1 / 5

Lesson #2: Menstruation and fertilization

Lesson #2: Menstruation and fertilization. Objectives: Draw, label and explain the menstrual cycle. Explain how and when human fertilization occurs. Menstruation:.

yahto
Download Presentation

Lesson #2: Menstruation and fertilization

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Lesson #2: Menstruation and fertilization Objectives: Draw, label and explain the menstrual cycle. Explain how and when human fertilization occurs

  2. Menstruation: Phase 1 (day 1-4) Lining breaks down: Body realizes that there is no baby and progesterone decreases, causing the uterine lining to disintegrate (menstruation) Phase 2 (day 5-13) Lining builds up: Estrogen causes the lining of uterus to build up. Phase 3 (day 14) Ovulation: Egg is released from the ovaries and begins to travel down the fallopian tubes. Phase 4 (day 15- 28) Lining is maintained: Progesterone keeps the uterus lining healthy and intact, waiting to see if the egg is fertilized.

  3. Fertilization Semen: 1) Provides a watery environment in which the sperm cells can swim while outside the body. 2) Provides nutrients for the sperm cells (fructose, amino acids and vitamin C) 3)Protects the sperm cells by neutralizing acids in the female's sexual tract

More Related