Question

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

Answer 1

The correct option is A A,C,E

The correct answer is A (A, C , E)

Sympathetic nervous system is responsible for increasing the rate of heart beat, it also increases the cardiac output.

Adrenal medullary hormones Epinephrine and Norepinephrine increase the rate of heart beat. (Adrenal medulla is a modified part of sympathetic nervous system)

Thyroxine hormone also increases the rate of Heart beat.`