Question

Cardiac activities of the heart are regulated by: A. Nodal tissue
B. A special neural centre in the medulla oblongata
C. Adrenal medullary hormones
D. Adrenal cortical hormones
Choose the correct answer from the options given below:

• A. A, B, C and D
• B. A, C and D Only
• C. A, B and D Only
• D. A, B and C Only

Hint:

The heart rate and cardiac output are primarily regulated by the autonomic nervous system and hormones, including both adrenal medullary and cortical hormones.