HESI A2: ANATOMY AND PHYSIOLOGY Q&A 100% CORRECT

HESI A2: ANATOMY AND PHYSIOLOGY Q&A 100% CORRECT *Sagittal Section* - A cut along the MEDIAN PLANE Zygote - the fertilized egg; it enters a 2-week period of rapid cell division and develops into an embryo menstrual cycle - regular sequence of events in which an egg develops and is released from the body menstrual phase - the days of the menstrual cycle on which menstrual bleeding occurs. 1-5 days. follicular phase - The first phase of the ovarian cycle, during which a follicle (an oocyte and its surroudning cells) enlarges and matures. This phase is under the control of FSH from the anterior pituitary, and typically lasts from day 1 to day 14 of the menstrual cycle. The follicle secretes estrogen during this time period. ovulation phase - menstrual cycle, phase 2 stimulated by surge in LH b/c estrogen stops having negative feedback effects at certain threshold -- begins having positive feedback effects luteal phase - The third phase of the ovarian cycle, during which a corpus luteum is formed from the remnants of the follicle that has ovulated its oocyte. The corpus luteum secretes progestrone and estrogen during this time period, which typically lasts from day 15 to day 28 of the menstrual cycle. Formation of the corpul luteum is triggered by