endocrine project
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Endocrine Project. By: Katie Glaeser Melanie Olmedo 8 th January 13, 2014. Female Gonads (ovaries). The female gonads (ovaries) are located in the pelvis, one on each side of the uterus. Hormones . Major: Estrogen - PowerPoint PPT PresentationTRANSCRIPT
ENDOCRINE PROJECTBy: Katie GlaeserMelanie Olmedo8th
January 13, 2014
Female Gonads (ovaries)
The female gonads (ovaries) are located in the pelvis, one on each side of the uterus.
HORMONES •MAJOR:• ESTROGEN• PROMOTES THE
DEVELOPMENT AND MAINTENANCE OF FEMALE SEXUAL CHARACTERISTICS
• PROGESTERONE• PREPARE AND
MAINTAIN THE BODY FOR PREGNANCY
Hormones Continued
Minor: LH (luteinizing hormone)
triggers ovulation and development of the corpus luteum.
FSH(follicle stimulating hormone) released by the anterior pituitary gland
HCG (human chorionic gonadotrophin) produced during pregnancy
GnRH (gonadotropin-releasing hormone)
released during a menstrual cycle or giving birth
Relaxinproduced during pregnancy
TypesSteroid hormones: Estrogen
and Progestero
ne
Sex hormones: estrogen
Hormones Affect on the Body
The two hormones affect the body by controlling the development of female body characteristics such as:
Breasts Body Shape Body Hair They also regulate the menstrual
cycle and pregnancy. Increases growth of bones during
adolescence that lead to adult height and proportions.
Homeostasis
Progesterone is most active in females during ovulation and pregnancy where it maintains appropriate conditions in the human body to support a developing fetus.
Homeostasis Continued• Estrogens- A loss contributes to • Negative effects on the brain and
homeostasis • Estrogen helps improve blood flow to the
brain and prevents Alzheimer disease • Blocks the production of chemicals contributing
to it. • Increases the level of serotonin
• a chemical in the brain known to improve mood.
• A loss of estrogen can not only affect womens physical health but mental health as well
POSITIVE FEEDBACK:
• OCCURS BEFORE OVULATION
• ESTROGEN CAUSES THE RELEASE OF GNRH(GONADOTROPIN-RELEASING HORMONE) FROM THE HYPOTHALAMUS• LH(LUTEINIZING
HORMONE) FROM THE ANTERIOR PITUITARY
• LH CAUSES THE RELEASE OF ESTROGEN
Causes Menstrual Cycles
Negative Feedback:
• Occurs after Ovulation• Corpus luteum
secretes progesterone because of the LH hormone• Progesterone inhibits
GnRH from the hypothalamus and LH from the anterior pituitary
Stops Menstrual Cycles
Animation
• http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter28/animation__positive_and_negative_feedback__quiz_2_.html
OVARY FAILURE
Hypogonadism
• Causes: genetic disorders, infection, liver and kidney disease, radiation
• Effects: no hormones are produced, no menstrual cycles
• Treatments: Hormone based medicines usually come in pills or skin patches.
Ovary Failure Continued•Causes: aging •Effects: hot flashes, night sweats, discomfort, urine infections, and incontinence•Treatments: HRT (hormone replacement therapy), this treatment wont stop menopause from happening but it will make it less unbearable
Menopause
DISEASES
Ovarian Cancer
• Tumors arise most commonly from the epithelium of the ovary
Ovarian Cyst
• Sac filled with fluid or semifluid materials
Diseases Continued
Polycystic Ovary Syndrome
•irregular periods, acne, obesity, and excessive hair growth. •Stein-Leventhal syndrome. •number of small cysts.
Premature Ovarian Failure
•women stop having periods at a very early age
Ovarian Torsion
•Partial or complete rotation of the ovary with its fallopian tube on its ligaments , inhibits the blood supply to the ovary
Sources
• http://www.medterms.com/script/main/art.asp?articlekey=8978• http://faculty.stcc.edu/AandP/AP/AP2pages/reprod/female1.htm• http://www.healthywomen.org/condition/progesterone• http://www.menopauseatoz.com/00058.shtml• http://www.ovarydisease.com/>• http://www.medicinenet.com/ovarian_cancer/article.htm> • http://www.medicinenet.com/polycystic_ovary/article.htm> • http://www.nlm.nih.gov/medlineplus/ency/article/001195.htm