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4

In mammals the function of sympathetic nervous system is

A. contraction of hair muscles

B. contraction of pupil

C. stimulation of sweat glands

D. acceleration of heart beats

Correct Answer :

D. acceleration of heart beats


Related Questions

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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 intensity of stimulus determines the

A. amplitude of action potentials in the neuron

B. amplitude and frequency of action potentials in a neuron

C. frequency of action potentials in a neuron

D. amplitude of resting and action potentials in a neuron

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4

Which of the cranial nerve is mixed :

A. Optic

B. Olfactory

C. Vagus

D. Trochlear

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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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Spinal cord is a part of

A. CNS

B. SA node

C. AV node.

D. Parasympathetic nervous system

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The 8th cranial nerve of frog is

A. auditory

B. optic

C. olfactory

D. glossopharyngeal

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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

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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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The chemical transmitter of nerve impulses is

A. cholinesterase

B. acetyl CoA

C. acetylcholine

D. adrenaline

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4

The second cranial nerve is

A. optic

B. trigeminal

C. olfactory

D. abducen

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The smallest cranial nerve is

A. optic

B. olfactory

C. auditory

D. abducens

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The largest cranial nerve is

A. optic

B. facial

C. vagus

D. mandibular

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4

Spinal cord is protected by

A. aorta

B. sternum

C. trachea

D. vertebral column

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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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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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4

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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4

The basic anatomic and physiologie unit of the nervous system is

A. nerves

B. neuron

C. nephron

D. brain

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4

In mammals the function of sympathetic nervous system is

A. contraction of hair muscles

B. contraction of pupil

C. stimulation of sweat glands

D. acceleration of heart beats

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4

Cranial and spinal nerves constitute

A. CNS

B. autonomic nervous system

C. peripheral nervous system

D. sympathetic nervous system

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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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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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4

Nerve impulse is

A. carried by afferent and efferent branches

B. not carried by afferent and efferent branches

C. carried away and brought by efferent branches

D. brought by afferent and carried by efferent branches

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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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Pia mater and dura mater are referred as

A. hypothalamus

B. crura cerebri

C. cerebrospinal sheath

D. meninges

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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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4

Sensory nerve fibres enter the spinal cord through

A. dorsal root

B. ventral root

C. cranial nerves

D. central canal

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The anterior choroid plexus is situated in the roof of

A. diocoel (III Ventride)

B. metacoel (IV Ventride)

C. olfactocoel

D. optocoel

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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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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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Body temperature, hunger and water balance is regulated by

A. hypothalamus

B. medulla oblongata

C. pons

D. cerebellum