Biology, asked by janvisumanraj2635, 1 day ago

Read the following statements (i - iv) about human heart :
(i) Human heart is myogenic and our body has the ability to alter the heart rate , cardiac output but not stroke volume.
(ii) P - wave in ECG marks the atrial systole .
(iii) Adrenal medullary hormones acts on SA node and increases heart rate.
How many statement is/are correct form the above ?

Answers

Answered by bhupendra1666

0

Explanation:

(ii) P - wave in ECG marks the atrial systole .

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