A.Noradrenaline
B.Acetylcholine
C.Both (a) & (b)
D.None of these
Related Mcqs:
- Heart rate in neurogenic hearts in increased by release of:
- Slowing of heart rate in man is done by:
- Free nerve endings of sympathetic nervous system will release which of these substances during the condition of tachycardia in our body:
- Sympathetic nerve fibres increase the rate of heartbeat by releasing which of these at their free endings:
- Parasympathetic nerve fibres decrease the rate of heartbeat by releasing which of these at their free endings:
- The heart rate in man is increased by:
- What will happen to our heart beat in case our body temperature is decreased:
- Cholinergic fibres are those which liberate at their free ends:
- When sympathetic nerve supply to heart is completely cut off then heart rate will:
- Stimulation of heart through sympathetic nerve is a result of:
