postovulatory (premenstrual) phase is the time be-
tween ovulation and the onset of the menses and
normally lasts 14 days. During this phase the
ovum travels through the fallopian tubes to the
1. Anthony and Thibodeau: Textbook of
uterus. If the ovum becomes fertilized during this
Anatomy & Physiology, ed 11. C. V. Mosby.
passage, it will become implanted in and nurtured
by the newly developed endometrial lining.
However, if fertilization does not take place, the
2. American Academy of Orthopacdic Surgeons:
lining deteriorates and eventually sloughs off,
Emergency Care and Transportation of the
marking day 1 of the next cycle.
Sick and Injured, ed 3.