Which of the following are the building blocks for proteins?

A. The atria contract (systole): Atrial contraction occurs with the P wave and the PR interval, before the QRS complex.
B. The ventricles contract (systole): The QRS complex corresponds to ventricular depolarization, which initiates ventricular contraction (systole) shortly afterward.
C. The semilunar (SL) valves close: SL valve closure happens at the end of ventricular systole (producing the second heart sound), not during the QRS.
D. The atrioventricular (AV) valves open: AV valves open during diastole to allow ventricular filling and are closed during the ventricular depolarization/contraction that the QRS represents.

A. Aldosterone: A mineralocorticoid that regulates sodium and potassium balance at the kidney and influences blood volume; it does not produce a strong anti-inflammatory effect.
B. Calcitonin: Hormone from thyroid C-cells that lowers blood calcium by inhibiting osteoclasts; it is not primarily anti-inflammatory.
C. Cortisol: A glucocorticoid from the adrenal cortex that suppresses immune and inflammatory responses (decreases cytokine production, inhibits leukocyte activity).
D. Follicle stimulating hormone (FSH): A pituitary gonadotropin that stimulates follicle growth in the ovary; it does not mediate anti-inflammatory actions.