In order to make the heart more responsive to epinephrine, thyroid hormone must also act on the heart muscles. this hormonal coordination is referred to as permissive effect.
In stressful situation, the body responds by calling for the release of hormones that provide a burst of energy. The hormones epinephrine and norepinephrine are then released by the adrenal medulla.
Permissive function of hormones means one hormone strive its full effect only in the presence of other hormone. Example may include Thyroid hormone increases the number of beta androgenic receptors. These receptors are required for epinephrine. So without thyroid hormone the effect of epinephrine on target cell would not be effective.
To learn more about Thyroid hormone , here
brainly.com/question/13856314
#SPJ4
