01:119:116 Lecture Notes - Lecture 15: Corpus Luteum, Estrous Cycle, Zona Pellucida
22 Apr 2016
School
Department
Course
Professor
Document Summary
Houses and nourishes embryo and gives birth. Gametes (oocytes) in process of oogenesis. Oviduct extends from uterus to each ovary. Site of fertilisation if no fertilisation 2o oocyte degenerates in oviduct. Cilia move 2o oocyte (fertilised and unfertilised) down oviduct to uterus. Pear-shaped, about the size of a fist expands greatly during pregnancy. Myometrium thick wall composed of smooth muscle. Endometrium consists of connective tissue, glands, and blood vessels. Thickens very month in preparation for pregnancy. If fertilisation occurs embryo is implanted. If no fertilisation occurs endometrium sloughed off menstruation. Closes uterus and separates it from the vagina. Human papillomavirus (hpv) responsible for 90% of cases. Elastic muscular tube that extends to outside of body. Covers external opening of female sex organs. Immature eggs form in female embryo but do not complete development until years later. Oogenesis in embryo until before puberty. Primordial germ cells (2n) in female embryo differentiate mitosis. Oogonium (pl. oogonia) (2n) differentiate formed during embryonic development.
