Which of the uterus layer exhibits strong contraction during delivery of the baby?

Myometrium

The correct answer is Option (1) - Myometrium

During the delivery of a baby, the layer of the uterus that exhibits strong contractions to facilitate childbirth is the "Myometrium."

The myometrium is the middle and thickest layer of the uterine wall, consisting of smooth muscle tissue. It plays a crucial role during labor and delivery by contracting forcefully in a coordinated manner. These powerful contractions of the myometrium help push the fetus out through the birth canal (vagina) during childbirth (parturition).

The perimetrium is the outermost layer of the uterus and serves as the protective covering.

The endometrium is the innermost layer, which undergoes cyclic changes during the menstrual cycle, thickening to support a potential embryo implantation and shedding during menstruation if fertilization does not occur.

The ampulla is a part of the fallopian tube where fertilization typically takes place, and it is not directly involved in uterine contractions during childbirth.