BIOH 370 1st Edition Lecture 33Outline of Last Lecture Reproductive System Day 2I. Mechanism and Effects of Testosterone ActivityII. Male Secondary Sex CharacteristicsIII. SemenIV. Testicular Cancer- Stage I- Stage II- Stage IIIV. The Four Components of the Male Duct SystemVI. The PenisVII. EpididymisVIII. Ductus Deferens and Ejaculatory DuctIX. Accessory Glands: Seminal Vesicles and Prostate GlandX. Male Sexual ResponseXI. Am I Normal?- Paper/studyXII. CircumcisionXIII. Peyronie’s DiseaseXIV. Female Reproductive SystemThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.- OvariesXV. OogenesisOutline of Current Lecture Reproductive System Day 3I. OogenesisII. Maturation of an Ovum (Ovarian Cycle)III. The Female Reproductive CycleIV. Female Duct Systema. Uterine Tubesb. Uterus and Supporting Structureso Uterine Vascular SupplyCurrent LectureReproductive System Day 3I. Oogenesis- begins before birtho Polar bodies: mostly composed of cytoplasm and some genetic info.- wants to keep as much cytoplasm as possible- balances amount of chromosomeso Right and left ovaries change/switch which one will release an each- each month is different (nonspecific pattern- changes depending on specific femal)II. Maturation of an Ovum (Ovarian Cycle)LH=releases oocyteFSH= increases follicle sizeIII. The Female Reproductive CycleRegulation comes from surges of hormones –not small releases of the hormonesIV. Female Duct System• Uterine (fallopian) tubes or oviducts• Uterus • Vaginaa. Uterine Tubes:o Ampulla - Distal expansion with infundibulum near ovary- Usual site of fertilizationo Ciliated fibriae of infundibulum create currents to move oocyte into uterine tubeo Isthmus: constricted region where tube joins uteruso Oocyte is carried along by peristalsis and ciliary actiono Nonciliated cells nourish the oocyte and the sperm o Mesosalpinx: mesentery that supports the uterine tubesb. Uterus and Supporting Structureso Support for the female reproductive system:- Mesometrium—lateral support: portion of the broad ligament- Lateral cervical (cardinal) ligaments: from the cervix and superior part of the vagina to the walls of the pelvis- Uterosacral ligaments secure uterus to the sacrum- Round ligaments bind to the anterior wall o Uterus- Cervix: narrow neck, or outlet; projects into the vagina - Cervical canal communicates with the- Vagina via the external os- Uterine body via the internal oso Cervical glands secrete mucus that blocks sperm entry except during midcycleo Three layers of uterine walla. Perimetrium: serous layer (visceral peritoneum)b. Myometrium: interlacing layers of smooth muscle c. Endometrium: mucosal lining o Uterine Vascular Supply- Uterine arteries: arise from internal iliacs- Arcuate arteries: in the myometrium - Radial branches in the endometrium branch intoa. Spiral arteries ® stratum functionalisb. Straight arteries ® stratum basalis- Spasms of spiral arteries leads to shedding of stratum functionalis-what’s shed during
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