Answers

2015-02-01T19:43:45+05:30
Norepinephrine is a hormone  released from adrenal medula  in the blood stream and is a neurotransmitter too in CNS and sympathetic nervous system .Therefore performing the function such as increasing heart rate etc
0
2015-02-01T19:48:48+05:30
Norepinephrine increases heart rate......

Hope this helps u!!!!
0