True or False? Stretching of the smooth muscle in the walls of the uterus causes more forceful contractions.

The statement is true. Stretching of the smooth muscle in the walls of the uterus does indeed lead to more forceful contractions through a physiological response known as the "stretch reflex." When the uterine smooth muscle is stretched, the muscle fibers respond by contracting more forcefully in order to expel the contents of the uterus, such as during labor.

This response is particularly pronounced during pregnancy as the uterus expands significantly, resulting in increased forceful contractions when the time comes for childbirth. Therefore, while one might think the contradiction stems from the potential for varying responses among individuals, this stretch-induced mechanism is a well-regarded physiological principle and does not vary significantly in terms of basic function.