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In which the following can increase the ...

In which the following can increase the rate of heart beat ? (A) Sympathetic neural signals.
(B) Parasympathetic neural signals
(C ) Adrenal medullary hormones.
(D) Vagus nerve
(E ) Thyroxine hormone
(F) Acetylcholine

A

A,C,E

B

D,E,F

C

A,C,D

D

B,D,F

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A
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