Final answer:
Hypertrophy is an increase in the size of a structure, such as a muscle, due to exercise. An example of physiologic hypertrophy is the enlargement of the uterus during puberty.
Step-by-step explanation:
Hypertrophy is an increase in the size of a structure, such as a muscle, due to exercise. A physiological example of hypertrophy can be observed in the uterus during puberty. Increased estrogen levels trigger the production of more uterine smooth muscle fibers, resulting in the enlargement of the myometrium.