Question

parathyroid hormone stimulates osteoclastic activity. calcitonin stimulates osteoblastic activity. these hormones have a/an ______ effect.
multiple choice
permissive
synergistic
reciprocal
agonistic
antagonistic

Explanation:

Parathyroid hormone stimulates osteoclasts (which break down bone), while calcitonin stimulates osteoblasts (which build bone). Antagonistic effects occur when one hormone opposes the action of another. Permissive means one hormone allows another to act. Synergistic is when hormones work together. Reciprocal isn't a standard hormonal effect term. Agonistic refers to binding to a receptor like the natural ligand (not relevant here).

Answer:

antagonistic