Bio 150 Week 3 notes
Bio 150 Week 3 notes Bio 150
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This 3 page Class Notes was uploaded by Morgan Bell on Monday October 10, 2016. The Class Notes belongs to Bio 150 at Converse College taught by Dr. Steele in Fall 2016. Since its upload, it has received 3 views. For similar materials see Biology of Sexuality in Biology at Converse College.
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Date Created: 10/10/16
Bio 150Week 3 9/129/16 Female Sexual Anatomy Female External Genetalia Clitoris Erectile organ No direct reproductive function Homologous to penis Same embryonic origin Consists of Glans, prepuce, shaft 2 corpora cavernosa Clitoridectomy (FGM) Surgical removal of all or part of the clitoris Infibulation? Genital mutilation (clidoridectomy) Mons Pubis Mons veneris “Mountain of Venus” Fatty Pubic hair On top of pubic symphysis Labia Majora (outer lips) Fatty Pubic hair Nerve endings Minora (inner lips) Hairless Forms clitoral hood Nerve endings Labiaplasty Surgical alteration in size and/or labia appearance Other Vaginal opening Introitus Urethral opening Passage of urine Compare to male Perineum Sensitive skin b/w vagina and anus Hymen Thin membrane partially covering vaginal opening Biological importance Cultural importance Internal Anatomy Ovaries Female gonads Primary reproductive organs Produce eggs ~ 2M at birth ~ 400,000 at puberty Also endocrine organs Produce hormones Estrogen, progesterone Fallopian tubes Oviducts, uterine tubes Nourish and carry eggs into uterus Ciliated Fimbriae Fingerlike projections of fallopian tube Infundibulum fertilization Uterus Womb Pearshaped Where fertilized egg is implanted and fetus develops Secretes various substances proteins, sugars, and fats to maintain fetus prostaglandins to contract and widen cervix Betaendorphins and anandamide to aid in pain relief Parts: Cervix dilates during childbirth Os = opening that leads to vagina Body Fundus Wall: Endometrium “inner” Sheds during period Myometrium “middle” muscular part contracts Perimetrium “outer” Edometriosis When endometrial tissue of uterus wanders out of the uterus to different locations. Still responds to progesterone by proliferating, and then shedding when progesterone declines each menstrual cycle. VERY painful Vagina 34 inches Birth canal Extremely elastic and expandable Lactobacteria: beneficial bacteria that help prevent growth of harmful microorganism antibiotics can kill this bacteria and can cause yeast infections yogurt with live cultures can restore this bacteria Sensitive lower third Gspot: a reportedly highly sensitive area on the anterior wall of the vagina Introitus (opening) Anatomy of the breast Not a sex organ but important in sexual attraction and arousal Nipple – rich in nerve endings Areola pigmented Muscles for erection Montgomery’s glands to lubricate nipple 1520 clusters of Mammary glands Milk duct The amount of milk produced is not based on breast size, but basedo n your body’s response to hormones. Fat Changes over course of lifetime, during pregnancy, and during monthly cycle Determined by how responsive a woman is to estrogen, which allows fat deposition Inhibited by androgens (male homrones) Breast Surgery Breast augmentation surgery (bigger) In 2009, about 312,000 U.S. women Done for cosmetic reasons, after mastectomy, or in sex reassignment surgery More than 50% experience problems Breast reduction surgery (smaller) Done due to discomfort or cosmetic reasons Results in scarring, loss of sensation, and inability to breastfeed
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