a) Adrenalin hormone is secreted by the adrenal gland. It helps to regulate heartbeat, blood pressure, metabolism in the times of stress or emergency to cope up with the situation.
b)
Nervous system:
(i) It consists of nerve impules between PNS, CNS and brain.
(ii) The axone and dendrite transmit through a coordinated effort.
(iii) The flow of information is rapid and the response is quick,
(iv) Nerve impulses are not specific in their action.
(v) Effects are short level.
Hormonal system:
(i) It consists of endocrine system which secrete hormones directly into blood.
(ii) The information is transmitted or transported through blood.
(iii) The information travels slowly and the response is slow.
(iv) Each hormone has specific action
(v) It has prolonged effects.
