How many of the following are the functions of cortisol?

(a) Maintenance of the cardio-vascular system

(b) Maintenance of the kidney functions

(c) Suppression of the immune response

(d) Stimulation of RBC production

(e) Synthesis of glucose from non carbohydrate sources

Glucocorticoids stimulate gluconeogenesis (synthesis of glucose from non carbohydrate sources), lipolysis and proteolysis; and inhibit cellular uptake and utilisation of amino acids. 

Cortisol is also involved in maintaining the cardio-vascular system as well as the kidney functions. 

Glucocorticoids, particularly cortisol, produces anti inflammatory reactions and suppresses the immune response. Cortisol stimulates the RBC production.