Influence of follicle stimulating hormonesfsh

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
influence of follicle-stimulating hormones(FSH); luteinizing hormone(LH) transforms follicle into corpus luteum, which maintains pregnancy by producing progesterone; ovaries produce estrogen and progesterone in both pregnant and nonpregnant states. Menstruation occurs when the ovum is not fertilized and the corpus luteum disintegrates; endometrium becomes ischemic as progesterone and estrogen levels drop in last week of menstrual cycle, leading to sloughing of myometrium. Conception occurs in the fallopian tubes when a 23-chromosome containing spermatozoon enters a 23-chromosome containing ovum and produces a 23-chromosome pair containing diploid zygote.
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Pregnancy: cleavage(rapid mitotic division of zygote) creates a blastocyst, which in turn becomes a multicellular solid ball of 16 cells(morula); further division leads to trophoblast stage, when it implants within the endometrium. Secretion production: cervical secretions become elastic and stretchy during ovulation to facilitate sperm transport toward ovum; endometrial secretions are rich in glycogen to nourish developing embryo until placental circulation is in place. Age related changes of female reproductive system Menses- begin during puberty, stimulated by estrogen and progesterone Menopause-characterized by one year of amennorhea and occurs on average at age 50. Climacteric occurs prior to menopause hot flashes, headaches, insomnia, etc. Male internal structures Testes- where spermatogenesis take place via meiosis Epididymis-tubelike duct where motility and fertility develop Vas deferens- connects epididymis to prostate gland Prostate glands-produces alkaline fluid that is released during ejaculation Seminal vesicles-produces seminal fluid Urethra Semen Age related changes of male reproductive system Puberty- hair grows, voice changes, etc. Spermatozoa- count, motility, and morphology begin to decrease in middle age External organs atrophy in older adults
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

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