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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

Correct Answer :

A. dorsal root


Related Questions

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4

The number of spinal nerves in man is

A. 20 pairs

B. 31 pairs

C. 21 pairs

D. 35 pairs

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4

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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4

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 protected by

A. aorta

B. sternum

C. trachea

D. vertebral column

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

A. Amoeba

B. Earthworm

C. Cockroach

D. Hydra

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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

The 8th cranial nerve of frog is

A. auditory

B. optic

C. olfactory

D. glossopharyngeal

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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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Pia mater and dura mater are referred as

A. hypothalamus

B. crura cerebri

C. cerebrospinal sheath

D. meninges

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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 smallest cranial nerve is

A. optic

B. olfactory

C. auditory

D. abducens

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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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An afferent neuron is

A. motor

B. sensory

C. both (a) and (b)

D. none 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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Which of the cranial nerve is mixed :

A. Optic

B. Olfactory

C. Vagus

D. Trochlear

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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 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

Birds can move swiftly and accurately in three dimensions of space due to well developed

A. cerebrum

B. cerebellum

C. pons varolii

D. medulla oblongata

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The second cranial nerve is

A. optic

B. trigeminal

C. olfactory

D. abducen

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Balance of muscle coordination is the function of

A. cerebellum

B. medulla

C. pons

D. diencephalon

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The chemical transmitter of nerve impulses is

A. cholinesterase

B. acetyl CoA

C. acetylcholine

D. adrenaline

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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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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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4

Purely motor nerve is

A. optic

B. abducens

C. ophthalmic

D. palatinus

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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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4

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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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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The outermost layer of brain is

A. pia mater

B. dura mater

C. arachnoid

D. none of these