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What is the correct answer?

4

In frog purely sensory nerves are

A. I and II

B. II and III

C. I and III

D. III and IV

Correct Answer :

A. I and II


Related Questions

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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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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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4

Balance of muscle coordination is the function of

A. cerebellum

B. medulla

C. pons

D. diencephalon

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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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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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Spinal cord is a part of

A. CNS

B. SA node

C. AV node.

D. Parasympathetic nervous system

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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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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 outermost layer of brain is

A. pia mater

B. dura mater

C. arachnoid

D. none of these

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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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Cerebral cortex has centres of

A. thinking and intelligence

B. memory and learning

C. speech articulation

D. all of these

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Mammalian heart is innervated by a branch of

A. trigeminal

B. facial

C. vagus

D. spinal accessory

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

A. Amoeba

B. Earthworm

C. Cockroach

D. Hydra

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The 8th cranial nerve of frog is

A. auditory

B. optic

C. olfactory

D. glossopharyngeal

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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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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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Functionally the parasympathetic system is

A. inhibitory

B. stimulatory

C. both (a) and (b)

D. at times inhibitory and at times stimulatory

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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 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 thermoregulatory centre of the body is

A. spinal cord

B. hypothalamus

C. cerebellum

D. pituitary gland

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The second cranial nerve is

A. optic

B. trigeminal

C. olfactory

D. abducen

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Body temperature, hunger and water balance is regulated by

A. hypothalamus

B. medulla oblongata

C. pons

D. cerebellum

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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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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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The smallest cranial nerve is

A. optic

B. olfactory

C. auditory

D. abducens

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Spinal cord is protected by

A. aorta

B. sternum

C. trachea

D. vertebral column

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The SNS works through

A. acetylcholine

B. norepinephrine

C. noradrenaline

D. none of these