Q. 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 and C Only.
B) A, B, C and D
C) A, C and D Only
D) A, B and D Only
Explanation
[Solution by Claude - not from source] Heart activity is regulated by nodal tissue (autorhythmic), the medullary cardiac centre (neural) and adrenal medullary hormones (adrenaline). Cortical hormones are not involved. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.