Consider the following statements regarding function of adrenal medullary hormones :

(A) It causes pupilary constriction.
(B) It is a hyperglycemic hormone.
(C) It causes piloerection.
(D) It increases strength of heart contraction.

Choose the correct answer from the options given below :

The adrenal medulla releases the catecholamines epinephrine (adrenaline) and norepinephrine, which are key mediators of the sympathetic nervous system.

Statement (A) claims that adrenal medullary hormones cause pupilary constriction. In reality, these hormones activate β‑adrenergic receptors in the dilator pupillae muscle, producing pupilary dilation (mydriasis). Therefore, (A) is incorrect.

Statement (B) says the hormones are hyperglycemic. Epinephrine stimulates glycogenolysis in the liver and skeletal muscle and promotes glucagon release, both of which raise blood glucose levels. Hence, (B) is correct.

Statement (C) asserts that the hormones cause piloerection. Sympathetic stimulation of the arrector pili muscles leads to goose‑bumps, a classic effect of catecholamine surge. Thus, (C) is correct.

Statement (D) states that the hormones increase the strength of heart contraction. Activation of β₁‑adrenergic receptors in the myocardium produces a positive inotropic effect, enhancing contractile force. Consequently, (D) is correct.

Combining the evaluated statements, the correct set is B, C and D only.