Male and Female Reproductive System
Male and Female Reproductive System BIOL 2350
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This 2 page Class Notes was uploaded by Faiqa Rahman on Monday February 22, 2016. The Class Notes belongs to BIOL 2350 at University of Texas at Dallas taught by Dr. Ilya Sapozhnikov in Spring 2016. Since its upload, it has received 21 views. For similar materials see Biological Basis for Health and Disease in Biology at University of Texas at Dallas.
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Date Created: 02/22/16
BBHD 02/15/2016 Male Reproductive System Gonads: testes Testis: produces sperm; testosterone and inhibin Scrotum: keeps the testes at the proper temperature Epididymis: site of sperm maturation and storage Ductus deferens: duct for sperm maturation storage and transport Ejaculatory duct: duct for transporting sperm and glandular secretions Accessory glands: Seminal vesicle: secretes fructose and most of the seminal fluid Prostate gland: secretes watery alkaline fluid to raise vaginal pH Bulbourethral gland: secretes lubricating mucus Offspring has equal representation of both mother and father genes. After meiosis 1 the secondary spermatocytes are produced After meiosis 2 early spermatids-‐>late spermatids-‐> spermatozoa The whip-‐like movements of the tail propel the sperm Midpiece contains mitochondria that will provide metabolic energy to fuel he trip to the egg The head contains the father’s chromosomes, his genetic contribution to the next generation The acrosome a sac that covers the head of the sperm contains enzymes that will assist in fertilization Sperm moves 2-‐3 mm per minute. Gonadotropic regulating or releasing hormone: GnRH Go to anterior pituitary gland releases FSH or LH LH to interstitial cells which releases testosterone to target tissues FSH to target tissues to sustentacular cell Female Reproductive System: The female inner genitalia is not set in stone like the males, they are flexible. Vesicouterine: pouch between uterus and bladder Rectouterine: space between uterus and rectum PID: pelvic inflammatory disease lumen of the oviduct more narrow. Unknown causes Ectopic: out of place; tubule pregnancy Gonads: ovaries Mitotic divisions begins and ends in uterus Oocyte contained in follicle By the time of puberty girl has 400,000 potential eggs Exam #2 has been moved to February 29 th Oogenesis: stem cell+mitosis=primary oocyte. • Primary oocyte+growth= primary oocyte arrested in prophase I present at birth. • Each month from puberty to menopause: (Menses)primary oocyte + meiosis I= first polar body and secondary oocyte • First polar body+ meiosis II= more polar bodies that degenerate • Each month from puberty to menopause: (fertilization) primary oocyte + meiosis I= secondary oocyte and first polar body • Secondary oocyte+ ovulation= meiosis II completed only if sperm penetrates= second polar body and ovum. Progesterone: for pregnancy. Hormone that helps pregnancy produced by the corpus luteum Corpus Luteum: yellow body If follicles disappear: woman can’t produce gametes and or oocyte therefore process slowly dies down Cilia in uterus moves sperm to fertilize the oocyte Perimetrium: around the uterus Middle layer: myometrium the thickest layer in the uterus because it’s pushing baby out during labor. Inner layer: endometrium Comparison of fertile and non-‐fertile Ovulatory “fertile” Mucus Non-‐ovulatory mucus clear opaque slightly cloudy scant abundant non stretchy slippery rubbery stretchy like raw egg whites leaves white flakes when dry dries without residue