The main function of nor - adrenaline is

Options

A. Contraction of arteries
B. To stop contraction of arteries
C. Relaxation
D. None of the above

Answer

A

Explanation

The adrenal medulla secrete two hormones called adrenaline or epinephrine and nor – adrenaline or norepinephrine. These are rapidly secreted in response to stress and thus increase heart rate and respiratory rate by contraction of blood vessels