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Extrinsic regulation of cardiac activity...

Extrinsic regulation of cardiac activity is brought about by

A

Thyroxine and nodal tissue

B

Epinephrine and Thyroxine

C

Sympathetic division and nodal tissue

D

Nodal tissue and epinephrine

Text Solution

Verified by Experts

The correct Answer is:
B
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    A
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    B
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    C
    thyroxine, calcitonin, thyroid gland
    D
    aldosterone, corticosterone, cortex of adrenal glands
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