Cockroach

D. Hydra

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Arborvitae includes

A. grey matter

B. white matter

C. both (a) and (b)

D. none of these

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The nodes of Ranvier are responsible for]

A. saltatory conduction

B. speed of conduction

C. reflex actions

D. direction of propagation of impulses

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The outermost layer of brain is

A. pia mater

B. dura mater

C. arachnoid

D. none of these

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The largest number of cell bodies of] neurons in our body is found in

A. white matter of spinal cord

B. white matter of brain

C. grey matter of brain

D. grey matter of spinal cord

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Cranial and spinal nerves constitute

A. CNS

B. autonomic nervous system

C. peripheral nervous system

D. sympathetic nervous system

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The number of spinal nerves in man is

A. 20 pairs

B. 31 pairs

C. 21 pairs

D. 35 pairs

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The SNS works through

A. acetylcholine

B. norepinephrine

C. noradrenaline

D. none of these

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4

An afferent neuron is

A. motor

B. sensory

C. both (a) and (b)

D. none of these

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Voluntary control over skeletal muscles originates in the

A. cerebellum

B. cerebrum

C. medulla oblongata

D. none of these

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The autonomic nervous system controls

A. muscle contractions

B. reflex movement and equilibrium

C. activity of visceral organs

D. both (a) and (b)

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The synaptic knots are present at the terminal endings of

A. the neuron

B. the dendron

C. the axon

D. both (b) and (c)

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Which of the following tissues in a human being uses the greatest amount of energy per unit weight ?

A. Heart tissue

B. Nervous tissue

C. Muscle tissue

D. Epithelial tissue

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White matter consists of

A. nerve fibres with myelinated sheath

B. nerve fibres without myelinated sheath

C. scattered areolar tissue

D. nerve fibres with blood vessels.

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Corpus callosum of the brain connects

A. optic chiasma

B. two cerebral hemispheres

C. two olfactory lobes

D. two optic lobes

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Spinal cord is a part of

A. CNS

B. SA node

C. AV node.

D. Parasympathetic nervous system

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Stimulation of sympathetic nerve of heart accelerates the heart beats as a result of

A. release of acetylcholin

B. release of adrenalin

C. release of heparin

D. inhibition of cholinesterase

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The thermoregulatory centre of the body is

A. spinal cord

B. hypothalamus

C. cerebellum

D. pituitary gland

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The chemical transmitter of nerve impulses is

A. cholinesterase

B. acetyl CoA

C. acetylcholine

D. adrenaline

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In frog purely sensory nerves are

A. I and II

B. II and III

C. I and III

D. III and IV

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Foramen of Monro is

A. gap in pelvic girdle of rabbit

B. foramen in the skull of frog

C. space in brain of frog and rabbit

D. pore in the interauricular septum in a mammalian heart

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Which one of the following are purely motor nerves?

A. Olfactory, trochlear, abducens

B. Trigeminal, facial, auditory

C. Vagus, facial, abducens

D. Abducens, trochlear, oculomotor

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In mammals, the cerebral hemispheres are joined by

A. foramen magnum

B. corpus callosum

C. corpus spongiosum

D. corpora quadrigemina

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Synaptic fatigue is due to

A. release of more adrenalin

B. release of more acetylcholine

C. exhaustion of neurotransmitter

D. none of these

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The energy required for the transmission of impulse is obtained from

A. stimulating agent

B. brain

C. nerve fibre

D. synapses