Human Sexuality Exam 2.docx - Human Sexuality Exam 2 Chapters 6 7(pp 186-203 8 9 SDOH Chapter 6 Conception Pregnancy Conception occurs when sperm and

Human Sexuality Exam 2.docx - Human Sexuality Exam 2...

This preview shows page 1 - 3 out of 34 pages.

Human Sexuality Exam 2: Chapters 6, 7 (pp 186-203), 8, 9, SDOH. Chapter 6: Conception + Pregnancy Conception: occurs when sperm and egg meet and fertilization occurs. It occurs in the outer third of the fallopian tube. o Out of the original 200 million sperm, only about 2000 reach the tube containing the egg. As they approach, a chemical secreted by the egg attracts the sperm to the egg. o The egg is surrounded by a thin layer called the zona pellucida. Sperm swam around the egg and secrete an enzyme called hyaluronidase – produced by the acrosome (area of the sperm that secretes the enzyme hyaluronidase). o This enzyme dissolves the zona pellucida, permitting one sperm to penetrate the egg. Contraception has occurred. o The fertilized egg = zygote. The zygote continues to travel down the fallopian tube. About 36 hours after conception it begins the process of cell division – the original one cell becomes a mass of 2 cells, and increases. Between weeks 2-8 = embryo. From 8-birth = fetus. Improving the Chances of Conception: time intercourse so it occurs around the time of ovulation, sperm can live inside a woman’s body for 3-5 days, egg is capable of being fertilized for ~12-24 hours after ovulation. o Position during and after intercourse is important – missionary position. o Woman may remain lying down with pelvis tilted (30-60 minutes) post-coital. Infertility: involves an inability to conceive and give birth to a live child. o Infertility in men is the inability to impregnate a woman with viable sperm. o Diagnosed after 1 year of unprotected sex/attempts to become pregnant – diagnosis may be made earlier depending on maternal age or medical-related information. Infertility in Women – Causes: o Pelvic Inflammatory Disease (PID) caused by a sexually transmitted infection especially gonorrhea and chlamydia. o Non-ovulation, amenorrhea. o Blocked fallopian tubes – endometriosis. o Micro-epidermis causing an inhospitable cervical environment. Thick or acidic mucous Anti-sperm antibodies: Female Ab production within cervical mucous Male Ab production (head or tail) May account for 40% of unexplained infertility. o Advanced maternal age: Attempts of pregnancy delayed.
Image of page 1

Subscribe to view the full document.

Ova may be less viable. Hormonal influences. Infertility in Men – Causes: o Post-STI o Low sperm count – varicocele – varicose veins in the testicles. o Low-motility sperm: they are not good swimmers. Ingestion/use of toxic substances, high fever is linked to low motility. Combination Factors: o Anti-sperm antibodies – immunological response to the sperm. Immune system may also react to the fetus or placenta. o Egg may have faulty receptors to draw sperm. o Egg may have a thick shell that makes it impenetrable by sperm.
Image of page 2
Image of page 3
  • Spring '19
  • A. Barnfield

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Ask Expert Tutors You can ask 0 bonus questions You can ask 0 questions (0 expire soon) You can ask 0 questions (will expire )
Answers in as fast as 15 minutes