131.
Unidirectional transmission of a nerve impulse through nerve fibre is due to the fact that
A
Nerve fibre is insulated by a medullary sheath.
B
Sodium pump starts operating only at the cyton and then continues into the nerve fibre.
C
Neurotransmitters are released by dendrites and not by axon endings.
D
Neurotransmitters are released by the axon endings and not by dendrites
Answer :
Neurotransmitters are released by the axon endings and not by dendrites
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132.
Female hormone is
A
Progesterone
B
Estrogen
C
Estradiol
D
All of the above
Answer :
All of the above
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133.
Nerve impulse travel through nerve with the help of
A
Acetylcholine and sympathetin
B
Choline and acetylcho line
C
Adrenaline and noradrenaline
D
None of the above
Answer :
Acetylcholine and sympathetin
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134.
Arbor vitae is present in
A
Cerebellum
B
Cerebrum
C
Diencephalon
D
Optooel
Answer :
Cerebellum
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135.
The gland that regresses with age is
A
adrenal
B
gonad
C
thymus
D
thyroid
Answer :
thymus
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136.
Which is largest endocrine gland
A
Thyroid
B
Liver
C
Pituitary
D
Thymus
Answer :
Thyroid
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137.
Hypophysectomy leads to
A
Heart attack
B
Increased digestion
C
Death
D
Regression of reproductive function
Answer :
Regression of reproductive function
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138.
Speed of impulse on nerves in mammals is
A
1 meter /sec.
B
100 meter /sec.
C
1000 meter / sec.
D
None of the above
Answer :
100 meter /sec.
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139.
Which one of the following does not match is biological category of chemical substance
A
Gastrin
B
Renin
C
Oxytocin
D
Creatinine
Answer :
Creatinine
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140.
The nerves leading to the central nervous system are called
A
Afferent
B
Efferent
C
Motor
D
None of the above
Answer :
Afferent
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