Ajay had participated in a running race. He was excited and stood first in the race.

When he finished the race, his heart was beating fast, and he was breathing heavily with a lot of sweat.

What could be the reason for these changes in him after the race?

Asked by Topperlearning User | 15th Jul, 2014, 03:30: PM

Expert Answer:

When Ajay started running, his body experienced a lot of stress.

In response to the stress, the adrenal medulla secreted two hormones epinephrine and norepinephrine.

Secretion of these hormones resulted in sweating, increased heart beat, increased respiration, piloerection etc.

Answered by  | 15th Jul, 2014, 05:30: PM